diff --git a/setup.cfg b/setup.cfg
index f3e013e1..36bcbfff 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,4 +2,4 @@
 test = pytest
 
 [tool:pytest]
-addopts = --cov=ahriman --pspec
+addopts = --cov=ahriman --cov-report term-missing:skip-covered --pspec
diff --git a/src/ahriman/application/ahriman.py b/src/ahriman/application/ahriman.py
index 0ce4b26f..ceca9885 100644
--- a/src/ahriman/application/ahriman.py
+++ b/src/ahriman/application/ahriman.py
@@ -274,11 +274,18 @@ def _set_web_parser(root: SubParserAction) -> argparse.ArgumentParser:
     return parser
 
 
-if __name__ == "__main__":
-    args_parser = _parser()
-    args = args_parser.parse_args()
+def run():
+    """
+    run application instance
+    """
+    if __name__ == "__main__":
+        args_parser = _parser()
+        args = args_parser.parse_args()
 
-    handler: handlers.Handler = args.handler
-    status = handler.execute(args)
+        handler: handlers.Handler = args.handler
+        status = handler.execute(args)
 
-    sys.exit(status)
+        sys.exit(status)
+
+
+run()
diff --git a/src/ahriman/application/application.py b/src/ahriman/application/application.py
index d28edb9a..31293c72 100644
--- a/src/ahriman/application/application.py
+++ b/src/ahriman/application/application.py
@@ -51,6 +51,13 @@ class Application:
         self.architecture = architecture
         self.repository = Repository(architecture, configuration)
 
+    def _finalize(self) -> None:
+        """
+        generate report and sync to remote server
+        """
+        self.report([])
+        self.sync([])
+
     def _known_packages(self) -> Set[str]:
         """
         load packages from repository and pacman repositories
@@ -63,13 +70,6 @@ class Application:
         known_packages.update(self.repository.pacman.all_packages())
         return known_packages
 
-    def _finalize(self) -> None:
-        """
-        generate report and sync to remote server
-        """
-        self.report([])
-        self.sync([])
-
     def get_updates(self, filter_packages: List[str], no_aur: bool, no_manual: bool, no_vcs: bool,
                     log_fn: Callable[[str], None]) -> List[Package]:
         """
@@ -182,6 +182,7 @@ class Application:
                 continue
             for archive in package.packages.values():
                 if archive.filepath is None:
+                    self.logger.warning(f"filepath is empty for {package.base}")
                     continue  # avoid mypy warning
                 src = self.repository.paths.repository / archive.filepath
                 dst = self.repository.paths.packages / archive.filepath
diff --git a/src/ahriman/application/handlers/update.py b/src/ahriman/application/handlers/update.py
index a6c58f4f..08febe66 100644
--- a/src/ahriman/application/handlers/update.py
+++ b/src/ahriman/application/handlers/update.py
@@ -19,7 +19,7 @@
 #
 import argparse
 
-from typing import Type
+from typing import Callable, Type
 
 from ahriman.application.application import Application
 from ahriman.application.handlers.handler import Handler
@@ -39,13 +39,22 @@ class Update(Handler):
         :param architecture: repository architecture
         :param configuration: configuration instance
         """
-        # typing workaround
-        def log_fn(line: str) -> None:
-            return print(line) if args.dry_run else application.logger.info(line)
-
         application = Application(architecture, configuration)
-        packages = application.get_updates(args.package, args.no_aur, args.no_manual, args.no_vcs, log_fn)
+        packages = application.get_updates(args.package, args.no_aur, args.no_manual, args.no_vcs,
+                                           Update.log_fn(application, args.dry_run))
         if args.dry_run:
             return
 
         application.update(packages)
+
+    @staticmethod
+    def log_fn(application: Application, dry_run: bool) -> Callable[[str], None]:
+        """
+        package updates log function
+        :param application: application instance
+        :param dry_run: do not perform update itself
+        :return: in case if dry_run is set it will return print, logger otherwise
+        """
+        def inner(line: str) -> None:
+            return print(line) if dry_run else application.logger.info(line)
+        return inner
diff --git a/src/ahriman/core/status/web_client.py b/src/ahriman/core/status/web_client.py
index 2a3c2ea3..81413742 100644
--- a/src/ahriman/core/status/web_client.py
+++ b/src/ahriman/core/status/web_client.py
@@ -45,6 +45,15 @@ class WebClient(Client):
         self.host = host
         self.port = port
 
+    @staticmethod
+    def _exception_response_text(exception: requests.exceptions.HTTPError) -> str:
+        """
+        safe response exception text generation
+        :param exception: exception raised
+        :return: text of the response if it is not None and empty string otherwise
+        """
+        return exception.response.text if exception.response is not None else ''
+
     def _ahriman_url(self) -> str:
         """
         url generator
@@ -75,7 +84,7 @@ class WebClient(Client):
             response = requests.post(self._package_url(package.base), json=payload)
             response.raise_for_status()
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not add {package.base}: {e.response.text}")
+            self.logger.exception(f"could not add {package.base}: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception(f"could not add {package.base}")
 
@@ -95,7 +104,7 @@ class WebClient(Client):
                 for package in status_json
             ]
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not get {base}: {e.response.text}")
+            self.logger.exception(f"could not get {base}: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception(f"could not get {base}")
         return []
@@ -112,7 +121,7 @@ class WebClient(Client):
             status_json = response.json()
             return BuildStatus.from_json(status_json)
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not get service status: {e.response.text}")
+            self.logger.exception(f"could not get service status: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception("could not get service status")
         return BuildStatus()
@@ -126,7 +135,7 @@ class WebClient(Client):
             response = requests.delete(self._package_url(base))
             response.raise_for_status()
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not delete {base}: {e.response.text}")
+            self.logger.exception(f"could not delete {base}: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception(f"could not delete {base}")
 
@@ -142,7 +151,7 @@ class WebClient(Client):
             response = requests.post(self._package_url(base), json=payload)
             response.raise_for_status()
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not update {base}: {e.response.text}")
+            self.logger.exception(f"could not update {base}: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception(f"could not update {base}")
 
@@ -157,6 +166,6 @@ class WebClient(Client):
             response = requests.post(self._ahriman_url(), json=payload)
             response.raise_for_status()
         except requests.exceptions.HTTPError as e:
-            self.logger.exception(f"could not update service status: {e.response.text}")
+            self.logger.exception(f"could not update service status: {WebClient._exception_response_text(e)}")
         except Exception:
             self.logger.exception("could not update service status")
diff --git a/src/ahriman/core/util.py b/src/ahriman/core/util.py
index 6045b280..93b19ed2 100644
--- a/src/ahriman/core/util.py
+++ b/src/ahriman/core/util.py
@@ -89,6 +89,6 @@ def pretty_size(size: Optional[float], level: int = 0) -> str:
 
     if size is None:
         return ""
-    if size < 1024 or level == 3:
+    if size < 1024 or level >= 3:
         return f"{size:.1f} {str_level()}"
     return pretty_size(size / 1024, level + 1)
diff --git a/src/ahriman/models/package.py b/src/ahriman/models/package.py
index cce86329..f9ac734a 100644
--- a/src/ahriman/models/package.py
+++ b/src/ahriman/models/package.py
@@ -154,7 +154,7 @@ class Package:
         :return: package properties
         """
         packages = {
-            key: PackageDescription(**value)
+            key: PackageDescription.from_json(value)
             for key, value in dump.get("packages", {}).items()
         }
         return Package(
diff --git a/src/ahriman/models/package_description.py b/src/ahriman/models/package_description.py
index 0944a112..91d9ebe9 100644
--- a/src/ahriman/models/package_description.py
+++ b/src/ahriman/models/package_description.py
@@ -19,10 +19,10 @@
 #
 from __future__ import annotations
 
-from dataclasses import dataclass, field
+from dataclasses import dataclass, field, fields
 from pathlib import Path
 from pyalpm import Package  # type: ignore
-from typing import List, Optional, Type
+from typing import Any, Dict, List, Optional, Type
 
 
 @dataclass
@@ -59,6 +59,18 @@ class PackageDescription:
         """
         return Path(self.filename) if self.filename is not None else None
 
+    @classmethod
+    def from_json(cls: Type[PackageDescription], dump: Dict[str, Any]) -> PackageDescription:
+        """
+        construct package properties from json dump
+        :param dump: json dump body
+        :return: package properties
+        """
+        # filter to only known fields
+        known_fields = [pair.name for pair in fields(cls)]
+        dump = {key: value for key, value in dump.items() if key in known_fields}
+        return cls(**dump)
+
     @classmethod
     def from_package(cls: Type[PackageDescription], package: Package, path: Path) -> PackageDescription:
         """
diff --git a/src/ahriman/models/report_settings.py b/src/ahriman/models/report_settings.py
index d850e268..cfa3e739 100644
--- a/src/ahriman/models/report_settings.py
+++ b/src/ahriman/models/report_settings.py
@@ -31,6 +31,7 @@ class ReportSettings(Enum):
     :cvar HTML: html report generation
     """
 
+    Disabled = auto()  # for testing purpose
     HTML = auto()
 
     @classmethod
diff --git a/src/ahriman/models/upload_settings.py b/src/ahriman/models/upload_settings.py
index 1fec402c..c1aeaf6f 100644
--- a/src/ahriman/models/upload_settings.py
+++ b/src/ahriman/models/upload_settings.py
@@ -32,6 +32,7 @@ class UploadSettings(Enum):
     :cvar S3: sync to Amazon S3
     """
 
+    Disabled = auto()  # for testing purpose
     Rsync = auto()
     S3 = auto()
 
diff --git a/tests/ahriman/application/handlers/test_handler.py b/tests/ahriman/application/handlers/test_handler.py
index 0569490c..89d71a18 100644
--- a/tests/ahriman/application/handlers/test_handler.py
+++ b/tests/ahriman/application/handlers/test_handler.py
@@ -1,8 +1,10 @@
 import argparse
+import pytest
 
 from pytest_mock import MockerFixture
 
 from ahriman.application.handlers import Handler
+from ahriman.core.configuration import Configuration
 
 
 def test_call(args: argparse.Namespace, mocker: MockerFixture) -> None:
@@ -27,3 +29,22 @@ def test_call_exception(args: argparse.Namespace, mocker: MockerFixture) -> None
     """
     mocker.patch("ahriman.application.lock.Lock.__enter__", side_effect=Exception())
     assert not Handler._call(args, "x86_64")
+
+
+def test_execute(args: argparse.Namespace, mocker: MockerFixture) -> None:
+    """
+    must run execution in multiple processes
+    """
+    args.architecture = ["i686", "x86_64"]
+    starmap_mock = mocker.patch("multiprocessing.pool.Pool.starmap")
+
+    Handler.execute(args)
+    starmap_mock.assert_called_once()
+
+
+def test_packages(args: argparse.Namespace, configuration: Configuration) -> None:
+    """
+    must raise NotImplemented for missing method
+    """
+    with pytest.raises(NotImplementedError):
+        Handler.run(args, "x86_64", configuration)
diff --git a/tests/ahriman/application/handlers/test_handler_status.py b/tests/ahriman/application/handlers/test_handler_status.py
index a1cac924..1fc32783 100644
--- a/tests/ahriman/application/handlers/test_handler_status.py
+++ b/tests/ahriman/application/handlers/test_handler_status.py
@@ -4,6 +4,8 @@ from pytest_mock import MockerFixture
 
 from ahriman.application.handlers import Status
 from ahriman.core.configuration import Configuration
+from ahriman.models.build_status import BuildStatus
+from ahriman.models.package import Package
 
 
 def _default_args(args: argparse.Namespace) -> argparse.Namespace:
@@ -12,15 +14,33 @@ def _default_args(args: argparse.Namespace) -> argparse.Namespace:
     return args
 
 
-def test_run(args: argparse.Namespace, configuration: Configuration, mocker: MockerFixture) -> None:
+def test_run(args: argparse.Namespace, configuration: Configuration, package_ahriman: Package,
+             mocker: MockerFixture) -> None:
     """
     must run command
     """
     args = _default_args(args)
     mocker.patch("pathlib.Path.mkdir")
     application_mock = mocker.patch("ahriman.core.status.client.Client.get_self")
-    packages_mock = mocker.patch("ahriman.core.status.client.Client.get")
+    packages_mock = mocker.patch("ahriman.core.status.client.Client.get",
+                                 return_value=[(package_ahriman, BuildStatus())])
 
     Status.run(args, "x86_64", configuration)
     application_mock.assert_called_once()
     packages_mock.assert_called_once()
+
+
+def test_run_with_package_filter(args: argparse.Namespace, configuration: Configuration, package_ahriman: Package,
+                                 mocker: MockerFixture) -> None:
+    """
+    must run command
+    """
+    args = _default_args(args)
+    args.package = [package_ahriman.base]
+    mocker.patch("pathlib.Path.mkdir")
+    packages_mock = mocker.patch("ahriman.core.status.client.Client.get",
+                                 return_value=[(package_ahriman, BuildStatus())])
+
+    Status.run(args, "x86_64", configuration)
+    packages_mock.assert_called_once()
+
diff --git a/tests/ahriman/application/handlers/test_handler_update.py b/tests/ahriman/application/handlers/test_handler_update.py
index a4bbafd2..fd3a9094 100644
--- a/tests/ahriman/application/handlers/test_handler_update.py
+++ b/tests/ahriman/application/handlers/test_handler_update.py
@@ -2,6 +2,7 @@ import argparse
 
 from pytest_mock import MockerFixture
 
+from ahriman.application.application import Application
 from ahriman.application.handlers import Update
 from ahriman.core.configuration import Configuration
 
@@ -40,3 +41,12 @@ def test_run_dry_run(args: argparse.Namespace, configuration: Configuration, moc
 
     Update.run(args, "x86_64", configuration)
     updates_mock.assert_called_once()
+
+
+def test_log_fn(application: Application, mocker: MockerFixture) -> None:
+    """
+    must print package updates
+    """
+    logger_mock = mocker.patch("logging.Logger.info")
+    Update.log_fn(application, False)("hello")
+    logger_mock.assert_called_once()
diff --git a/tests/ahriman/application/test_ahriman.py b/tests/ahriman/application/test_ahriman.py
index 9475c289..435a7ff9 100644
--- a/tests/ahriman/application/test_ahriman.py
+++ b/tests/ahriman/application/test_ahriman.py
@@ -1,5 +1,9 @@
 import argparse
 
+from pytest_mock import MockerFixture
+
+from ahriman.application.handlers import Handler
+
 
 def test_parser(parser: argparse.ArgumentParser) -> None:
     """
@@ -81,3 +85,19 @@ def test_subparsers_web(parser: argparse.ArgumentParser) -> None:
     args = parser.parse_args(["-a", "x86_64", "web"])
     assert args.lock is None
     assert args.no_report
+
+
+def test_run(args: argparse.Namespace, mocker: MockerFixture) -> None:
+    """
+    application must be run
+    """
+    args.architecture = "x86_64"
+    args.handler = Handler
+
+    from ahriman.application import ahriman
+    mocker.patch.object(ahriman, "__name__", "__main__")
+    mocker.patch("argparse.ArgumentParser.parse_args", return_value=args)
+    exit_mock = mocker.patch("sys.exit")
+
+    ahriman.run()
+    exit_mock.assert_called_once()
diff --git a/tests/ahriman/application/test_application.py b/tests/ahriman/application/test_application.py
index 69e3772b..ecd5728d 100644
--- a/tests/ahriman/application/test_application.py
+++ b/tests/ahriman/application/test_application.py
@@ -20,11 +20,22 @@ def test_finalize(application: Application, mocker: MockerFixture) -> None:
     sync_mock.assert_called_once()
 
 
-def test_get_updates_all(application: Application, mocker: MockerFixture) -> None:
+def test_known_packages(application: Application, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must return not empty list of known packages
+    """
+    mocker.patch("ahriman.core.repository.repository.Repository.packages", return_value=[package_ahriman])
+    packages = application._known_packages()
+    assert len(packages) > 1
+    assert package_ahriman.base in packages
+
+
+def test_get_updates_all(application: Application, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must get updates for all
     """
-    updates_aur_mock = mocker.patch("ahriman.core.repository.update_handler.UpdateHandler.updates_aur")
+    updates_aur_mock = mocker.patch("ahriman.core.repository.update_handler.UpdateHandler.updates_aur",
+                                    return_value=[package_ahriman])
     updates_manual_mock = mocker.patch("ahriman.core.repository.update_handler.UpdateHandler.updates_manual")
 
     application.get_updates([], no_aur=False, no_manual=False, no_vcs=False, log_fn=print)
@@ -233,6 +244,17 @@ def test_sign(application: Application, package_ahriman: Package, package_python
     finalize_mock.assert_called_once()
 
 
+def test_sign_skip(application: Application, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must skip sign packages with empty filename
+    """
+    package_ahriman.packages[package_ahriman.base].filename = None
+    mocker.patch("ahriman.core.repository.repository.Repository.packages", return_value=[package_ahriman])
+    mocker.patch("ahriman.application.application.Application.update")
+
+    application.sign([])
+
+
 def test_sign_specific(application: Application, package_ahriman: Package, package_python_schedule: Package,
                        mocker: MockerFixture) -> None:
     """
diff --git a/tests/ahriman/core/build_tools/test_task.py b/tests/ahriman/core/build_tools/test_task.py
index f21bf970..8dffd758 100644
--- a/tests/ahriman/core/build_tools/test_task.py
+++ b/tests/ahriman/core/build_tools/test_task.py
@@ -51,6 +51,15 @@ def test_fetch_new(mocker: MockerFixture) -> None:
     ])
 
 
+def test_build(task_ahriman: Task, mocker: MockerFixture) -> None:
+    """
+    must build package
+    """
+    check_output_mock = mocker.patch("ahriman.core.build_tools.task.Task._check_output")
+    task_ahriman.build()
+    check_output_mock.assert_called()
+
+
 def test_init_with_cache(task_ahriman: Task, mocker: MockerFixture) -> None:
     """
     must copy tree instead of fetch
diff --git a/tests/ahriman/core/report/test_report.py b/tests/ahriman/core/report/test_report.py
index 2d1acbb8..8971d504 100644
--- a/tests/ahriman/core/report/test_report.py
+++ b/tests/ahriman/core/report/test_report.py
@@ -18,6 +18,16 @@ def test_report_failure(configuration: Configuration, mocker: MockerFixture) ->
         Report.load("x86_64", configuration, ReportSettings.HTML.name).run(Path("path"))
 
 
+def test_report_dummy(configuration: Configuration, mocker: MockerFixture) -> None:
+    """
+    must construct dummy report class
+    """
+    mocker.patch("ahriman.models.report_settings.ReportSettings.from_option", return_value=ReportSettings.Disabled)
+    report_mock = mocker.patch("ahriman.core.report.report.Report.generate")
+    Report.load("x86_64", configuration, ReportSettings.Disabled.name).run(Path("path"))
+    report_mock.assert_called_once()
+
+
 def test_report_html(configuration: Configuration, mocker: MockerFixture) -> None:
     """
     must generate html report
diff --git a/tests/ahriman/core/repository/test_cleaner.py b/tests/ahriman/core/repository/test_cleaner.py
index 052644b7..f848fb8b 100644
--- a/tests/ahriman/core/repository/test_cleaner.py
+++ b/tests/ahriman/core/repository/test_cleaner.py
@@ -1,3 +1,4 @@
+import pytest
 import shutil
 
 from pathlib import Path
@@ -20,6 +21,14 @@ def _mock_clear_check() -> None:
     ])
 
 
+def test_packages_built(cleaner: Cleaner) -> None:
+    """
+    must raise NotImplemented for missing method
+    """
+    with pytest.raises(NotImplementedError):
+        cleaner.packages_built()
+
+
 def test_clear_build(cleaner: Cleaner, mocker: MockerFixture) -> None:
     """
     must remove directories with sources
diff --git a/tests/ahriman/core/repository/test_executor.py b/tests/ahriman/core/repository/test_executor.py
index 4a853fc1..7a7ddef8 100644
--- a/tests/ahriman/core/repository/test_executor.py
+++ b/tests/ahriman/core/repository/test_executor.py
@@ -1,23 +1,34 @@
+import pytest
+
 from pathlib import Path
 from pytest_mock import MockerFixture
 from unittest import mock
 
+from ahriman.core.report.report import Report
 from ahriman.core.repository.executor import Executor
+from ahriman.core.upload.upload import Upload
 from ahriman.models.package import Package
 
 
+def test_packages(executor: Executor) -> None:
+    """
+    must raise NotImplemented for missing method
+    """
+    with pytest.raises(NotImplementedError):
+        executor.packages()
+
+
 def test_process_build(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must run build process
     """
-    mocker.patch("ahriman.core.repository.executor.Executor.packages_built", return_value=[package_ahriman])
     mocker.patch("ahriman.core.build_tools.task.Task.build", return_value=[Path(package_ahriman.base)])
     mocker.patch("ahriman.core.build_tools.task.Task.init")
     move_mock = mocker.patch("shutil.move")
     status_client_mock = mocker.patch("ahriman.core.status.client.Client.set_building")
+    built_packages_mock = mocker.patch("ahriman.core.repository.executor.Executor.packages_built")
 
-    # must return list of built packages
-    assert executor.process_build([package_ahriman]) == [package_ahriman]
+    executor.process_build([package_ahriman])
     # must move files (once)
     move_mock.assert_called_once()
     # must update status
@@ -25,6 +36,8 @@ def test_process_build(executor: Executor, package_ahriman: Package, mocker: Moc
     # must clear directory
     from ahriman.core.repository.cleaner import Cleaner
     Cleaner.clear_build.assert_called_once()
+    # must return build packages after all
+    built_packages_mock.assert_called_once()
 
 
 def test_process_build_failure(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
@@ -68,7 +81,7 @@ def test_process_remove_base_multiple(executor: Executor, package_python_schedul
     executor.process_remove([package_python_schedule.base])
     # must remove via alpm wrapper
     repo_remove_mock.assert_has_calls([
-        mock.call(package, Path(props.filename))
+        mock.call(package, props.filepath)
         for package, props in package_python_schedule.packages.items()
     ], any_order=True)
     # must update status
@@ -91,6 +104,15 @@ def test_process_remove_base_single(executor: Executor, package_python_schedule:
     status_client_mock.assert_not_called()
 
 
+def test_process_remove_failed(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must suppress remove errors
+    """
+    mocker.patch("ahriman.core.repository.executor.Executor.packages", return_value=[package_ahriman])
+    mocker.patch("ahriman.core.alpm.repo.Repo.remove", side_effect=Exception())
+    executor.process_remove([package_ahriman.base])
+
+
 def test_process_remove_nothing(executor: Executor, package_ahriman: Package, package_python_schedule: Package,
                                 mocker: MockerFixture) -> None:
     """
@@ -103,6 +125,18 @@ def test_process_remove_nothing(executor: Executor, package_ahriman: Package, pa
     repo_remove_mock.assert_not_called()
 
 
+def test_process_report(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must process report
+    """
+    mocker.patch("ahriman.core.repository.executor.Executor.packages", return_value=[package_ahriman])
+    mocker.patch("ahriman.core.report.report.Report.load", return_value=Report("x86_64", executor.configuration))
+    report_mock = mocker.patch("ahriman.core.report.report.Report.run")
+
+    executor.process_report(["dummy"])
+    report_mock.assert_called_once()
+
+
 def test_process_report_auto(executor: Executor, mocker: MockerFixture) -> None:
     """
     must process report in auto mode if no targets supplied
@@ -113,7 +147,18 @@ def test_process_report_auto(executor: Executor, mocker: MockerFixture) -> None:
     configuration_getlist_mock.assert_called_once()
 
 
-def test_process_sync_auto(executor: Executor, mocker: MockerFixture) -> None:
+def test_process_upload(executor: Executor, mocker: MockerFixture) -> None:
+    """
+    must process sync in auto mode if no targets supplied
+    """
+    mocker.patch("ahriman.core.upload.upload.Upload.load", return_value=Upload("x86_64", executor.configuration))
+    upload_mock = mocker.patch("ahriman.core.upload.upload.Upload.run")
+
+    executor.process_sync(["dummy"])
+    upload_mock.assert_called_once()
+
+
+def test_process_upload_auto(executor: Executor, mocker: MockerFixture) -> None:
     """
     must process sync in auto mode if no targets supplied
     """
@@ -134,7 +179,7 @@ def test_process_update(executor: Executor, package_ahriman: Package, mocker: Mo
     status_client_mock = mocker.patch("ahriman.core.status.client.Client.set_success")
 
     # must return complete
-    assert executor.process_update([Path(package.filename) for package in package_ahriman.packages.values()])
+    assert executor.process_update([package.filepath for package in package_ahriman.packages.values()])
     # must move files (once)
     move_mock.assert_called_once()
     # must sign package
@@ -158,14 +203,23 @@ def test_process_update_group(executor: Executor, package_python_schedule: Packa
     repo_add_mock = mocker.patch("ahriman.core.alpm.repo.Repo.add")
     status_client_mock = mocker.patch("ahriman.core.status.client.Client.set_success")
 
-    executor.process_update([Path(package.filename) for package in package_python_schedule.packages.values()])
+    executor.process_update([package.filepath for package in package_python_schedule.packages.values()])
     repo_add_mock.assert_has_calls([
-        mock.call(executor.paths.repository / package.filename)
+        mock.call(executor.paths.repository / package.filepath)
         for package in package_python_schedule.packages.values()
     ], any_order=True)
     status_client_mock.assert_called_with(package_python_schedule)
 
 
+def test_process_empty_filename(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must skip update for package which does not have path
+    """
+    package_ahriman.packages[package_ahriman.base].filename = None
+    mocker.patch("ahriman.models.package.Package.load", return_value=package_ahriman)
+    executor.process_update([package.filepath for package in package_ahriman.packages.values()])
+
+
 def test_process_update_failed(executor: Executor, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must process update for failed package
@@ -174,7 +228,7 @@ def test_process_update_failed(executor: Executor, package_ahriman: Package, moc
     mocker.patch("ahriman.models.package.Package.load", return_value=package_ahriman)
     status_client_mock = mocker.patch("ahriman.core.status.client.Client.set_failed")
 
-    executor.process_update([Path(package.filename) for package in package_ahriman.packages.values()])
+    executor.process_update([package.filepath for package in package_ahriman.packages.values()])
     status_client_mock.assert_called_once()
 
 
@@ -185,4 +239,4 @@ def test_process_update_failed_on_load(executor: Executor, package_ahriman: Pack
     mocker.patch("shutil.move")
     mocker.patch("ahriman.models.package.Package.load", side_effect=Exception())
 
-    assert executor.process_update([Path(package.filename) for package in package_ahriman.packages.values()])
+    assert executor.process_update([package.filepath for package in package_ahriman.packages.values()])
diff --git a/tests/ahriman/core/repository/test_repository.py b/tests/ahriman/core/repository/test_repository.py
index e2d56b2f..5995b608 100644
--- a/tests/ahriman/core/repository/test_repository.py
+++ b/tests/ahriman/core/repository/test_repository.py
@@ -31,3 +31,28 @@ def test_packages(package_ahriman: Package, package_python_schedule: Package,
     expected = set(package_ahriman.packages.keys())
     expected.update(package_python_schedule.packages.keys())
     assert set(archives) == expected
+
+
+def test_packages_failed(repository: Repository, mocker: MockerFixture) -> None:
+    """
+    must skip packages which cannot be loaded
+    """
+    mocker.patch("pathlib.Path.iterdir", return_value=[Path("a.pkg.tar.xz")])
+    mocker.patch("ahriman.models.package.Package.load", side_effect=Exception())
+    assert not repository.packages()
+
+
+def test_packages_not_package(repository: Repository, mocker: MockerFixture) -> None:
+    """
+    must skip not packages from iteration
+    """
+    mocker.patch("pathlib.Path.iterdir", return_value=[Path("a.tar.xz")])
+    assert not repository.packages()
+
+
+def test_packages_built(repository: Repository, mocker: MockerFixture) -> None:
+    """
+    must return build packages
+    """
+    mocker.patch("pathlib.Path.iterdir", return_value=[Path("a.tar.xz"), Path("b.pkg.tar.xz")])
+    assert repository.packages_built() == [Path("b.pkg.tar.xz")]
diff --git a/tests/ahriman/core/repository/test_update_handler.py b/tests/ahriman/core/repository/test_update_handler.py
index 125abfa1..07d28d53 100644
--- a/tests/ahriman/core/repository/test_update_handler.py
+++ b/tests/ahriman/core/repository/test_update_handler.py
@@ -1,9 +1,19 @@
+import pytest
+
 from pytest_mock import MockerFixture
 
 from ahriman.core.repository.update_handler import UpdateHandler
 from ahriman.models.package import Package
 
 
+def test_packages(update_handler: UpdateHandler) -> None:
+    """
+    must raise NotImplemented for missing method
+    """
+    with pytest.raises(NotImplementedError):
+        update_handler.packages()
+
+
 def test_updates_aur(update_handler: UpdateHandler, package_ahriman: Package,
                      mocker: MockerFixture) -> None:
     """
diff --git a/tests/ahriman/core/sign/test_gpg.py b/tests/ahriman/core/sign/test_gpg.py
index f545671f..b5659747 100644
--- a/tests/ahriman/core/sign/test_gpg.py
+++ b/tests/ahriman/core/sign/test_gpg.py
@@ -53,6 +53,24 @@ def test_repository_sign_args_skip_4(gpg: GPG) -> None:
     assert not gpg.repository_sign_args
 
 
+def test_sign_command(gpg_with_key: GPG) -> None:
+    """
+    must generate sign command
+    """
+    assert gpg_with_key.sign_command(Path("a"), gpg_with_key.default_key)
+
+
+def test_process(gpg_with_key: GPG, mocker: MockerFixture) -> None:
+    """
+    must call process method correctly
+    """
+    result = [Path("a"), Path("a.sig")]
+    check_output_mock = mocker.patch("ahriman.core.sign.gpg.GPG._check_output")
+
+    assert gpg_with_key.process(Path("a"), gpg_with_key.default_key) == result
+    check_output_mock.assert_called()
+
+
 def test_sign_package_1(gpg_with_key: GPG, mocker: MockerFixture) -> None:
     """
     must sign package
diff --git a/tests/ahriman/core/status/test_watcher.py b/tests/ahriman/core/status/test_watcher.py
index 114c2489..5baadb1f 100644
--- a/tests/ahriman/core/status/test_watcher.py
+++ b/tests/ahriman/core/status/test_watcher.py
@@ -51,6 +51,21 @@ def test_cache_load_no_file(watcher: Watcher, mocker: MockerFixture) -> None:
     assert not watcher.known
 
 
+def test_cache_load_package_load_error(watcher: Watcher, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must not fail on json errors
+    """
+    response = {"packages": [pytest.helpers.get_package_status_extended(package_ahriman)]}
+
+    mocker.patch("pathlib.Path.is_file", return_value=True)
+    mocker.patch("pathlib.Path.open")
+    mocker.patch("ahriman.models.package.Package.from_json", side_effect=Exception())
+    mocker.patch("json.load", return_value=response)
+
+    watcher._cache_load()
+    assert not watcher.known
+
+
 def test_cache_load_unknown(watcher: Watcher, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must not load unknown package
diff --git a/tests/ahriman/core/status/test_web_client.py b/tests/ahriman/core/status/test_web_client.py
index 8d5cc2e7..c42f410a 100644
--- a/tests/ahriman/core/status/test_web_client.py
+++ b/tests/ahriman/core/status/test_web_client.py
@@ -1,5 +1,6 @@
 import json
 import pytest
+import requests
 
 from pytest_mock import MockerFixture
 from requests import Response
@@ -44,6 +45,14 @@ def test_add_failed(web_client: WebClient, package_ahriman: Package, mocker: Moc
     web_client.add(package_ahriman, BuildStatusEnum.Unknown)
 
 
+def test_add_failed_http_error(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during addition
+    """
+    mocker.patch("requests.post", side_effect=requests.exceptions.HTTPError())
+    web_client.add(package_ahriman, BuildStatusEnum.Unknown)
+
+
 def test_get_all(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must return all packages status
@@ -69,6 +78,14 @@ def test_get_failed(web_client: WebClient, mocker: MockerFixture) -> None:
     assert web_client.get(None) == []
 
 
+def test_get_failed_http_error(web_client: WebClient, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during status getting
+    """
+    mocker.patch("requests.get", side_effect=requests.exceptions.HTTPError())
+    assert web_client.get(None) == []
+
+
 def test_get_single(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must return single package status
@@ -109,6 +126,14 @@ def test_get_self_failed(web_client: WebClient, mocker: MockerFixture) -> None:
     assert web_client.get_self().status == BuildStatusEnum.Unknown
 
 
+def test_get_self_failed_http_error(web_client: WebClient, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during service status getting
+    """
+    mocker.patch("requests.get", side_effect=requests.exceptions.HTTPError())
+    assert web_client.get_self().status == BuildStatusEnum.Unknown
+
+
 def test_remove(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must process package removal
@@ -127,6 +152,14 @@ def test_remove_failed(web_client: WebClient, package_ahriman: Package, mocker:
     web_client.remove(package_ahriman.base)
 
 
+def test_remove_failed_http_error(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during removal
+    """
+    mocker.patch("requests.delete", side_effect=requests.exceptions.HTTPError())
+    web_client.remove(package_ahriman.base)
+
+
 def test_update(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
     """
     must process package update
@@ -145,6 +178,14 @@ def test_update_failed(web_client: WebClient, package_ahriman: Package, mocker:
     web_client.update(package_ahriman.base, BuildStatusEnum.Unknown)
 
 
+def test_update_failed_http_error(web_client: WebClient, package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during update
+    """
+    mocker.patch("requests.post", side_effect=requests.exceptions.HTTPError())
+    web_client.update(package_ahriman.base, BuildStatusEnum.Unknown)
+
+
 def test_update_self(web_client: WebClient, mocker: MockerFixture) -> None:
     """
     must process service update
@@ -161,3 +202,11 @@ def test_update_self_failed(web_client: WebClient, mocker: MockerFixture) -> Non
     """
     mocker.patch("requests.post", side_effect=Exception())
     web_client.update_self(BuildStatusEnum.Unknown)
+
+
+def test_update_self_failed_http_error(web_client: WebClient, mocker: MockerFixture) -> None:
+    """
+    must suppress any exception happened during service update
+    """
+    mocker.patch("requests.post", side_effect=requests.exceptions.HTTPError())
+    web_client.update_self(BuildStatusEnum.Unknown)
diff --git a/tests/ahriman/core/test_configuration.py b/tests/ahriman/core/test_configuration.py
index 198dae0d..ebb7eda2 100644
--- a/tests/ahriman/core/test_configuration.py
+++ b/tests/ahriman/core/test_configuration.py
@@ -105,6 +105,14 @@ def test_load_includes_missing(configuration: Configuration) -> None:
     configuration.load_includes()
 
 
+def test_load_includes_no_option(configuration: Configuration) -> None:
+    """
+    must not fail if no option set
+    """
+    configuration.remove_option("settings", "include")
+    configuration.load_includes()
+
+
 def test_load_logging_fallback(configuration: Configuration, mocker: MockerFixture) -> None:
     """
     must fallback to stderr without errors
diff --git a/tests/ahriman/core/test_util.py b/tests/ahriman/core/test_util.py
index e79ce29e..7f82f3b7 100644
--- a/tests/ahriman/core/test_util.py
+++ b/tests/ahriman/core/test_util.py
@@ -4,6 +4,7 @@ import subprocess
 
 from pytest_mock import MockerFixture
 
+from ahriman.core.exceptions import InvalidOption
 from ahriman.core.util import check_output, package_like, pretty_datetime, pretty_size
 from ahriman.models.package import Package
 
@@ -124,6 +125,14 @@ def test_pretty_size_pbytes() -> None:
     assert abbrev == "GiB"
 
 
+def test_pretty_size_pbytes_failure() -> None:
+    """
+    must raise exception if level >= 4 supplied
+    """
+    with pytest.raises(InvalidOption):
+        pretty_size(42 * 1024 * 1024 * 1024 * 1024, 4).split()
+
+
 def test_pretty_size_empty() -> None:
     """
     must generate empty string for None value
diff --git a/tests/ahriman/core/upload/test_upload.py b/tests/ahriman/core/upload/test_upload.py
index 99815c57..37664fc1 100644
--- a/tests/ahriman/core/upload/test_upload.py
+++ b/tests/ahriman/core/upload/test_upload.py
@@ -18,6 +18,16 @@ def test_upload_failure(configuration: Configuration, mocker: MockerFixture) ->
         Upload.load("x86_64", configuration, UploadSettings.Rsync.name).run(Path("path"))
 
 
+def test_report_dummy(configuration: Configuration, mocker: MockerFixture) -> None:
+    """
+    must construct dummy upload class
+    """
+    mocker.patch("ahriman.models.upload_settings.UploadSettings.from_option", return_value=UploadSettings.Disabled)
+    upload_mock = mocker.patch("ahriman.core.upload.upload.Upload.sync")
+    Upload.load("x86_64", configuration, UploadSettings.Disabled.name).run(Path("path"))
+    upload_mock.assert_called_once()
+
+
 def test_upload_rsync(configuration: Configuration, mocker: MockerFixture) -> None:
     """
     must upload via rsync
diff --git a/tests/ahriman/models/test_build_status.py b/tests/ahriman/models/test_build_status.py
index f7c78cf2..fe08a94a 100644
--- a/tests/ahriman/models/test_build_status.py
+++ b/tests/ahriman/models/test_build_status.py
@@ -1,3 +1,5 @@
+import datetime
+
 from ahriman.models.build_status import BuildStatus, BuildStatusEnum
 
 
@@ -36,3 +38,59 @@ def test_build_status_from_json_view(build_status_failed: BuildStatus) -> None:
     must construct same object from json
     """
     assert BuildStatus.from_json(build_status_failed.view()) == build_status_failed
+
+
+def test_build_status_pretty_print(build_status_failed: BuildStatus) -> None:
+    """
+    must return string in pretty print function
+    """
+    assert build_status_failed.pretty_print()
+    assert isinstance(build_status_failed.pretty_print(), str)
+
+
+def test_build_status_eq(build_status_failed: BuildStatus) -> None:
+    """
+    must be equal
+    """
+    other = BuildStatus.from_json(build_status_failed.view())
+    assert other == build_status_failed
+
+
+def test_build_status_eq_self(build_status_failed: BuildStatus) -> None:
+    """
+    must be equal itself
+    """
+    assert build_status_failed == build_status_failed
+
+
+def test_build_status_ne_by_status(build_status_failed: BuildStatus) -> None:
+    """
+    must be not equal by status
+    """
+    other = BuildStatus.from_json(build_status_failed.view())
+    other.status = BuildStatusEnum.Success
+    assert build_status_failed != other
+
+
+def test_build_status_ne_by_timestamp(build_status_failed: BuildStatus) -> None:
+    """
+    must be not equal by timestamp
+    """
+    other = BuildStatus.from_json(build_status_failed.view())
+    other.timestamp = datetime.datetime.utcnow().timestamp()
+    assert build_status_failed != other
+
+
+def test_build_status_ne_other(build_status_failed: BuildStatus) -> None:
+    """
+    must be not equal to random object
+    """
+    assert build_status_failed != object()
+
+
+def test_build_status_repr(build_status_failed: BuildStatus) -> None:
+    """
+    must return string in __repr__ function
+    """
+    assert build_status_failed.__repr__()
+    assert isinstance(build_status_failed.__repr__(), str)
diff --git a/tests/ahriman/models/test_package.py b/tests/ahriman/models/test_package.py
index bb5276c0..44ef7006 100644
--- a/tests/ahriman/models/test_package.py
+++ b/tests/ahriman/models/test_package.py
@@ -124,6 +124,17 @@ def test_from_build(package_ahriman: Package, mocker: MockerFixture, resource_pa
     assert package_ahriman == package
 
 
+def test_from_build_failed(package_ahriman: Package, mocker: MockerFixture) -> None:
+    """
+    must raise exception if there are errors during srcinfo load
+    """
+    mocker.patch("pathlib.Path.read_text", return_value="")
+    mocker.patch("ahriman.models.package.parse_srcinfo", return_value=({"packages": {}}, ["an error"]))
+
+    with pytest.raises(InvalidPackageInfo):
+        Package.from_build(Path("path"), package_ahriman.aur_url)
+
+
 def test_from_json_view_1(package_ahriman: Package) -> None:
     """
     must construct same object from json
@@ -190,6 +201,17 @@ def test_load_failure(package_ahriman: Package, pyalpm_handle: MagicMock, mocker
         Package.load(Path("path"), pyalpm_handle, package_ahriman.aur_url)
 
 
+def test_dependencies_failed(mocker: MockerFixture) -> None:
+    """
+    must raise exception if there are errors during srcinfo load
+    """
+    mocker.patch("pathlib.Path.read_text", return_value="")
+    mocker.patch("ahriman.models.package.parse_srcinfo", return_value=({"packages": {}}, ["an error"]))
+
+    with pytest.raises(InvalidPackageInfo):
+        Package.dependencies(Path("path"))
+
+
 def test_dependencies_with_version(mocker: MockerFixture, resource_path_root: Path) -> None:
     """
     must load correct list of dependencies with version
@@ -227,12 +249,25 @@ def test_actual_version_vcs(package_tpacpi_bat_git: Package, repository_paths: R
     assert package_tpacpi_bat_git.actual_version(repository_paths) == "3.1.r13.g4959b52-1"
 
 
+def test_actual_version_srcinfo_failed(package_tpacpi_bat_git: Package, repository_paths: RepositoryPaths,
+                                       mocker: MockerFixture) -> None:
+    """
+    must return same version in case if exception occurred
+    """
+    mocker.patch("ahriman.models.package.Package._check_output", side_effect=Exception())
+    mocker.patch("ahriman.core.build_tools.task.Task.fetch")
+
+    assert package_tpacpi_bat_git.actual_version(repository_paths) == package_tpacpi_bat_git.version
+
+
 def test_actual_version_vcs_failed(package_tpacpi_bat_git: Package, repository_paths: RepositoryPaths,
                                    mocker: MockerFixture) -> None:
     """
     must return same version in case if exception occurred
     """
-    mocker.patch("ahriman.models.package.Package._check_output", side_effect=Exception())
+    mocker.patch("pathlib.Path.read_text", return_value="")
+    mocker.patch("ahriman.models.package.parse_srcinfo", return_value=({"packages": {}}, ["an error"]))
+    mocker.patch("ahriman.models.package.Package._check_output")
     mocker.patch("ahriman.core.build_tools.task.Task.fetch")
 
     assert package_tpacpi_bat_git.actual_version(repository_paths) == package_tpacpi_bat_git.version
@@ -253,3 +288,11 @@ def test_is_outdated_true(package_ahriman: Package, repository_paths: Repository
     other.version = other.version.replace("-1", "-2")
 
     assert package_ahriman.is_outdated(other, repository_paths)
+
+
+def test_build_status_pretty_print(package_ahriman: Package) -> None:
+    """
+    must return string in pretty print function
+    """
+    assert package_ahriman.pretty_print()
+    assert isinstance(package_ahriman.pretty_print(), str)
diff --git a/tests/ahriman/models/test_package_desciption.py b/tests/ahriman/models/test_package_desciption.py
index 4fb020e5..3229704a 100644
--- a/tests/ahriman/models/test_package_desciption.py
+++ b/tests/ahriman/models/test_package_desciption.py
@@ -1,3 +1,4 @@
+from dataclasses import asdict
 from unittest.mock import MagicMock
 
 from ahriman.models.package_description import PackageDescription
@@ -19,6 +20,22 @@ def test_filepath_empty(package_description_ahriman: PackageDescription) -> None
     assert package_description_ahriman.filepath is None
 
 
+def test_from_json(package_description_ahriman: PackageDescription) -> None:
+    """
+    must construct description from json object
+    """
+    assert PackageDescription.from_json(asdict(package_description_ahriman)) == package_description_ahriman
+
+
+def test_from_json_with_unknown_fields(package_description_ahriman: PackageDescription) -> None:
+    """
+    must construct description from json object containing unknown fields
+    """
+    dump = asdict(package_description_ahriman)
+    dump.update(unknown_field="value")
+    assert PackageDescription.from_json(dump) == package_description_ahriman
+
+
 def test_from_package(package_description_ahriman: PackageDescription,
                       pyalpm_package_description_ahriman: MagicMock) -> None:
     """
diff --git a/tests/ahriman/web/views/test_view_ahriman.py b/tests/ahriman/web/views/test_view_ahriman.py
index 250eb731..258dc635 100644
--- a/tests/ahriman/web/views/test_view_ahriman.py
+++ b/tests/ahriman/web/views/test_view_ahriman.py
@@ -1,4 +1,5 @@
 from aiohttp.test_utils import TestClient
+from pytest_mock import MockerFixture
 
 from ahriman.models.build_status import BuildStatus, BuildStatusEnum
 
@@ -35,3 +36,14 @@ async def test_post_exception(client: TestClient) -> None:
     """
     post_response = await client.post("/api/v1/ahriman", json={})
     assert post_response.status == 400
+
+
+async def test_post_exception_inside(client: TestClient, mocker: MockerFixture) -> None:
+    """
+    exception handler must handle 500 errors
+    """
+    payload = {"status": BuildStatusEnum.Success.value}
+    mocker.patch("ahriman.core.status.watcher.Watcher.update_self", side_effect=Exception())
+
+    post_response = await client.post("/api/v1/ahriman", json=payload)
+    assert post_response.status == 500