feat: implement stats subcommand (#132)

tests/ahriman/core/formatters/conftest.py

@@ -2,9 +2,23 @@ import pytest
 
 from pathlib import Path
 
-from ahriman.core.formatters import AurPrinter, ChangesPrinter, ConfigurationPathsPrinter, ConfigurationPrinter, \
-    PackagePrinter, PatchPrinter, RepositoryPrinter, StatusPrinter, StringPrinter, TreePrinter, UpdatePrinter, \
-    UserPrinter, ValidationPrinter, VersionPrinter
+from ahriman.core.formatters import \
+    AurPrinter, \
+    ChangesPrinter, \
+    ConfigurationPathsPrinter, \
+    ConfigurationPrinter, \
+    EventStatsPrinter, \
+    PackagePrinter, \
+    PackageStatsPrinter, \
+    PatchPrinter, \
+    RepositoryPrinter, \
+    StatusPrinter, \
+    StringPrinter, \
+    TreePrinter, \
+    UpdatePrinter, \
+    UserPrinter, \
+    ValidationPrinter, \
+    VersionPrinter
 from ahriman.models.aur_package import AURPackage
 from ahriman.models.build_status import BuildStatus
 from ahriman.models.changes import Changes
@@ -61,6 +75,17 @@ def configuration_printer() -> ConfigurationPrinter:
     return ConfigurationPrinter("section", {"key_one": "value_one", "key_two": "value_two"})
 
 
+@pytest.fixture
+def event_stats_printer() -> EventStatsPrinter:
+    """
+    fixture for event stats printer
+
+    Returns:
+        EventStatsPrinter: event stats printer test instance
+    """
+    return EventStatsPrinter("event", [5, 2, 7, 9, 8, 0, 4, 1, 6, 3])
+
+
 @pytest.fixture
 def package_ahriman_printer(package_ahriman: Package) -> PackagePrinter:
     """
@@ -75,6 +100,21 @@ def package_ahriman_printer(package_ahriman: Package) -> PackagePrinter:
     return PackagePrinter(package_ahriman, BuildStatus())
 
 
+@pytest.fixture
+def package_stats_printer(package_ahriman: Package, package_python_schedule: Package) -> PackageStatsPrinter:
+    """
+    fixture for package stats printer
+
+    Args:
+        package_ahriman(Package): package fixture
+        package_python_schedule(Package): schedule package fixture
+
+    Returns:
+        PackageStatsPrinter: package stats printer test instance
+    """
+    return PackageStatsPrinter({package_ahriman.base: 4, package_python_schedule.base: 5})
+
+
 @pytest.fixture
 def patch_printer(package_ahriman: Package) -> PatchPrinter:
     """

tests/ahriman/core/formatters/test_event_stats_printer.py

@@ -0,0 +1,29 @@
+from ahriman.core.formatters import EventStatsPrinter
+
+
+def test_properties(event_stats_printer: EventStatsPrinter) -> None:
+    """
+    must return empty properties list
+    """
+    assert event_stats_printer.properties()
+
+
+def test_properties_empty() -> None:
+    """
+    must correctly generate properties for empty events list
+    """
+    assert EventStatsPrinter("event", []).properties()
+
+
+def test_properties_single() -> None:
+    """
+    must skip calculation of the standard deviation for single event
+    """
+    assert EventStatsPrinter("event", [1]).properties()
+
+
+def test_title(event_stats_printer: EventStatsPrinter) -> None:
+    """
+    must return non-empty title
+    """
+    assert event_stats_printer.title() is not None

tests/ahriman/core/formatters/test_package_stats_printer.py

@@ -0,0 +1,30 @@
+from ahriman.core.formatters import PackageStatsPrinter
+
+
+def test_properties(package_stats_printer: PackageStatsPrinter) -> None:
+    """
+    must return non-empty properties list
+    """
+    assert package_stats_printer.properties()
+
+
+def test_properties_sorted(package_stats_printer: PackageStatsPrinter) -> None:
+    """
+    properties list must be sorted in descending order
+    """
+    prop1, prop2 = package_stats_printer.properties()
+    assert prop1.value > prop2.value
+
+
+def test_properties_empty() -> None:
+    """
+    must return empty properties list for the empty events list
+    """
+    assert not PackageStatsPrinter({}).properties()
+
+
+def test_title(package_stats_printer: PackageStatsPrinter) -> None:
+    """
+    must return non-empty title
+    """
+    assert package_stats_printer.title() is not None