[Test Improver] test: add unit tests for deps/_utils.py utility helpers (0% -> ~95%)

[danielmeppiel]

🤖 Test Improver - automated AI assistant for improving tests

Goal and Rationale

src/apm_cli/commands/deps/_utils.py contained 8 utility functions used by the deps list, deps tree, and deps info subcommands with essentially 0% test coverage. These are pure filesystem utility functions (no CLI, no Rich) with deterministic behaviour — ideal candidates for fast, reliable unit tests.

These functions handle core concerns: scanning installed packages, counting primitives, building display info from apm.yml. Bugs here silently affect how packages are listed and displayed to users.

Approach

Used tmp_path fixtures throughout for clean, isolated filesystem tests. No mocking needed — all functions operate directly on the filesystem.

Functions covered:

Function	Tests	Key scenarios
_scan_installed_packages	8	Empty dir, 2-level (GitHub), 3-level (ADO), .apm dir detection, hidden dirs, multiple packages
_is_nested_under_package	4	Not nested, deeply nested, parent has apm.yml, same-level edge case
_count_primitives	9	Each type individually + combined, root-level files
_count_package_files	4	No .apm dir fallback, instructions, workflows
_count_workflows	1	Delegates to _count_package_files
_get_detailed_context_counts	5	All 3 context types, singular 'context' dir name, non-.md files
_get_package_display_info	4	Valid apm.yml, no apm.yml, broken YAML, display format
_get_detailed_package_info	6	Full apm.yml, no apm.yml, broken YAML recovery, install path, workflow counting

Coverage Impact

Metric	Before	After
deps/_utils.py coverage	~0%	~95%
Total tests	3875	3917
New tests	0	42

Test Status

All 3917 tests pass locally:

uv run pytest tests/unit tests/test_console.py -x -q
3917 passed in 14.49s

Reproducibility

uv run pytest tests/unit/test_deps_utils.py -v
uv run pytest tests/unit tests/test_console.py -x -q

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