Add conftest.py and remaining test files

tests/integration/test_cli.py

@@ -0,0 +1,91 @@
+"""Integration tests for CLI commands."""
+
+import os
+import pytest
+from click.testing import CliRunner
+from memory_manager.cli.main import cli
+
+TEST_DB_PATH = ".memory/test_cli_memory.db"
+
+
+def clean_test_db():
+    if os.path.exists(TEST_DB_PATH):
+        os.remove(TEST_DB_PATH)
+    db_dir = os.path.dirname(TEST_DB_PATH)
+    if db_dir and not os.path.exists(db_dir):
+        os.makedirs(db_dir, exist_ok=True)
+
+
+@pytest.fixture(autouse=True)
+def reset_env():
+    clean_test_db()
+    os.environ["MEMORY_DB_PATH"] = TEST_DB_PATH
+    yield
+    clean_test_db()
+
+
+@pytest.fixture
+def runner():
+    return CliRunner()
+
+
+def test_cli_version(runner):
+    result = runner.invoke(cli, ["--version"])
+    assert result.exit_code == 0
+    assert "0.1.0" in result.output
+
+
+def test_add_command_no_tags(runner):
+    result = runner.invoke(cli, [
+        "add",
+        "--title", "Test Decision",
+        "--content", "We decided to use PostgreSQL",
+        "--category", "decision",
+    ])
+    assert result.exit_code == 0
+
+
+def test_add_command_invalid_category(runner):
+    result = runner.invoke(cli, [
+        "add",
+        "--title", "Test",
+        "--content", "Content",
+        "--category", "invalid_category",
+    ])
+    assert result.exit_code != 0
+
+
+def test_list_command_empty(runner):
+    result = runner.invoke(cli, ["list"])
+    assert result.exit_code == 0
+    assert "No entries found" in result.output
+
+
+def test_get_command_empty(runner):
+    result = runner.invoke(cli, ["get", "1"])
+    assert result.exit_code == 0
+    assert "not found" in result.output
+
+
+def test_delete_command_not_found(runner):
+    result = runner.invoke(cli, ["delete", "1"])
+    assert result.exit_code == 0
+    assert "not found" in result.output
+
+
+def test_commit_command_empty(runner):
+    result = runner.invoke(cli, ["commit", "--message", "Initial commit"])
+    assert result.exit_code == 0
+    assert "Created commit" in result.output
+
+
+def test_log_command(runner):
+    runner.invoke(cli, ["commit", "--message", "Test commit"])
+    result = runner.invoke(cli, ["log"])
+    assert result.exit_code == 0
+    assert "commit" in result.output
+
+
+def test_diff_command_no_commits(runner):
+    result = runner.invoke(cli, ["diff", "abc123", "def456"])
+    assert result.exit_code == 0