Standardize matching test files structure, add test_main.py and test_commands.py, and update GEMINI.md

tests/test_commands.py

@@ -0,0 +1,49 @@
+from pathlib import Path
+import toml
+from click.testing import CliRunner
+from ctf.commands import basic_group
+
+TEST_ENV = Path("tests/env")
+
+def test_basic_test_cli():
+    """
+    Verifies that 'basic test' runs successfully and outputs 'hello from test'.
+    """
+    runner = CliRunner()
+    result = runner.invoke(basic_group, ["test"])
+    assert result.exit_code == 0
+    assert "hello from test" in result.output
+
+def test_basic_greet_cli():
+    """
+    Verifies that 'basic greet' runs successfully and greets the name argument.
+    """
+    runner = CliRunner()
+    result = runner.invoke(basic_group, ["greet", "Alice"])
+    assert result.exit_code == 0
+    assert "hello Alice" in result.output
+
+def test_basic_set_flag_format_cli():
+    """
+    Verifies that 'basic set-flag-format' CLI command writes the pattern to config.toml.
+    """
+    from ctf.utils import load_config
+    
+    runner = CliRunner()
+    config_file = Path("/home/venus/code/ctf/config.toml")
+    
+    # Save the original config to restore later
+    original_config = load_config(str(config_file))
+    
+    try:
+        result = runner.invoke(basic_group, ["set-flag-format", "TEST_FLAG{[a-z]+}"])
+        assert result.exit_code == 0
+        assert "Flag format set to" in result.output
+        
+        # Verify it was written to config.toml
+        updated_config = load_config(str(config_file))
+        assert updated_config["Competition"]["flag_format"] == "TEST_FLAG{[a-z]+}"
+    finally:
+        # Restore original config
+        from ctf.utils import write_config
+        write_config(original_config, str(config_file))