Add unit and integration tests for flag-detect CLI command

tests/test_forensics.py

@@ -267,3 +267,31 @@ def test_forensics_signatures_cli():
     assert "Supported Magic Signatures" in result.output
     assert "PNG Image" in result.output
     assert "89504E47" in result.output
+
+def test_forensics_flag_detect_cli_found():
+    """
+    Verifies that 'forensics flag-detect' successfully finds flag patterns.
+    """
+    runner = CliRunner()
+    test_file = TEST_ENV / "flag_data.bin"
+    with open(test_file, "wb") as f:
+        f.write(b"random_data_here_flag{found_statically_in_file}more_data")
+        
+    result = runner.invoke(forensics_group, ["flag-detect", str(test_file)])
+    assert result.exit_code == 0
+    assert "Potential Flag(s) Found" in result.output
+    assert "flag{found_statically_in_file}" in result.output
+
+def test_forensics_flag_detect_cli_not_found():
+    """
+    Verifies that 'forensics flag-detect' displays 'No flag patterns found.'
+    when no flag matches the pattern.
+    """
+    runner = CliRunner()
+    test_file = TEST_ENV / "clean_data.bin"
+    with open(test_file, "wb") as f:
+        f.write(b"this is a completely normal text file without flags.")
+        
+    result = runner.invoke(forensics_group, ["flag-detect", str(test_file)])
+    assert result.exit_code == 0
+    assert "No flag patterns found" in result.output