feat(console): add color to standard output and standard error (#86)

* feat(console): add color to standard output and standard error

* test: write updated test for console.py

---------

Co-authored-by: Tailung42 <tailung42@gmail.com>

Author: dhature

src/commitlint/console.py

@@ -3,14 +3,24 @@
 
 NOTE: If any future changes are made to the output implementation,
 they will be done from here.
-
-TODO: Add color on success and error (#5).
 """
 
 import sys
 
 from .config import config
 
+GREEN = "\033[92m"
+RED = "\033[91m"
+RESET = "\033[0m"
+
+
+def green(text: str) -> str:
+    return f"{GREEN}{text}{RESET}"
+
+
+def red(text: str) -> str:
+    return f"{RED}{text}{RESET}"
+
 
 def success(message: str) -> None:
     """
@@ -22,7 +32,7 @@ def success(message: str) -> None:
     if config.quiet:
         return
 
-    sys.stdout.write(f"{message}\n")
+    sys.stdout.write(f"{green(message)}\n")
 
 
 def error(message: str) -> None:
@@ -35,7 +45,7 @@ def error(message: str) -> None:
     if config.quiet:
         return
 
-    sys.stderr.write(f"{message}\n")
+    sys.stderr.write(f"{red(message)}\n")
 
 
 def verbose(message: str) -> None:

tests/test_console.py

@@ -11,7 +11,7 @@
 def test_success(mock_stdout: MagicMock, _mock_config: MagicMock):
     message = "Success message"
     console.success(message)
-    mock_stdout.write.assert_called_once_with(f"{message}\n")
+    mock_stdout.write.assert_called_once_with(f"{console.green(message)}\n")
 
 
 @patch("commitlint.console.config", quiet=True)
@@ -27,7 +27,7 @@ def test_success_for_quiet(mock_stdout: MagicMock, _mock_config: MagicMock):
 def test_error(mock_stderr: MagicMock, _mock_config: MagicMock):
     message = "Error message"
     console.error(message)
-    mock_stderr.write.assert_called_once_with(f"{message}\n")
+    mock_stderr.write.assert_called_once_with(f"{console.red(message)}\n")
 
 
 @patch("commitlint.console.config", quiet=True)