Add `--no_color` option for uncolored output

README.mdwn

@@ -127,7 +127,7 @@ Output of the `./mjt.py --help`
 ```
 usage: mjt.py [-h] [--only_incorrect_tests] [--produce_no_reports]
               [--produce_all_reports] [--parallel]
-              [--output_no_incorrect_reports] [--ci_testing]
+              [--output_no_incorrect_reports] [--no_color] [--ci_testing]
               [--log_level LOG_LEVEL]
               {all,lexer,syntax,ast,semantic,exec} MJ_RUN
 
@@ -151,6 +151,7 @@ optional arguments:
   --parallel            Run the tests in parallel
   --output_no_incorrect_reports
                         Output the long report for every incorrect test case
+  --no_color            Output no color codes
   --ci_testing          In mode X the succeeding test cases of later
                         modes/phases should also succeed in this mode, and
                         failing test cases of prior modes/phases should also

mjtest/cli.py

@@ -48,6 +48,8 @@ if True:#__name__ == '__main__':
                         help="Run the tests in parallel")
     parser.add_argument("--output_no_incorrect_reports", action="store_true", default=False,
                         help="Output the long report for every incorrect test case")
+    parser.add_argument("--no_color", action="store_true", default=False,
+                        help="Output no color codes")
     parser.add_argument("--ci_testing", action="store_true", default=False,
                         help="In mode X the succeeding test cases of later modes/phases should also succeed in "
                              "this mode, and failing test cases of prior modes/phases should also fail in this phase.")

mjtest/environment.py

@@ -6,7 +6,8 @@ import tempfile
 from datetime import datetime
 import time
 from mjtest.util.shell import execute
-from mjtest.util.utils import get_mjtest_basedir
+from mjtest.util.utils import get_mjtest_basedir, disable_colored_output
+import mjtest.util.utils
 from typing import Tuple, List
 from preproc.preproc.preprocessor import PreProcessor, PreProcessorError, is_importable_file
 
@@ -45,7 +46,9 @@ class Environment:
                  timeout: int = 30, report_dir: str = "", log_level: str = "warn",
                  produce_no_reports: bool = True, output_no_incorrect_reports: bool = False,
                  produce_all_reports: bool = False, report_subdir: str = None,
-                 ci_testing: bool = False):
+                 ci_testing: bool = False, no_color: bool = False):
+        if no_color:
+            disable_colored_output()
         self.mode = mode
         self.mj_run_cmd = os.path.realpath(mj_run)
 

mjtest/util/utils.py

@@ -3,6 +3,18 @@ from os import path
 import sys
 from typing import Tuple
 
+COLOR_OUTPUT_IF_POSSIBLE = True
+
+try:
+    import termcolor
+except ImportError:
+    COLOR_OUTPUT_IF_POSSIBLE = False
+
+
+def disable_colored_output():
+    global COLOR_OUTPUT_IF_POSSIBLE
+    COLOR_OUTPUT_IF_POSSIBLE = False
+
 
 def get_mjtest_basedir() -> str:
     return path.dirname(path.dirname(path.dirname(path.realpath(__file__))))
@@ -12,10 +24,10 @@ def colored(text: str, *args, **kwargs):
     """
     Wrapper around termcolor.colored (if it's loadable)
     """
-    try:
-        from termcolor import colored
-        return colored(text, *args, **kwargs)
-    except ImportError:
+    global COLOR_OUTPUT_IF_POSSIBLE
+    if COLOR_OUTPUT_IF_POSSIBLE:
+        return termcolor.colored(text, *args, **kwargs)
+    else:
         return text
 
 
@@ -23,8 +35,8 @@ def cprint(text: str, *args, **kwargs):
     """
     Wrapper around termcolor.cprint (if it's loadable)
     """
-    try:
-        from termcolor import cprint
-        cprint(text, *args, **kwargs)
-    except ImportError:
+    global COLOR_OUTPUT_IF_POSSIBLE
+    if COLOR_OUTPUT_IF_POSSIBLE:
+        termcolor.cprint(text, *args, **kwargs)
+    else:
         print(text)
\ No newline at end of file