Add test for color hint

Author: lauft

test/color_hint.t

@@ -0,0 +1,99 @@
+#!/usr/bin/env python3
+
+###############################################################################
+#
+# Copyright 2025, Gothenburg Bit Factory.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+# https://opensource.org/license/mit
+#
+###############################################################################
+
+import os
+import sys
+import unittest
+
+# Ensure python finds the local simpletap module
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from basetest import Timew, TestCase
+
+
+class TestColorHint(TestCase):
+    def setUp(self):
+        """Executed before each test in the class"""
+        self.t = Timew()
+
+    def test_color_hint_overrides_config_and_works_when_piped(self):
+        """:color hint should override color=off config and work with piped output"""
+        # Set color to off in config file
+        self.t.config("color", "off")
+        
+        # Track some time
+        self.t("start 1h ago foo")
+        self.t("stop")
+        
+        # Test with day command - output is naturally piped in test framework
+        code, out, err = self.t(":color day")
+        self.assertIn("\033[", out, "Expected colors with :color hint for day command")
+        
+        # Test with summary command
+        code, out, err = self.t(":color summary")
+        self.assertIn("\033[", out, "Expected colors with :color hint for summary command")
+        
+        # Test with tags command
+        code, out, err = self.t(":color tags")
+        self.assertIn("\033[", out, "Expected colors with :color hint for tags command")
+
+    def test_nocolor_hint_disables_color(self):
+        """:nocolor hint should disable color output"""
+        # Set color to on in config file
+        self.t.config("color", "on")
+        
+        # Track some time
+        self.t("start 1h ago bar")
+        self.t("stop")
+        
+        # Use :nocolor hint
+        code, out, err = self.t(":nocolor day")
+        
+        # Check that there are no ANSI color codes
+        self.assertNotIn("\033[", out, "Expected no ANSI color codes when using :nocolor hint")
+
+    def test_no_color_by_default_when_piped(self):
+        """By default, no color should be used when output is piped"""
+        # Don't set any color config (should default to off for pipes)
+        
+        # Track some time
+        self.t("start 2h ago qux")
+        self.t("stop 1h ago")
+        
+        # Without :color hint, output should not have colors when piped
+        # (test framework pipes output by default)
+        code, out, err = self.t("day")
+        self.assertNotIn("\033[", out, "Expected no colors by default when piped")
+        
+        code, out, err = self.t("summary")
+        self.assertNotIn("\033[", out, "Expected no colors in summary by default when piped")
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    unittest.main(testRunner=TAPTestRunner())