1 files changed, 89 insertions, 0 deletions
diff --git a/test/test_config.py b/test/test_config.py
new file mode 100644
index 00000000..a1abf51b
--- /dev/null
+++ b/test/test_config.py
@@ -0,0 +1,89 @@
+"""Test the config file handling for coverage.py"""
+
+import os, sys
+import coverage
+
+sys.path.insert(0, os.path.split(__file__)[0]) # Force relative import for Py3k
+from coveragetest import CoverageTest
+
+
+class ConfigTest(CoverageTest):
+    """Tests of the config file support."""
+
+    def test_default_config(self):
+        # Just constructing a coverage() object gets the right defaults.
+        cov = coverage.coverage()
+        self.assertFalse(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, ".coverage")
+
+    def test_arguments(self):
+        # Arguments to the constructor are applied to the configuation.
+        cov = coverage.coverage(timid=True, data_file="fooey.dat")
+        self.assert_(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, "fooey.dat")
+
+    def test_config_file(self):
+        # A .coveragerc file will be read into the configuration.
+        self.make_file(".coveragerc", """\
+            # This is just a bogus .rc file for testing.
+            [run]
+            timid =         True
+            data_file =     .hello_kitty.data
+            """)
+        cov = coverage.coverage()
+        self.assert_(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, ".hello_kitty.data")
+
+    def test_named_config_file(self):
+        # You can name the config file what you like.
+        self.make_file("my_cov.ini", """\
+            [run]
+            timid = True
+            ; I wouldn't really use this as a data file...
+            data_file = delete.me
+            """)
+        cov = coverage.coverage(config_file="my_cov.ini")
+        self.assert_(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, "delete.me")
+
+    def test_ignored_config_file(self):
+        # You can disable reading the .coveragerc file.
+        self.make_file(".coveragerc", """\
+            [run]
+            timid = True
+            data_file = delete.me
+            """)
+        cov = coverage.coverage(config_file=False)
+        self.assertFalse(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, ".coverage")
+
+    def test_config_file_then_args(self):
+        # The arguments override the .coveragerc file.
+        self.make_file(".coveragerc", """\
+            [run]
+            timid = True
+            data_file = weirdo.file
+            """)
+        cov = coverage.coverage(timid=False, data_file=".mycov")
+        self.assertFalse(cov.config.timid)
+        self.assertFalse(cov.config.branch)
+        self.assertEqual(cov.config.data_file, ".mycov")
+
+    def test_data_file_from_environment(self):
+        # There's an environment variable for the data_file.
+        self.make_file(".coveragerc", """\
+            [run]
+            timid = True
+            data_file = weirdo.file
+            """)
+        self.set_environ("COVERAGE_FILE", "fromenv.dat")
+        cov = coverage.coverage()
+        self.assertEqual(cov.config.data_file, "fromenv.dat")
+        # But the constructor args override the env var.
+        cov = coverage.coverage(data_file="fromarg.dat")
+        self.assertEqual(cov.config.data_file, "fromarg.dat")