Add better logging when failing to load a test.

typ/tests/main_test.py

Index: typ/tests/main_test.py
diff --git a/typ/tests/main_test.py b/typ/tests/main_test.py
index 75fb3354b096ccfbe7fe8e4a5067dbe40fdd4d77..bec1c554b81af27e1c2133c2ffada5d3dac06a0d 100644
--- a/typ/tests/main_test.py
+++ b/typ/tests/main_test.py
@@ -358,8 +358,8 @@ class TestCli(test_case.MainTestCase):
         self.check(['--help'], ret=0, rout='.*', err='')
 
     def test_import_failure_missing_file(self):
-        self.check(['-l', 'foo'], ret=1, err='',
-                   rout='Failed to load "foo".*')
+        _, out, _, _ = self.check(['-l', 'foo'], ret=1, err='')
+        self.assertIn('Failed to load "foo" in find_tests', out)

[nednguyen, 2016/09/24 01:51:45]

Can you assert the out message contains the exception about missing file as
well?

[Dirk Pranke, 2016/10/11 23:48:33]

Done.

 
     def test_import_failure_missing_package(self):
         files = {'foo.py': d("""\
@@ -370,13 +370,13 @@ class TestCli(test_case.MainTestCase):
                                 def test_case(self):
                                     pass
                              """)}
-        self.check(['-l', 'foo.py'], files=files, ret=1, err='',
-                   rout=('Failed to load "foo.py":'))
+        _, out, _, _ = self.check(['-l', 'foo.py'], files=files, ret=1, err='')
+        self.assertIn('Failed to load "foo.py" in find_tests', out)

[nednguyen, 2016/09/24 01:51:45]

ditto

[Dirk Pranke, 2016/10/11 23:48:33]

Done.

 
     def test_import_failure_no_tests(self):
         files = {'foo.py': 'import unittest'}
-        self.check(['-l', 'foo.bar'], files=files, ret=1, err='',
-                   rout='Failed to load "foo.bar":.*')
+        _, out, _, _ = self.check(['-l', 'foo.bar'], files=files, ret=1, err='')
+        self.assertIn('Failed to load "foo.bar" in find_tests', out)

[Dirk Pranke, 2016/10/11 23:48:33]

I'm not actually sure what I thought I was testing here originally, but I'm
changing this test to assert that we didn't find any tests to run.

 
     def test_import_failure_syntax_error(self):
         files = {'syn_test.py': d("""\