Implement tests for --fixtures-per-test

testing/python/show_fixtures_per_test.py

@@ -0,0 +1,137 @@
+# -*- coding: utf-8 -*-
+
+
+def test_no_items_should_not_show_output(testdir):
+    result = testdir.runpytest('--fixtures-per-test')
+    assert 'fixtures used by' not in result.stdout.str()
+    assert result.ret == 0
+
+
+def test_fixtures_in_module(testdir):
+    p = testdir.makepyfile('''
+        import pytest
+        @pytest.fixture
+        def _arg0():
+            """hidden arg0 fixture"""
+        @pytest.fixture
+        def arg1():
+            """arg1 docstring"""
+        def test_arg1(arg1):
+            pass
+    ''')
+
+    result = testdir.runpytest("--fixtures-per-test", p)
+    assert result.ret == 0
+
+    result.stdout.fnmatch_lines([
+        '*fixtures used by test_arg1*',
+        '*from test_fixtures_in_module.py:9*',
+        'arg1',
+        '    arg1 docstring',
+    ])
+    assert "_arg0" not in result.stdout.str()
+
+
+def test_fixtures_in_conftest(testdir):
+    testdir.makeconftest('''
+        import pytest
+        @pytest.fixture
+        def arg1():
+            """arg1 docstring"""
+        @pytest.fixture
+        def arg2():
+            """arg2 docstring"""
+        @pytest.fixture
+        def arg3(arg1, arg2):
+            """arg3
+            docstring
+            """
+    ''')
+    p = testdir.makepyfile('''
+        def test_arg2(arg2):
+            pass
+        def test_arg3(arg3):
+            pass
+    ''')
+    result = testdir.runpytest("--fixtures-per-test", p)
+    assert result.ret == 0
+
+    result.stdout.fnmatch_lines([
+        '*fixtures used by test_arg2*',
+        '*from test_fixtures_in_conftest.py:2*',
+        'arg2',
+        '    arg2 docstring',
+        '*fixtures used by test_arg3*',
+        '*from test_fixtures_in_conftest.py:4*',
+        'arg1',
+        '    arg1 docstring',
+        'arg2',
+        '    arg2 docstring',
+        'arg3',
+        '    arg3',
+        '    docstring',
+    ])
+
+
+def test_should_show_fixtures_used_by_test(testdir):
+    testdir.makeconftest('''
+        import pytest
+        @pytest.fixture
+        def arg1():
+            """arg1 from conftest"""
+        @pytest.fixture
+        def arg2():
+            """arg2 from conftest"""
+    ''')
+    p = testdir.makepyfile('''
+        import pytest
+        @pytest.fixture
+        def arg1():
+            """arg1 from testmodule"""
+        def test_args(arg1, arg2):
+            pass
+    ''')
+    result = testdir.runpytest("--fixtures-per-test", p)
+    assert result.ret == 0
+
+    result.stdout.fnmatch_lines([
+        '*fixtures used by test_args*',
+        '*from test_should_show_fixtures_used_by_test.py:6*',
+        'arg1',
+        '    arg1 from testmodule',
+        'arg2',
+        '    arg2 from conftest',
+    ])
+
+
+def test_verbose_include_private_fixtures_and_loc(testdir):
+    testdir.makeconftest('''
+        import pytest
+        @pytest.fixture
+        def _arg1():
+            """_arg1 from conftest"""
+        @pytest.fixture
+        def arg2(_arg1):
+            """arg2 from conftest"""
+    ''')
+    p = testdir.makepyfile('''
+        import pytest
+        @pytest.fixture
+        def arg3():
+            """arg3 from testmodule"""
+        def test_args(arg2, arg3):
+            pass
+    ''')
+    result = testdir.runpytest("--fixtures-per-test", "-v", p)
+    assert result.ret == 0
+
+    result.stdout.fnmatch_lines([
+        '*fixtures used by test_args*',
+        '*from test_verbose_include_private_fixtures_and_loc.py:6*',
+        '_arg1 -- conftest.py:3',
+        '    _arg1 from conftest',
+        'arg2 -- conftest.py:6',
+        '    arg2 from conftest',
+        'arg3 -- test_verbose_include_private_fixtures_and_loc.py:3',
+        '    arg3 from testmodule',
+    ])