Merge pull request #2892 from nicoddemus/merge-master-into-features

Merge upstream/master into features

AUTHORS

@@ -47,6 +47,7 @@ Dave Hunt
 David Díaz-Barquero
 David Mohr
 David Vierra
+Daw-Ran Liou
 Denis Kirisov
 Diego Russo
 Dmitry Dygalo

_pytest/assertion/rewrite.py

@@ -591,23 +591,26 @@ class AssertionRewriter(ast.NodeVisitor):
         # docstrings and __future__ imports.
         aliases = [ast.alias(py.builtin.builtins.__name__, "@py_builtins"),
                    ast.alias("_pytest.assertion.rewrite", "@pytest_ar")]
-        expect_docstring = True
+        doc = getattr(mod, "docstring", None)
+        expect_docstring = doc is None
+        if doc is not None and self.is_rewrite_disabled(doc):
+            return
         pos = 0
-        lineno = 0
+        lineno = 1
         for item in mod.body:
             if (expect_docstring and isinstance(item, ast.Expr) and
                     isinstance(item.value, ast.Str)):
                 doc = item.value.s
-                if "PYTEST_DONT_REWRITE" in doc:
-                    # The module has disabled assertion rewriting.
+                if self.is_rewrite_disabled(doc):
                     return
-                lineno += len(doc) - 1
                 expect_docstring = False
             elif (not isinstance(item, ast.ImportFrom) or item.level > 0 or
                   item.module != "__future__"):
                 lineno = item.lineno
                 break
             pos += 1
+        else:
+            lineno = item.lineno
         imports = [ast.Import([alias], lineno=lineno, col_offset=0)
                    for alias in aliases]
         mod.body[pos:pos] = imports
@@ -633,6 +636,9 @@ class AssertionRewriter(ast.NodeVisitor):
                       not isinstance(field, ast.expr)):
                     nodes.append(field)
 
+    def is_rewrite_disabled(self, docstring):
+        return "PYTEST_DONT_REWRITE" in docstring
+
     def variable(self):
         """Get a new variable."""
         # Use a character invalid in python identifiers to avoid clashing.

_pytest/doctest.py

@@ -127,7 +127,7 @@ class DoctestItem(pytest.Item):
                 lines = ["%03d %s" % (i + test.lineno + 1, x)
                          for (i, x) in enumerate(lines)]
                 # trim docstring error lines to 10
-                lines = lines[example.lineno - 9:example.lineno + 1]
+                lines = lines[max(example.lineno - 9, 0):example.lineno + 1]
             else:
                 lines = ['EXAMPLE LOCATION UNKNOWN, not showing all tests of that example']
                 indent = '>>>'

_pytest/mark.py

@@ -293,8 +293,9 @@ class MarkGenerator:
             pass
         self._markers = l = set()
         for line in self._config.getini("markers"):
-            beginning = line.split(":", 1)
-            x = beginning[0].split("(", 1)[0]
+            marker, _ = line.split(":", 1)
+            marker = marker.rstrip()
+            x = marker.split("(", 1)[0]
             l.add(x)
         if name not in self._markers:
             raise AttributeError("%r not a registered marker" % (name,))

changelog/1505.doc

@@ -0,0 +1 @@
+Introduce a dedicated section about conftest.py.

changelog/2658.doc

@@ -0,0 +1 @@
+Append example for pytest.param in the example/parametrize document.

changelog/2856.bugfix

@@ -0,0 +1 @@
+Strip whitespace from marker names when reading them from INI config.

changelog/2882.bugfix

@@ -0,0 +1 @@
+Show full context of doctest source in the pytest output, if the lineno of failed example in the docstring is < 9.

doc/en/assert.rst

@@ -209,8 +209,8 @@ the ``pytest_assertrepr_compare`` hook.
 .. autofunction:: _pytest.hookspec.pytest_assertrepr_compare
    :noindex:
 
-As an example consider adding the following hook in a conftest.py which
-provides an alternative explanation for ``Foo`` objects::
+As an example consider adding the following hook in a :ref:`conftest.py <conftest.py>` 
+file which provides an alternative explanation for ``Foo`` objects::
 
    # content of conftest.py
    from test_foocompare import Foo

doc/en/example/parametrize.rst

@@ -485,4 +485,54 @@ of our ``test_func1`` was skipped.  A few notes:
   values as well.
 
 
+Set marks or test ID for individual parametrized test
+--------------------------------------------------------------------
 
+Use ``pytest.param`` to apply marks or set test ID to individual parametrized test.
+For example::
+
+    # content of test_pytest_param_example.py
+    import pytest
+    @pytest.mark.parametrize('test_input,expected', [
+        ('3+5', 8),
+        pytest.param('1+7', 8,
+                     marks=pytest.mark.basic),
+        pytest.param('2+4', 6,
+                     marks=pytest.mark.basic,
+                     id='basic_2+4'),
+        pytest.param('6*9', 42,
+                     marks=[pytest.mark.basic, pytest.mark.xfail],
+                     id='basic_6*9'),
+    ])
+    def test_eval(test_input, expected):
+        assert eval(test_input) == expected
+    
+In this example, we have 4 parametrized tests. Except for the first test,
+we mark the rest three parametrized tests with the custom marker ``basic``,
+and for the fourth test we also use the built-in mark ``xfail`` to indicate this 
+test is expected to fail. For explicitness, we set test ids for some tests.
+
+Then run ``pytest`` with verbose mode and with only the ``basic`` marker::
+
+    pytest -v -m basic
+    ============================================ test session starts =============================================
+    platform linux -- Python 3.x.y, pytest-3.x.y, py-1.x.y, pluggy-0.x.y
+    rootdir: $REGENDOC_TMPDIR, inifile:
+    collected 4 items
+
+    test_pytest_param_example.py::test_eval[1+7-8] PASSED
+    test_pytest_param_example.py::test_eval[basic_2+4] PASSED
+    test_pytest_param_example.py::test_eval[basic_6*9] xfail
+    ========================================== short test summary info ===========================================
+    XFAIL test_pytest_param_example.py::test_eval[basic_6*9]
+
+    ============================================= 1 tests deselected =============================================
+
+As the result:
+
+- Four tests were collected
+- One test was deselected because it doesn't have the ``basic`` mark.
+- Three tests with the ``basic`` mark was selected.
+- The test ``test_eval[1+7-8]`` passed, but the name is autogenerated and confusing.
+- The test ``test_eval[basic_2+4]`` passed.
+- The test ``test_eval[basic_6*9]`` was expected to fail and did fail.

doc/en/example/pythoncollection.rst

@@ -175,21 +175,23 @@ You can always peek at the collection tree without running tests like this::
     
     ======= no tests ran in 0.12 seconds ========
 
-customizing test collection to find all .py files
----------------------------------------------------------
+.. _customizing-test-collection:
+
+Customizing test collection
+---------------------------
 
 .. regendoc:wipe
 
-You can easily instruct ``pytest`` to discover tests from every python file::
-
+You can easily instruct ``pytest`` to discover tests from every Python file::
 
     # content of pytest.ini
     [pytest]
     python_files = *.py
 
-However, many projects will have a ``setup.py`` which they don't want to be imported. Moreover, there may files only importable by a specific python version.
-For such cases you can dynamically define files to be ignored by listing
-them in a ``conftest.py`` file::
+However, many projects will have a ``setup.py`` which they don't want to be
+imported. Moreover, there may files only importable by a specific python
+version. For such cases you can dynamically define files to be ignored by
+listing them in a ``conftest.py`` file::
 
     # content of conftest.py
     import sys
@@ -198,7 +200,7 @@ them in a ``conftest.py`` file::
     if sys.version_info[0] > 2:
         collect_ignore.append("pkg/module_py2.py")
 
-And then if you have a module file like this::
+and then if you have a module file like this::
 
     # content of pkg/module_py2.py
     def test_only_on_python2():
@@ -207,13 +209,13 @@ And then if you have a module file like this::
         except Exception, e:
             pass
 
-and a setup.py dummy file like this::
+and a ``setup.py`` dummy file like this::
 
     # content of setup.py
     0/0  # will raise exception if imported
 
-then a pytest run on Python2 will find the one test and will leave out the
-setup.py file::
+If you run with a Python 2 interpreter then you will find the one test and will
+leave out the ``setup.py`` file::
 
     #$ pytest --collect-only
     ====== test session starts ======
@@ -225,8 +227,8 @@ setup.py file::
 
     ====== no tests ran in 0.04 seconds ======
 
-If you run with a Python3 interpreter both the one test and the setup.py file
-will be left out::
+If you run with a Python 3 interpreter both the one test and the ``setup.py``
+file will be left out::
 
     $ pytest --collect-only
     ======= test session starts ========

doc/en/fixture.rst

@@ -127,10 +127,39 @@ It's a prime example of `dependency injection`_ where fixture
 functions take the role of the *injector* and test functions are the
 *consumers* of fixture objects.
 
+.. _`conftest.py`:
+.. _`conftest`:
+
+``conftest.py``: sharing fixture functions
+------------------------------------------
+
+If during implementing your tests you realize that you
+want to use a fixture function from multiple test files you can move it
+to a ``conftest.py`` file.
+You don't need to import the fixture you want to use in a test, it
+automatically gets discovered by pytest. The discovery of
+fixture functions starts at test classes, then test modules, then
+``conftest.py`` files and finally builtin and third party plugins.
+
+You can also use the ``conftest.py`` file to implement 
+:ref:`local per-directory plugins <conftest.py plugins>`.
+
+Sharing test data
+-----------------
+
+If you want to make test data from files available to your tests, a good way
+to do this is by loading these data in a fixture for use by your tests.
+This makes use of the automatic caching mechanisms of pytest.
+
+Another good approach is by adding the data files in the ``tests`` folder.
+There are also community plugins available to help managing this aspect of 
+testing, e.g. `pytest-datadir <https://github.com/gabrielcnr/pytest-datadir>`__ 
+and `pytest-datafiles <https://pypi.python.org/pypi/pytest-datafiles>`__. 
+
 .. _smtpshared:
 
-Scope: Sharing a fixture across tests in a class, module or session
--------------------------------------------------------------------
+Scope: sharing a fixture instance across tests in a class, module or session
+----------------------------------------------------------------------------
 
 .. regendoc:wipe
 
@@ -878,17 +907,6 @@ All test methods in this TestClass will use the transaction fixture while
 other test classes or functions in the module will not use it unless
 they also add a ``transact`` reference.
 
-
-Shifting (visibility of) fixture functions
-----------------------------------------------------
-
-If during implementing your tests you realize that you
-want to use a fixture function from multiple test files you can move it
-to a :ref:`conftest.py <conftest.py>` file or even separately installable
-:ref:`plugins <plugins>` without changing test code.  The discovery of
-fixtures functions starts at test classes, then test modules, then
-``conftest.py`` files and finally builtin and third party plugins.
-
 Overriding fixtures on various levels
 -------------------------------------
 

doc/en/plugins.rst

@@ -91,7 +91,7 @@ environment you can type::
 
 and will get an extended test header which shows activated plugins
 and their names. It will also print local plugins aka
-:ref:`conftest.py <conftest>` files when they are loaded.
+:ref:`conftest.py <conftest.py plugins>` files when they are loaded.
 
 .. _`cmdunregister`:
 
@@ -152,4 +152,3 @@ in the `pytest repository <https://github.com/pytest-dev/pytest>`_.
     _pytest.terminal
     _pytest.tmpdir
     _pytest.unittest
-

doc/en/skipping.rst

@@ -3,7 +3,7 @@
 .. _skipping:
 
 Skip and xfail: dealing with tests that cannot succeed
-=====================================================================
+======================================================
 
 You can mark test functions that cannot be run on certain platforms
 or that you expect to fail so pytest can deal with them accordingly and
@@ -152,6 +152,16 @@ will be skipped if any of the skip conditions is true.
 .. _`whole class- or module level`: mark.html#scoped-marking
 
 
+Skipping files or directories
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Sometimes you may need to skip an entire file or directory, for example if the
+tests rely on Python version-specific features or contain code that you do not
+wish pytest to run. In this case, you must exclude the files and directories
+from collection. Refer to :ref:`customizing-test-collection` for more
+information.
+
+
 Skipping on a missing import dependency
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

doc/en/writing_plugins.rst

@@ -57,9 +57,7 @@ Plugin discovery order at tool startup
 
 .. _`pytest/plugin`: http://bitbucket.org/pytest-dev/pytest/src/tip/pytest/plugin/
 .. _`conftest.py plugins`:
-.. _`conftest.py`:
 .. _`localplugin`:
-.. _`conftest`:
 .. _`local conftest plugins`:
 
 conftest.py: local per-directory plugins

testing/test_assertrewrite.py

@@ -65,13 +65,18 @@ class TestAssertionRewrite(object):
     def test_place_initial_imports(self):
         s = """'Doc string'\nother = stuff"""
         m = rewrite(s)
-        assert isinstance(m.body[0], ast.Expr)
-        assert isinstance(m.body[0].value, ast.Str)
-        for imp in m.body[1:3]:
+        # Module docstrings in 3.7 are part of Module node, it's not in the body
+        # so we remove it so the following body items have the same indexes on
+        # all Python versions
+        if sys.version_info < (3, 7):
+            assert isinstance(m.body[0], ast.Expr)
+            assert isinstance(m.body[0].value, ast.Str)
+            del m.body[0]
+        for imp in m.body[0:2]:
             assert isinstance(imp, ast.Import)
             assert imp.lineno == 2
             assert imp.col_offset == 0
-        assert isinstance(m.body[3], ast.Assign)
+        assert isinstance(m.body[2], ast.Assign)
         s = """from __future__ import with_statement\nother_stuff"""
         m = rewrite(s)
         assert isinstance(m.body[0], ast.ImportFrom)
@@ -80,16 +85,29 @@ class TestAssertionRewrite(object):
             assert imp.lineno == 2
             assert imp.col_offset == 0
         assert isinstance(m.body[3], ast.Expr)
+        s = """'doc string'\nfrom __future__ import with_statement"""
+        m = rewrite(s)
+        if sys.version_info < (3, 7):
+            assert isinstance(m.body[0], ast.Expr)
+            assert isinstance(m.body[0].value, ast.Str)
+            del m.body[0]
+        assert isinstance(m.body[0], ast.ImportFrom)
+        for imp in m.body[1:3]:
+            assert isinstance(imp, ast.Import)
+            assert imp.lineno == 2
+            assert imp.col_offset == 0
         s = """'doc string'\nfrom __future__ import with_statement\nother"""
         m = rewrite(s)
-        assert isinstance(m.body[0], ast.Expr)
-        assert isinstance(m.body[0].value, ast.Str)
-        assert isinstance(m.body[1], ast.ImportFrom)
-        for imp in m.body[2:4]:
+        if sys.version_info < (3, 7):
+            assert isinstance(m.body[0], ast.Expr)
+            assert isinstance(m.body[0].value, ast.Str)
+            del m.body[0]
+        assert isinstance(m.body[0], ast.ImportFrom)
+        for imp in m.body[1:3]:
             assert isinstance(imp, ast.Import)
             assert imp.lineno == 3
             assert imp.col_offset == 0
-        assert isinstance(m.body[4], ast.Expr)
+        assert isinstance(m.body[3], ast.Expr)
         s = """from . import relative\nother_stuff"""
         m = rewrite(s)
         for imp in m.body[0:2]:
@@ -101,10 +119,14 @@ class TestAssertionRewrite(object):
     def test_dont_rewrite(self):
         s = """'PYTEST_DONT_REWRITE'\nassert 14"""
         m = rewrite(s)
-        assert len(m.body) == 2
-        assert isinstance(m.body[0].value, ast.Str)
-        assert isinstance(m.body[1], ast.Assert)
-        assert m.body[1].msg is None
+        if sys.version_info < (3, 7):
+            assert len(m.body) == 2
+            assert isinstance(m.body[0], ast.Expr)
+            assert isinstance(m.body[0].value, ast.Str)
+            del m.body[0]
+        else:
+            assert len(m.body) == 1
+        assert m.body[0].msg is None
 
     def test_name(self):
         def f():

testing/test_doctest.py

@@ -173,7 +173,7 @@ class TestDoctests(object):
             "*UNEXPECTED*ZeroDivision*",
         ])
 
-    def test_docstring_context_around_error(self, testdir):
+    def test_docstring_partial_context_around_error(self, testdir):
         """Test that we show some context before the actual line of a failing
         doctest.
         """
@@ -199,7 +199,7 @@ class TestDoctests(object):
         ''')
         result = testdir.runpytest('--doctest-modules')
         result.stdout.fnmatch_lines([
-            '*docstring_context_around_error*',
+            '*docstring_partial_context_around_error*',
             '005*text-line-3',
             '006*text-line-4',
             '013*text-line-11',
@@ -213,6 +213,32 @@ class TestDoctests(object):
         assert 'text-line-2' not in result.stdout.str()
         assert 'text-line-after' not in result.stdout.str()
 
+    def test_docstring_full_context_around_error(self, testdir):
+        """Test that we show the whole context before the actual line of a failing
+        doctest, provided that the context is up to 10 lines long.
+        """
+        testdir.makepyfile('''
+            def foo():
+                """
+                text-line-1
+                text-line-2
+
+                >>> 1 + 1
+                3
+                """
+        ''')
+        result = testdir.runpytest('--doctest-modules')
+        result.stdout.fnmatch_lines([
+            '*docstring_full_context_around_error*',
+            '003*text-line-1',
+            '004*text-line-2',
+            '006*>>> 1 + 1',
+            'Expected:',
+            '    3',
+            'Got:',
+            '    2',
+        ])
+
     def test_doctest_linedata_missing(self, testdir):
         testdir.tmpdir.join('hello.py').write(_pytest._code.Source("""
             class Fun(object):

testing/test_mark.py

@@ -169,6 +169,23 @@ def test_markers_option(testdir):
     ])
 
 
+def test_ini_markers_whitespace(testdir):
+    testdir.makeini("""
+        [pytest]
+        markers =
+            a1 : this is a whitespace marker
+    """)
+    testdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.a1
+        def test_markers():
+            assert True
+    """)
+    rec = testdir.inline_run("--strict", "-m", "a1")
+    rec.assertoutcome(passed=1)
+
+
 def test_markers_option_with_plugin_in_current_dir(testdir):
     testdir.makeconftest('pytest_plugins = "flip_flop"')
     testdir.makepyfile(flip_flop="""\

tox.ini

@@ -54,8 +54,9 @@ deps =
     mock
     nose
     hypothesis>=3.5.2
+changedir=testing
 commands =
-    pytest -n1 -ra {posargs:testing}
+    pytest -n1 -ra {posargs:.}
 
 [testenv:py36-xdist]
 deps = {[testenv:py27-xdist]deps}
@@ -81,10 +82,11 @@ deps =
     pytest-xdist>=1.13
     hypothesis>=3.5.2
 distribute = true
+changedir=testing
 setenv =
     PYTHONDONTWRITEBYTECODE=1
 commands =
-    pytest -n3 -ra {posargs:testing}
+    pytest -n3 -ra {posargs:.}
 
 [testenv:py27-trial]
 deps = twisted