Merged in rouge8/pytest/issue499 (pull request #157)
fix issue499: document selecting tests by node ID
This commit is contained in:
Floris Bruynooghe
commit
d74f852fd6
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@ -21,6 +21,9 @@ You can "mark" a test function with custom metadata like this::
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pass
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def test_another():
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pass
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class TestClass:
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def test_method(self):
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pass
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.. versionadded:: 2.2
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@ -29,25 +32,82 @@ You can then restrict a test run to only run tests marked with ``webtest``::
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$ py.test -v -m webtest
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 3 items
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collecting ... collected 4 items
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test_server.py:3: test_send_http PASSED
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=================== 2 tests deselected by "-m 'webtest'" ===================
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================== 1 passed, 2 deselected in 0.01 seconds ==================
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=================== 3 tests deselected by "-m 'webtest'" ===================
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================== 1 passed, 3 deselected in 0.01 seconds ==================
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Or the inverse, running all tests except the webtest ones::
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$ py.test -v -m "not webtest"
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 3 items
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collecting ... collected 4 items
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test_server.py:6: test_something_quick PASSED
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test_server.py:8: test_another PASSED
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test_server.py:11: TestClass.test_method PASSED
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================= 1 tests deselected by "-m 'not webtest'" =================
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================== 2 passed, 1 deselected in 0.01 seconds ==================
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================== 3 passed, 1 deselected in 0.01 seconds ==================
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Selecing tests based on their node ID
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-------------------------------------
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You can provide one or more :ref:`node IDs <node-id>` as positional
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arguments to select only specified tests. This makes it easy to select
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tests based on their module, class, method, or function name::
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$ py.test -v test_server.py::TestClass::test_method
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 4 items
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test_server.py:11: TestClass.test_method PASSED
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========================= 1 passed in 0.01 seconds =========================
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You can also select on the class::
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$ py.test -v test_server.py::TestClass
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 4 items
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test_server.py:11: TestClass.test_method PASSED
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========================= 1 passed in 0.01 seconds =========================
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Or select multiple nodes::
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$ py.test -v test_server.py::TestClass test_server.py::test_send_http
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 8 items
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test_server.py:11: TestClass.test_method PASSED
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test_server.py:3: test_send_http PASSED
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========================= 2 passed in 0.01 seconds =========================
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.. _node-id:
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.. note::
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Node IDs are of the form ``module.py::class::method`` or
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``module.py::function``. Node IDs control which tests are
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collected, so ``module.py::class`` will select all test methods
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on the class. Nodes are also created for each parameter of a
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parametrized fixture or test, so selecting a parametrized test
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must include the parameter value, e.g.
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``module.py::function[param]``.
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Node IDs for failing tests are displayed in the test summary info
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when running py.test with the ``-rf`` option. You can also
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construct Node IDs from the output of ``py.test --collectonly``.
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Using ``-k expr`` to select tests based on their name
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-------------------------------------------------------
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@ -62,38 +122,39 @@ select tests based on their names::
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$ py.test -v -k http # running with the above defined example module
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 3 items
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collecting ... collected 4 items
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test_server.py:3: test_send_http PASSED
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====================== 2 tests deselected by '-khttp' ======================
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================== 1 passed, 2 deselected in 0.01 seconds ==================
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====================== 3 tests deselected by '-khttp' ======================
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================== 1 passed, 3 deselected in 0.01 seconds ==================
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And you can also run all tests except the ones that match the keyword::
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$ py.test -k "not send_http" -v
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 3 items
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collecting ... collected 4 items
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test_server.py:6: test_something_quick PASSED
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test_server.py:8: test_another PASSED
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test_server.py:11: TestClass.test_method PASSED
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================= 1 tests deselected by '-knot send_http' ==================
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================== 2 passed, 1 deselected in 0.01 seconds ==================
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================== 3 passed, 1 deselected in 0.01 seconds ==================
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Or to select "http" and "quick" tests::
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$ py.test -k "http or quick" -v
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=========================== test session starts ============================
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platform linux2 -- Python 2.7.3 -- py-1.4.20 -- pytest-2.5.2 -- /home/hpk/p/pytest/.tox/regen/bin/python
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collecting ... collected 3 items
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collecting ... collected 4 items
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test_server.py:3: test_send_http PASSED
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test_server.py:6: test_something_quick PASSED
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================= 1 tests deselected by '-khttp or quick' ==================
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================== 2 passed, 1 deselected in 0.01 seconds ==================
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================= 2 tests deselected by '-khttp or quick' ==================
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================== 2 passed, 2 deselected in 0.01 seconds ==================
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.. note::
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@ -49,6 +49,9 @@ Several test run options::
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# the "string expression", e.g. "MyClass and not method"
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# will select TestMyClass.test_something
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# but not TestMyClass.test_method_simple
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py.test test_mod.py::test_func # only run tests that match the "node ID",
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# e.g "test_mod.py::test_func" will select
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# only test_func in test_mod.py
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Import 'pkg' and use its filesystem location to find and run tests::
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