Sleepy Test
^^^^^
**Definition:**

* Developers introduce this smell when they need to pause execution of statements in a test method for a certain duration (i.e., simulate an external event) and then continuing with execution. Explicitly causing a thread to sleep can lead to unexpected results as the processing time for a task differs when executed in various environments and configurations.


**Code Example:**

.. code-block:: java

    public void testEdictExternSearch() throws Exception {
        final Intent i = new Intent(getInstrumentation().getContext(), ResultActivity.class);
        i.setAction(ResultActivity.EDICT_ACTION_INTERCEPT);
        i.putExtra(ResultActivity.EDICT_INTENTKEY_KANJIS, "空白");
        tester.startActivity(i);
        assertTrue(tester.getText(R.id.textSelectedDictionary).contains("Default"));
        final ListView lv = getActivity().getListView();
        assertEquals(1, lv.getCount());
        DictEntry entry = (DictEntry) lv.getItemAtPosition(0);
        assertEquals("Searching", entry.english);
        Thread.sleep(500);
        final Intent i2 = getStartedActivityIntent();
        final List result = (List) i2.getSerializableExtra(ResultActivity.INTENTKEY_RESULT_LIST);
        entry = result.get(0);
        assertEquals("(adj-na,n,adj-no) blank space/vacuum/space/null (NUL)/(P)", entry.english);
        assertEquals("空白", entry.getJapanese());
        assertEquals("くうはく", entry.reading);
        assertEquals(1, result.size());
    }

**References:**

.. admonition:: Quality attributes

    * :octicon:`file-code;1em` -  Code Example
    * :octicon:`comment-discussion;1em` -  Cause and Effect
    * :octicon:`graph;1em` -  Frequency
    * :octicon:`sync;1em` -  Refactoring

* `An Exploratory Study on the Refactoring of Unit Test Files in Android Applications <https://dl.acm.org/doi/10.1145/3387940.3392189>`_ :octicon:`comment-discussion;1em` :octicon:`sync;1em`
* `Automatic Identification of High-Impact Bug Report by Product and Test Code Quality <https://huang.zj.cn/pdf/J13.pdf>`_
* `Automatic generation of smell-free unit tests <https://repositorio.ul.pt/handle/10451/56819>`_ :octicon:`comment-discussion;1em`
* `Characterizing High-Quality Test Methods: A First Empirical Study <https://ieeexplore.ieee.org/document/9796158/>`_ :octicon:`graph;1em`
* `Handling Test Smells in Python: Results from a Mixed-Method Study <https://dl.acm.org/doi/10.1145/3474624.3477066>`_
* `Investigating Severity Thresholds for Test Smells <https://dl.acm.org/doi/abs/10.1145/3379597.3387453>`_ :octicon:`comment-discussion;1em`
* `Investigating Test Smells in JavaScript Test Code <https://dl.acm.org/doi/10.1145/3482909.3482915>`_ :octicon:`graph;1em`
* `On the Distribution of "Simple Stupid Bugs" in Unit Test Files: An Exploratory Study <https://ieeexplore.ieee.org/document/9463091>`_
* `On the diffusion of test smells and their relationship with test code quality of Java projects <https://onlinelibrary.wiley.com/doi/abs/10.1002/smr.2532>`_ :octicon:`graph;1em`
* `On the distribution of test smells in open source Android applications: an exploratory study <https://dl.acm.org/doi/10.5555/3370272.3370293>`_ :octicon:`file-code;1em` :octicon:`graph;1em`
* `On the influence of Test Smells on Test Coverage <https://dl.acm.org/doi/10.1145/3350768.3350775>`_
* `On the test smells detection: an empirical study on the jnose test accuracy <https://sol.sbc.org.br/journals/index.php/jserd/article/view/1893>`_ :octicon:`graph;1em`
* `On the use of test smells for prediction of flaky tests <https://dl.acm.org/doi/abs/10.1145/3482909.3482916>`_ :octicon:`comment-discussion;1em` :octicon:`graph;1em`
* `PyNose: A Test Smell Detector For Python <https://ieeexplore.ieee.org/document/9678615/>`_ :octicon:`comment-discussion;1em` :octicon:`graph;1em`
* `Pytest-Smell: a smell detection tool for Python unit tests <https://dl.acm.org/doi/10.1145/3533767.3543290>`_ :octicon:`graph;1em`
* `Software Unit Test Smells <https://testsmells.org/>`_ :octicon:`file-code;1em`
* `TEMPY: Test Smell Detector for Python <https://dl.acm.org/doi/10.1145/3555228.3555280>`_ :octicon:`graph;1em`
* `Test Smell Detection Tools: A Systematic Mapping Study <https://dl.acm.org/doi/10.1145/3463274.3463335>`_
* `The secret life of test smells-an empirical study on test smell evolution and maintenance <https://link.springer.com/article/10.1007/s10664-021-09969-1>`_ :octicon:`graph;1em`
* `Understanding practitioners’ strategies to handle test smells: a multi-method study <https://dl.acm.org/doi/10.1145/3474624.3474639>`_ :octicon:`comment-discussion;1em` :octicon:`sync;1em`
* `What the Smell? An Empirical Investigation on the Distribution and Severity of Test Smells in Open Source Android Applications <https://www.proquest.com/openview/17433ac63caf619abb410e441e6557f0/1?pq-origsite=gscholar&cbl=18750>`_ :octicon:`file-code;1em` :octicon:`graph;1em`
* `tsDetect: an open source test smells detection tool <https://dl.acm.org/doi/10.1145/3368089.3417921>`_