Add unit tests for djblets.log.views

Review Request #10833 — Created Jan. 18, 2020 and updated

Information

Djblets
release-1.0.x
2b03f4b...

Reviewers

Add a unit test for djblets.log.views.

Adding parse_timestamp() tests, def build_query_string() tests, iter_log_lines() tests, and get_log_filtersets() tests.

  • Added a unit test for djblets.log.views, which passes (along with all other tests except ERROR: Failure: ImproperlyConfigured (Error loading MySQLdb module: No module named MySQLdb)).
  • Running ./tests/runtests.py djblets.log.tests passes all tests.
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F401 'time' imported but unused

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Some important notes for the whole start-of-file area, including imports: Each file needs a docstring. Even unit test files. Something …

chipx86chipx86

While it's great practice to put docstrings in functions (and we highly encourage it), the exception is actually setUp() and …

chipx86chipx86

There's a ton of modules named "views," so the "views" prefix in here isn't really all that helpful. We tend …

chipx86chipx86

These variables can go inline in the call. Keeps the test nice and tidy, and makes it easier to copy/paste …

chipx86chipx86

When comparing against None, you'll want to use assertIsNone (or assertIsNotNone).

chipx86chipx86

We don't generally prefix with "mock," because at the end of the day it just becomes additional noise in the …

chipx86chipx86

A space snuck in at the end of this docstring. Same on some other ones.

chipx86chipx86

We want to always use single quotes instead of double quotes, unless the string itself contains single quotes (like "It's'a …

chipx86chipx86

We always like to expand dictionaries, so that it's easier to add to them without reformatting everything and easier to …

chipx86chipx86

You can nuke this blank line. Same with any others that introduce one. The only time we do want a …

chipx86chipx86

Good practice in Python when concatenating strings is to use a format string. It's faster than using +. So: '%s.log' …

chipx86chipx86

Here's some places we do want a blank line. Any time you are: Separating two blocks from each other (exception …

chipx86chipx86

Since the line_info[1] values are never going to change, you'll be better served with elif blocks.

chipx86chipx86

The u'...' string prefixes are old, and not something we want to use anymore. They imply a Unicode string, which …

chipx86chipx86

You'll want a blank line between these (separating a statement from a block).

chipx86chipx86

While commonly done in Python programs, it's actually dangerous for us to assign anything to _. That's because _ is …

chipx86chipx86

Looks like a blank line snuck in here.

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unicode(name) doesn't work in Python 3 because the unicode function got removed. Do we need the unicode thing at all? …

mike_conleymike_conley
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chipx86
  1. This is a great batch of new unit tests. Should definitely help us catch regressions in the future.

    There's some stuff I'll have you fix up. Mostly having to do with styles and standards, simplifying the number of lines of code in some tests, some gotchas you wouldn't otherwise know to look for, etc., but the core test logic looks sound.

  2. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
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    Some important notes for the whole start-of-file area, including imports:

    1. Each file needs a docstring. Even unit test files. Something like """Unit tests for djblets.log.views.""" is fine (it's not uncommon for this to match the class's docstring in these cases).
    2. The very first import must be from __future__ import unicode_literals, since that tells Python we want string compatibility between Python 2 and 3 (makes all strings Unicode by default). This avoids a LOT of problems.
    3. There's a bunch of conventions for imports that must be followed. See the coding style guide for information on this.
  3. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    While it's great practice to put docstrings in functions (and we highly encourage it), the exception is actually setUp() and tearDown() in unit tests.

    The reason basically just boils down to these functions being just part of the test infrastructure, and are so common that a docstring doesn't add anything. We're not generating codebase docs from them. We're not educating anyone with them. We'd just have a thousand variations on "Setting up for the test." So we don't really need to bother.

  4. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    There's a ton of modules named "views," so the "views" prefix in here isn't really all that helpful. We tend not to put module names in docstrings. You can instead just say "Testing parse_timestamp ...."

    This applies to the other ones below.

  5. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
     
     
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    These variables can go inline in the call. Keeps the test nice and tidy, and makes it easier to copy/paste these into a shell or something if we need to manually duplicate behavior.

    This will apply to a bunch of others below. Basically, any values that are only used once should just go inline in the call.

  6. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    When comparing against None, you'll want to use assertIsNone (or assertIsNotNone).

  7. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    We don't generally prefix with "mock," because at the end of the day it just becomes additional noise in the test. Most values are going to be mock/fake/dummy/test data, so we can just assume that to be the case.

    While you'll want to put these values directly into the call instead, if you were to pull them out (some later ones make sense since they're reused), I'd go with timestamp_format and timestamp_str.

  8. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    A space snuck in at the end of this docstring. Same on some other ones.

  9. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    We want to always use single quotes instead of double quotes, unless the string itself contains single quotes (like "It's'a me, Mario!").

  10. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    We always like to expand dictionaries, so that it's easier to add to them without reformatting everything and easier to scan for all the keys/values.

    Though that said, like above, let's just make these inline:

    self.assertEqual(
        build_query_string(request, {
            'hello': 'world',
        }),
        '?hello=world')
    
  11. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
     
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    You can nuke this blank line. Same with any others that introduce one.

    The only time we do want a blank line after a docstring is for classes. I know, that sounds inconsistent, but it's a Python standard.

  12. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    Good practice in Python when concatenating strings is to use a format string. It's faster than using +. So:

    '%s.log' % settings.LOGGING_NAME
    

    These apply to other tests as well.

  13. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    Here's some places we do want a blank line. Any time you are:

    1. Separating two blocks from each other (exception being something like if/elif/else or try/except/finally)
    2. Separating statement from a block (like a variable followed by an if or for)
    3. Separating a block from a statement

    Think of each for loop as its own paragraph. It'll make it easier to read.

  14. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
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    Since the line_info[1] values are never going to change, you'll be better served with elif blocks.

  15. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    The u'...' string prefixes are old, and not something we want to use anymore. They imply a Unicode string, which is the default on Python 3 and the default for any Python 2 files that do from __future__ import unicode_literals (which should be every single Python file we write).

  16. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
     
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    You'll want a blank line between these (separating a statement from a block).

  17. djblets/log/tests/test_log_view.py (Diff revision 6)
     
     
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    While commonly done in Python programs, it's actually dangerous for us to assign anything to _. That's because _ is used as an alias for ugettext, which is for string translations. It could potentially be overridden if someone's not careful, and it's also scanned by the program that generates the string translation files.

    Instead, just tack a [1] on the end of the statement or, maybe more correctly, name this value and then test it for correctness.

  18. djblets/log/views.py (Diff revision 6)
     
     
     
     
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    Looks like a blank line snuck in here.

  19. 
      
xiaole2
Review request changed

Commit:

-3d3eeeaf89212f8ad505a0ef9887d870c0221c36
+2e7340ef24aa1eda0f070dcb0941400729180b62

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xiaole2
mike_conley
  1. Thanks, Xiaole! Nice tests. Just one thing from what I can tell - see below.

  2. djblets/log/tests/test_log_view.py (Diff revision 8)
     
     
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    unicode(name) doesn't work in Python 3 because the unicode function got removed.

    Do we need the unicode thing at all? What happens if we just use:

    self.assertEqual(name, 'By date')
    

    ?

    Same goes for the other places where you use unicode() in this file.

    1. Do we need the unicode thing at all? - We don't need this thing. I have removed them and the tests all passed.
      self.assertEqual(name, 'By date') pass

  3. 
      
xiaole2
Review request changed

Change Summary:

removed unicode() and all tests pass

Commit:

-e88ef3ff6171c8df91636705916c36a3d1cc06a0
+2b03f4b44e507ce16e81cceeff03ae2e4d76049a

Diff:

Revision 9 (+382)

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