[devscripts] `run_tests`: Create Python script (#8720)

[yt-dlp.git] / CONTRIBUTING.md

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c472f32514030967a265fed19cd23985365d406e..248917bf55b9d03c19f928233d310bef313f5cd8 100644 (file)
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -140,12 +140,9 @@ # DEVELOPER INSTRUCTIONS
 
     python -m yt_dlp
 
-To run the test, simply invoke your favorite test runner, or execute a test file directly; any of the following work:
+To run all the available core tests, use:
 
-    python -m unittest discover
-    python test/test_download.py
-    nosetests
-    pytest
+    python devscripts/run_tests.py
 
 See item 6 of [new extractor tutorial](#adding-support-for-a-new-site) for how to run extractor specific test cases.
 
@@ -187,15 +184,21 @@ ## Adding support for a new site
             'url': 'https://yourextractor.com/watch/42',
             'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
             'info_dict': {
+                # For videos, only the 'id' and 'ext' fields are required to RUN the test:
                 'id': '42',
                 'ext': 'mp4',
-                'title': 'Video title goes here',
-                'thumbnail': r're:^https?://.*\.jpg$',
-                # TODO more properties, either as:
-                # * A value
-                # * MD5 checksum; start the string with md5:
-                # * A regular expression; start the string with re:
-                # * Any Python type, e.g. int or float
+                # Then if the test run fails, it will output the missing/incorrect fields.
+                # Properties can be added as:
+                # * A value, e.g.
+                #     'title': 'Video title goes here',
+                # * MD5 checksum; start the string with 'md5:', e.g.
+                #     'description': 'md5:098f6bcd4621d373cade4e832627b4f6',
+                # * A regular expression; start the string with 're:', e.g.
+                #     'thumbnail': r're:^https?://.*\.jpg$',
+                # * A count of elements in a list; start the string with 'count:', e.g.
+                #     'tags': 'count:10',
+                # * Any Python type, e.g.
+                #     'view_count': int,
             }
         }]
 
@@ -215,8 +218,8 @@ ## Adding support for a new site
             }
     ```
 1. Add an import in [`yt_dlp/extractor/_extractors.py`](yt_dlp/extractor/_extractors.py). Note that the class name must end with `IE`.
-1. Run `python test/test_download.py TestDownload.test_YourExtractor` (note that `YourExtractor` doesn't end with `IE`). This *should fail* at first, but you can continually re-run it until you're done. If you decide to add more than one test, the tests will then be named `TestDownload.test_YourExtractor`, `TestDownload.test_YourExtractor_1`, `TestDownload.test_YourExtractor_2`, etc. Note that tests with `only_matching` key in test's dict are not counted in. You can also run all the tests in one go with `TestDownload.test_YourExtractor_all`
-1. Make sure you have atleast one test for your extractor. Even if all videos covered by the extractor are expected to be inaccessible for automated testing, tests should still be added with a `skip` parameter indicating why the particular test is disabled from running.
+1. Run `python devscripts/run_tests.py YourExtractor`. This *may fail* at first, but you can continually re-run it until you're done. Upon failure, it will output the missing fields and/or correct values which you can copy. If you decide to add more than one test, the tests will then be named `YourExtractor`, `YourExtractor_1`, `YourExtractor_2`, etc. Note that tests with an `only_matching` key in the test's dict are not included in the count. You can also run all the tests in one go with `YourExtractor_all`
+1. Make sure you have at least one test for your extractor. Even if all videos covered by the extractor are expected to be inaccessible for automated testing, tests should still be added with a `skip` parameter indicating why the particular test is disabled from running.
 1. Have a look at [`yt_dlp/extractor/common.py`](yt_dlp/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should and may return](yt_dlp/extractor/common.py#L119-L440). Add tests and code for as many as you want.
 1. Make sure your code follows [yt-dlp coding conventions](#yt-dlp-coding-conventions) and check the code with [flake8](https://flake8.pycqa.org/en/latest/index.html#quickstart):