Add parameterized module: JUnit 5 @ParameterizedTest argument sources, display names, and two real anti-pattern failures

2026-10-03 21:50:52 +00:00
parent 8be1245951
commit ee75bfa792
45 changed files with 1179 additions and 0 deletions
@@ -0,0 +1,24 @@
+Captured from a real `junit-platform-console-standalone --details=tree` run against
+ValueSourceTest, compiled and executed for real.
+
+╷
+├─ JUnit Platform Suite ✔
+├─ JUnit Jupiter ✔
+│  └─ ValueSourceTest ✔
+│     └─ shouldIdentifyPalindromes(String) ✔
+│        ├─ "racecar" should be a palindrome ✔
+│        ├─ "radar" should be a palindrome ✔
+│        └─ "level" should be a palindrome ✔
+└─ JUnit Vintage ✔
+
+Test run finished after 171 ms
+[         3 tests successful      ]
+[         0 tests failed          ]
+
+name = "{0} should be a palindrome" is the whole trick: {0} is a positional reference to the
+single @ValueSource argument, and the console runner always quotes a String argument's own text
+when it substitutes it in -- which is why the output reads "racecar" should be a palindrome
+rather than requiring quotes inside the template itself. An earlier draft of this template used
+name = "''{0}'' should be a palindrome", which doubles up with the console's own quoting and
+renders as the much uglier '"racecar"' should be a palindrome -- fixed here before publishing by
+simply dropping the extra quote marks from the template.