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Allow using only types in TEMPLATE_TEST_CASE_SIG. (#2995)

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Right now `TEMPLATE_TEST_CASE_SIG` fails to compile when the signature contains only types:

```
TEMPLATE_TEST_CASE_SIG(
  "TemplateTestSig: compiles with two type parameters",
  "[template][onlytypes]",
  ((typename U, typename V), U, V), (int,int)) {}
```

The trick is to resolve the ambiguity between the two overloads of
`get_wrapper` (`TypeList` and `Nttp`) by making one match more strongly.
We also need to allow `reg_test` to register more than one type.

Add unit tests.

Fixes #2680

---------

Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>
This commit is contained in:
Clement Courbet
2025-07-08 14:26:25 +02:00
committed by GitHub
parent 8dc9f1a124
commit 2de12cb05f
20 changed files with 182 additions and 32 deletions
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4
tests/SelfTest/Baselines/automake.sw.multi.approved.txt
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@@ -255,6 +255,10 @@
:test-result: PASS TemplateTest: vectors can be sized and resized - int
:test-result: PASS TemplateTest: vectors can be sized and resized - std::string
:test-result: PASS TemplateTest: vectors can be sized and resized - std::tuple<int,float>
:test-result: FAIL TemplateTestSig: compiles with a single int parameter - 1
:test-result: FAIL TemplateTestSig: compiles with a single int parameter - 3
:test-result: FAIL TemplateTestSig: compiles with a single int parameter - 6
:test-result: FAIL TemplateTestSig: compiles with two type parameters - int,int
:test-result: PASS TemplateTestSig: vectors can be sized and resized - (std::tuple<int, float>), 6
:test-result: PASS TemplateTestSig: vectors can be sized and resized - float,4
:test-result: PASS TemplateTestSig: vectors can be sized and resized - int,5