[llvm-branch-commits] [libcxx] [libc++][modules] Adds module testing. (PR #76246)

[Louis Dionne via llvm-branch-commits]

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@@ -52,6 +52,21 @@ def _executeScriptInternal(test, litConfig, commands):
     return (out, err, exitCode, timeoutInfo, parsedCommands)
 
 
+def _validateModuleDependencies(modules):
+    for m in modules:
+        if m not in ("std", "std.compat"):
+            raise RuntimeError(
+                f"Invalid module dependency '{m}', only 'std' and 'std.compat' are valid"
+            )
+
+
+def _getSubstitution(substitution, config):
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ldionne wrote:

Suggestion: Use `dsl._getSubstitution` instead. It's kind of an implementation detail of that other file, but whatever.

https://github.com/llvm/llvm-project/pull/76246