add_test: Add COMMAND_EXPAND_LISTS option

Add a `COMMAND_EXPAND_LISTS` option to the `add_test` command to cause
`;`-separated lists produced by generator expressions to be expanded
into multiple arguments.  The `add_custom_command` command already
has such an option.

Fixes: #17284

1 files changed, 4 insertions, 0 deletions

diff --git a/Source/cmTestGenerator.h b/Source/cmTestGenerator.h
index 8b9cf78a15..7ac68eb76f 100644
--- a/Source/cmTestGenerator.h
+++ b/Source/cmTestGenerator.h
@@ -11,6 +11,7 @@
 #include <string>
 #include <vector>
 
+class cmGeneratorExpression;
 class cmLocalGenerator;
 class cmTest;
 
@@ -38,6 +39,9 @@ public:
 
 private:
   void GenerateInternalProperties(std::ostream& os);
+  std::vector<std::string> EvaluateCommandLineArguments(
+    const std::vector<std::string>& argv, cmGeneratorExpression& ge,
+    const std::string& config) const;
 
 protected:
   void GenerateScriptConfigs(std::ostream& os, Indent indent) override;