ctest: add option for output truncation

Add `--test-output-truncation` to `ctest`. This option can be used to
customize which part of the test output is being truncated. Currently
supported values are `tail`, `middle` and `head`.

Also add equivalent `CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variable.

Fixes: #23206

1 files changed, 5 insertions, 0 deletions

diff --git a/Source/cmCMakePresetsGraph.cxx b/Source/cmCMakePresetsGraph.cxx
index 705e2b022e..39bb326aae 100644
--- a/Source/cmCMakePresetsGraph.cxx
+++ b/Source/cmCMakePresetsGraph.cxx
@@ -773,6 +773,8 @@ cmCMakePresetsGraph::TestPreset::VisitPresetInherit(
                            parentOutput.MaxPassedTestOutputSize);
       InheritOptionalValue(output.MaxFailedTestOutputSize,
                            parentOutput.MaxFailedTestOutputSize);
+      InheritOptionalValue(output.TestOutputTruncation,
+                           parentOutput.TestOutputTruncation);
       InheritOptionalValue(output.MaxTestNameWidth,
                            parentOutput.MaxTestNameWidth);
     } else {
@@ -1027,6 +1029,9 @@ const char* cmCMakePresetsGraph::ResultToString(ReadFileResult result)
              "support.";
     case ReadFileResult::CYCLIC_INCLUDE:
       return "Cyclic include among preset files";
+    case ReadFileResult::TEST_OUTPUT_TRUNCATION_UNSUPPORTED:
+      return "File version must be 5 or higher for testOutputTruncation "
+             "preset support.";
   }
 
   return "Unknown error";