CTest: Fix MUMPS coverage parsing and test

Fix the MUMPS coverage parser:

* Account for tabs after entry points

* Stop double incrementing lines that have explicit calls to the 0 line

* If a line has been previously marked as non executable, but then
  contains a count, increment it an extra one to push it back into
  the executable code set.

Add a custom routine and corresponding coverage files in the test case.
This file is smaller and has cmcov/mcov files that have data for only
that routine.

1 files changed, 13 insertions, 1 deletions

diff --git a/Source/CTest/cmParseCacheCoverage.cxx b/Source/CTest/cmParseCacheCoverage.cxx
index 85e07ae..d17f169 100644
--- a/Source/CTest/cmParseCacheCoverage.cxx
+++ b/Source/CTest/cmParseCacheCoverage.cxx
@@ -215,7 +215,19 @@ bool cmParseCacheCoverage::ReadCMCovFile(const char* file)
       {
       coverageVector.push_back(-1);
       }
-    coverageVector[linenumber] += count;
+    // Accounts for lines that were previously marked
+    // as non-executable code (-1). if the parser comes back with
+    // a non-zero count, increase the count by 1 to push the line
+    // into the executable code set in addition to the count found.
+    if(coverageVector[linenumber] == -1 &&
+        count > 0)
+      {
+        coverageVector[linenumber] += count+1;
+      }
+    else
+      {
+        coverageVector[linenumber] += count;
+      }
     }
   return true;
 }