From: Gua Guo <gua....@intel.com>

Windows command prompt have 8191 characters limitation,
enhance it to make command too long can be resloved.

Provide an example, if have too many cov files, it causes to run single
command over the 8191 characters limitation.
> OpenCppCoverage
>  --export_type binary:coverage.cov
>  --working_dir={workspace}Build
>  --input_coverage=AAA.cov
>  ...
>  --input_coverage=NNN.cov

The solution is passing many coverage files in single command line to
breaking it up into many command lines with one coverage file per
command line in order to prevent single line is over to 8191 characters.

- Command Line 1
> OpenCppCoverage
>  --export_type binary:coverage.cov
>  --working_dir={workspace}Build
>  --input_coverage=AAA.cov
>  --input_coverage=coverage.cov
...

- Command Line N
> OpenCppCoverage
>  --export_type. binary:coverage.cov
>  --working_dir={workspace}Build
>  --input_coverage=NNN.cov
>  --input_coverage=coverage.cov

Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Sean Brogan <sean.bro...@microsoft.com>
Cc: Michael Kubacki <mikub...@linux.microsoft.com>
Cc: Rebecca Cran <rebe...@bsdio.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Bob Feng <bob.c.f...@intel.com>
Cc: Yuwei Chen <yuwei.c...@intel.com>
Signed-off-by: Gua Guo <gua....@intel.com>
Reviewed-by: Michael Kubacki <mikub...@linux.microsoft.com>
---
 .../HostBasedUnitTestRunner.py                | 46 +++++++++++++++++--
 1 file changed, 41 insertions(+), 5 deletions(-)

diff --git 
a/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py 
b/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
index d993de9412..2e5c462cd2 100644
--- a/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
+++ b/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
@@ -205,28 +205,64 @@ class HostBasedUnitTestRunner(IUefiBuildPlugin):
         testList = glob.glob(os.path.join(buildOutputBase, "**","*Test*.exe"), 
recursive=True)
         workspace = thebuilder.env.GetValue("WORKSPACE")
         workspace = (workspace + os.sep) if workspace[-1] != os.sep else 
workspace
+        workspaceBuild = os.path.join(workspace, 'Build')
         # Generate coverage file
         coverageFile = ""
         for testFile in testList:
             ret = RunCmd("OpenCppCoverage", f"--source {workspace} 
--export_type binary:{testFile}.cov -- {testFile}")
-            coverageFile += " --input_coverage=" + testFile + ".cov"
+            if ret != 0:
+                logging.error("UnitTest Coverage: Failed to collect coverage 
data.")
+                return 1
+
+            coverageFile  = f" --input_coverage={testFile}.cov"
+            totalCoverageFile = os.path.join(buildOutputBase, 'coverage.cov')
+            if os.path.isfile(totalCoverageFile):
+                coverageFile += f" --input_coverage={totalCoverageFile}"
+            ret = RunCmd(
+                "OpenCppCoverage",
+                f"--export_type binary:{totalCoverageFile} " +
+                f"--working_dir={workspaceBuild} " +
+                f"{coverageFile}"
+                )
             if ret != 0:
                 logging.error("UnitTest Coverage: Failed to collect coverage 
data.")
                 return 1
 
         # Generate and XML file if requested.by each package
-        ret = RunCmd("OpenCppCoverage", f"--export_type 
cobertura:{os.path.join(buildOutputBase, 'coverage.xml')} 
--working_dir={workspace}Build {coverageFile}")
+        ret = RunCmd(
+            "OpenCppCoverage",
+            f"--export_type cobertura:{os.path.join(buildOutputBase, 
'coverage.xml')} " +
+            f"--working_dir={workspaceBuild} " +
+            f"--input_coverage={totalCoverageFile} "
+            )
         if ret != 0:
             logging.error("UnitTest Coverage: Failed to generate cobertura 
format xml in single package.")
             return 1
 
         # Generate total report XML file for all package
-        testCoverageList = glob.glob(os.path.join(workspace, "Build", 
"**","*Test*.exe.cov"), recursive=True)
+        testCoverageList = glob.glob(os.path.join(workspace, "Build", "**", 
"*Test*.exe.cov"), recursive=True)
         coverageFile = ""
+        totalCoverageFile = os.path.join(workspaceBuild, 'coverage.cov')
         for testCoverage in testCoverageList:
-            coverageFile += " --input_coverage=" + testCoverage
+            coverageFile  = f" --input_coverage={testCoverage}"
+            if os.path.isfile(totalCoverageFile):
+                coverageFile += f" --input_coverage={totalCoverageFile}"
+            ret = RunCmd(
+                "OpenCppCoverage",
+                f"--export_type binary:{totalCoverageFile} " +
+                f"--working_dir={workspaceBuild} " +
+                f"{coverageFile}"
+                )
+            if ret != 0:
+                logging.error("UnitTest Coverage: Failed to collect coverage 
data.")
+                return 1
 
-        ret = RunCmd("OpenCppCoverage", f"--export_type 
cobertura:{workspace}Build/coverage.xml --working_dir={workspace}Build 
{coverageFile}")
+        ret = RunCmd(
+            "OpenCppCoverage",
+            f"--export_type cobertura:{os.path.join(workspaceBuild, 
'coverage.xml')} " +
+            f"--working_dir={workspaceBuild} " +
+            f"--input_coverage={totalCoverageFile}"
+            )
         if ret != 0:
             logging.error("UnitTest Coverage: Failed to generate cobertura 
format xml.")
             return 1
-- 
2.39.2.windows.1



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