diff --git a/+gemini3d/+tests/TestAUnit.m b/+gemini3d/+tests/TestAUnit.m
index 9f024fe7..f0e1d5fe 100644
--- a/+gemini3d/+tests/TestAUnit.m
+++ b/+gemini3d/+tests/TestAUnit.m
@@ -63,9 +63,10 @@ function test_with_suffix(tc)
 if ~verLessThan("matlab", "9.9")
 % fileparts vectorized in R2020b
 tc.verifyEqual(gemini3d.fileio.with_suffix(["foo.h5", "bar.dat"], ".nc"), ["foo.nc", "bar.nc"])
-end
+
 tc.verifyEmpty(gemini3d.fileio.with_suffix(string.empty, ".nc"))
 end
+end
 
 function test_path_tail(tc)
 tc.verifyEqual(gemini3d.fileio.path_tail("a/b/c.h5"), "c.h5")
@@ -75,10 +76,10 @@ function test_path_tail(tc)
 if ~verLessThan("matlab", "9.9")
 % fileparts vectorized in R2020b
 tc.verifyEqual(gemini3d.fileio.path_tail(["c.h5", "a/b/c/"]), ["c.h5", "c"])
-end
 
 tc.verifyEmpty(gemini3d.fileio.path_tail(string.empty))
 end
+end
 
 
 function test_dateinc(tc)
diff --git a/test_gemini.m b/test_gemini.m
index dee14a7d..2c34d4f1 100644
--- a/test_gemini.m
+++ b/test_gemini.m
@@ -1,17 +1,33 @@
 import matlab.unittest.TestSuite
 import matlab.unittest.TestRunner
 import matlab.unittest.plugins.LoggingPlugin
+import matlab.unittest.plugins.CodeCoveragePlugin
+import matlab.unittest.plugins.codecoverage.CoberturaFormat
 
 runner = TestRunner.withTextOutput;
 p = LoggingPlugin.withVerbosity(matlab.unittest.Verbosity.Detailed,...
     'HideLevel',true,'HideTimestamp',true, 'Description', "");
 runner.addPlugin(p);
 
+isCI = getenv("CI") == "true";
+
+% coverage
+if isCI
+% future
+reportFile = 'CoverageResults.xml';
+reportFormat = CoberturaFormat(reportFile);
+% plugin = CodeCoveragePlugin.forPackage('gemini3d','Producing',reportFormat);
+% runner.addPlugin(plugin);
+else
+% works, but saving time
+% runner.addPlugin(CodeCoveragePlugin.forPackage('gemini3d'))
+end
+
 suite = TestSuite.fromPackage('gemini3d.tests');
 
-% under future consideration--need to manually start parallel pool for CI
+% need to manually start parallel pool for CI
 addons = matlab.addons.installedAddons();
-if (getenv("CI") ~= "true") && any(contains(addons.Name, 'Parallel Computing Toolbox'))
+if ~isCI && any(contains(addons.Name, 'Parallel Computing Toolbox'))
   results = runInParallel(runner, suite);
 else
   results = runner.run(suite);