1 files changed, 13 insertions, 0 deletions
diff --git a/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py b/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
index 0e013c5f1a..a384b55629 100644
--- a/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
+++ b/BaseTools/Plugin/HostBasedUnitTestRunner/HostBasedUnitTestRunner.py
@@ -16,6 +16,7 @@ import edk2toollib.windows.locate_tools as locate_tools
 from edk2toolext.environment import shell_environment
 from edk2toollib.utility_functions import RunCmd
 from edk2toollib.utility_functions import GetHostInfo
+from textwrap import dedent
 
 
 class HostBasedUnitTestRunner(IUefiBuildPlugin):
@@ -84,6 +85,18 @@ class HostBasedUnitTestRunner(IUefiBuildPlugin):
             else:
                 raise NotImplementedError("Unsupported Operating System")
 
+            if not testList:
+                logging.warning(dedent("""
+                    UnitTest Coverage:
+                      No unit tests discovered. Test coverage will not be generated.
+
+                      Prevent this message by:
+                      1. Adding host-based unit tests to this package
+                      2. Ensuring tests have the word "Test" in their name
+                      3. Disabling HostUnitTestCompilerPlugin in the package CI YAML file
+                    """).strip())
+                return 0
+
             for test in testList:
                 # Configure output name if test uses cmocka.
                 shell_env.set_shell_var(