Do not convert non-unit tests.

Test: CI
Change-Id: Iab9c134718351187859f34a26bd3a2aa66e009d5
diff --git a/cc/test.go b/cc/test.go
index 7a6cf1b..8c63dc6 100644
--- a/cc/test.go
+++ b/cc/test.go
@@ -25,6 +25,7 @@
 	"android/soong/bazel"
 	"android/soong/bazel/cquery"
 	"android/soong/tradefed"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 )
 
 // TestLinkerProperties properties to be registered via the linker
@@ -718,6 +719,13 @@
 				combinedData.Append(android.BazelLabelForModuleDeps(ctx, p.Data_libs))
 				data.SetSelectValue(axis, config, combinedData)
 				tags.SetSelectValue(axis, config, p.Test_options.Tags)
+
+				// TODO: b/300117121 - handle bp2build conversion of non-unit tests
+				// default to true to only handle non-nil falses
+				if !BoolDefault(p.Test_options.Unit_test, true) {
+					ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_PROPERTY_UNSUPPORTED, "Host unit_test = false")
+					return
+				}
 			}
 		}
 	}