Add test spec provider to test modules.

Provider added for the following test modules in this change: art_cc_test, cc_benchmark, cc_fuzz, cc_test, cc_test_host, rust_test,and rust_test_host.

Bug: 296873595
Test: Manual test
Change-Id: I815680529bcbecacb3a2bdb8f3746053afdee48c
diff --git a/cc/Android.bp b/cc/Android.bp
index 8fa0fbe..77e96db 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -19,6 +19,7 @@
         "soong-multitree",
         "soong-snapshot",
         "soong-sysprop-bp2build",
+        "soong-testing",
         "soong-tradefed",
     ],
     srcs: [
diff --git a/cc/cc.go b/cc/cc.go
index 814a66c..e215438 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -24,6 +24,7 @@
 	"strconv"
 	"strings"
 
+	"android/soong/testing"
 	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
@@ -862,9 +863,10 @@
 	Properties       BaseProperties
 
 	// initialize before calling Init
-	hod       android.HostOrDeviceSupported
-	multilib  android.Multilib
-	bazelable bool
+	hod        android.HostOrDeviceSupported
+	multilib   android.Multilib
+	bazelable  bool
+	testModule bool
 
 	// Allowable SdkMemberTypes of this module type.
 	sdkMemberTypes []android.SdkMemberType
@@ -2329,6 +2331,9 @@
 			}
 		}
 	}
+	if c.testModule {
+		ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
+	}
 
 	c.maybeInstall(ctx, apexInfo)
 }
diff --git a/cc/fuzz.go b/cc/fuzz.go
index df9f21a..8fc4898 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -96,6 +96,7 @@
 // your device, or $ANDROID_PRODUCT_OUT/data/fuzz in your build tree.
 func LibFuzzFactory() android.Module {
 	module := NewFuzzer(android.HostAndDeviceSupported)
+	module.testModule = true
 	return module.Init()
 }
 
diff --git a/cc/test.go b/cc/test.go
index 5b778dc..28994e0 100644
--- a/cc/test.go
+++ b/cc/test.go
@@ -141,6 +141,7 @@
 func TestFactory() android.Module {
 	module := NewTest(android.HostAndDeviceSupported, true)
 	module.bazelHandler = &ccTestBazelHandler{module: module}
+	module.testModule = true
 	return module.Init()
 }
 
@@ -158,12 +159,14 @@
 // binary.
 func BenchmarkFactory() android.Module {
 	module := NewBenchmark(android.HostAndDeviceSupported)
+	module.testModule = true
 	return module.Init()
 }
 
 // cc_test_host compiles a test host binary.
 func TestHostFactory() android.Module {
 	module := NewTest(android.HostSupported, true)
+	module.testModule = true
 	return module.Init()
 }