Prevent using android_app_import in instrumentation_for property

Previously, referencing a prebuilt android_app_import in an
android_test's instrumentation_for property instead of the source
android_app module (e.g. because the prebuilt is preferred) could
result in compilation errors if the android_test sources depended on
classes from the app. That is because while the android_app provides a
classes jar file to be added to the android_test's classpath the
android_app_import does not.

This change reports that situation as an error.

Bug: 207128192
Test: m nothing
Change-Id: I26ea90e7a3f57707fc0c094e0d8b8dc9a9e135ac

java/app_test.go

@@ -2168,10 +2168,33 @@ func TestAndroidTest_FixTestConfig(t *testing.T) {
 				t.Errorf("test_config_fixer was not expected to run, but did: %q", params.RuleParams.Command)
 			}
 		}
-
 	}
 }
 
+func TestInstrumentationTargetPrebuilt(t *testing.T) {
+	bp := `
+		android_app_import {
+			name: "foo",
+			apk: "foo.apk",
+			presigned: true,
+		}
+
+		android_test {
+			name: "bar",
+			srcs: ["a.java"],
+			instrumentation_for: "foo",
+			sdk_version: "current",
+		}
+		`
+
+	android.GroupFixturePreparers(
+		PrepareForTestWithJavaDefaultModules,
+	).ExtendWithErrorHandler(
+		android.FixtureExpectsAtLeastOneErrorMatchingPattern(
+			"instrumentation_for: dependency \"foo\" of type \"android_app_import\" does not provide JavaInfo so is unsuitable for use with this property")).
+		RunTestWithBp(t, bp)
+}
+
 func TestStl(t *testing.T) {
 	ctx, _ := testJava(t, cc.GatherRequiredDepsForTest(android.Android)+`
 		cc_library {

java/base.go

@@ -1936,6 +1936,9 @@ func (j *Module) collectDeps(ctx android.ModuleContext) deps {
 				sm := module.(SystemModulesProvider)
 				outputDir, outputDeps := sm.OutputDirAndDeps()
 				deps.systemModules = &systemModules{outputDir, outputDeps}
+
+			case instrumentationForTag:
+				ctx.PropertyErrorf("instrumentation_for", "dependency %q of type %q does not provide JavaInfo so is unsuitable for use with this property", ctx.OtherModuleName(module), ctx.OtherModuleType(module))
 			}
 		}