Enable an apex to include a java_import.

With the addition of the compile_dex property to the
java_import module it becomes possible to include a
java_import module in an apex. This change allows the
dependency and adds a test.

Bug: 177228901
Test: m nothing
Test: new TestApexWithJavaImport
Change-Id: I9336dade1857109e2fd21f7d57e1dc4abc4a402c

apex/apex.go

@@ -1428,6 +1428,7 @@ type javaModule interface {
 }
 
 var _ javaModule = (*java.Library)(nil)
+var _ javaModule = (*java.Import)(nil)
 var _ javaModule = (*java.SdkLibrary)(nil)
 var _ javaModule = (*java.DexImport)(nil)
 var _ javaModule = (*java.SdkLibraryImport)(nil)
@@ -1629,7 +1630,7 @@ func (a *apexBundle) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 				}
 			case javaLibTag:
 				switch child.(type) {
-				case *java.Library, *java.SdkLibrary, *java.DexImport, *java.SdkLibraryImport:
+				case *java.Library, *java.SdkLibrary, *java.DexImport, *java.SdkLibraryImport, *java.Import:
 					af := apexFileForJavaModule(ctx, child.(javaModule))
 					if !af.ok() {
 						ctx.PropertyErrorf("java_libs", "%q is not configured to be compiled into dex", depName)

apex/apex_test.go

@@ -4515,6 +4515,34 @@ func TestErrorsIfDepsAreNotEnabled(t *testing.T) {
 	`)
 }
 
+func TestApexWithJavaImport(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			java_libs: ["myjavaimport"],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_import {
+			name: "myjavaimport",
+			apex_available: ["myapex"],
+			jars: ["my.jar"],
+			compile_dex: true,
+		}
+	`)
+
+	module := ctx.ModuleForTests("myapex", "android_common_myapex_image")
+	apexRule := module.Rule("apexRule")
+	copyCmds := apexRule.Args["copy_commands"]
+	ensureContains(t, copyCmds, "image.apex/javalib/myjavaimport.jar")
+}
+
 func TestApexWithApps(t *testing.T) {
 	ctx, _ := testApex(t, `
 		apex {

java/java.go

@@ -2831,6 +2831,10 @@ func (a *Import) JacocoReportClassesFile() android.Path {
 	return nil
 }
 
+func (j *Import) LintDepSets() LintDepSets {
+	return LintDepSets{}
+}
+
 func (j *Import) DepsMutator(ctx android.BottomUpMutatorContext) {
 	ctx.AddVariationDependencies(nil, libTag, j.properties.Libs...)