Bp2Build converter for android_library_import and android_library.

Minor refactor of android_app converted to account for common attributes
between library and app.

Test: go test
Test: ../bazel/ci/bp2build.sh
Change-Id: I60b06eef6d2b9bc2d91f8b83522747ebbe76bbb6
Bug: 215230093
Bug: 215230095
diff --git a/bp2build/aar_conversion_test.go b/bp2build/aar_conversion_test.go
new file mode 100644
index 0000000..8e7c2b5
--- /dev/null
+++ b/bp2build/aar_conversion_test.go
@@ -0,0 +1,138 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package bp2build
+
+import (
+	"android/soong/android"
+	"android/soong/java"
+	"fmt"
+
+	"testing"
+)
+
+func TestConvertAndroidLibrary(t *testing.T) {
+	t.Helper()
+	RunBp2BuildTestCase(t, func(ctx android.RegistrationContext) {}, Bp2buildTestCase{
+		Description:                "Android Library - simple example",
+		ModuleTypeUnderTest:        "android_library",
+		ModuleTypeUnderTestFactory: java.AndroidLibraryFactory,
+		Filesystem: map[string]string{
+			"lib.java":                     "",
+			"arm.java":                     "",
+			"x86.java":                     "",
+			"res/res.png":                  "",
+			"manifest/AndroidManifest.xml": "",
+		},
+		Blueprint: simpleModuleDoNotConvertBp2build("android_library", "static_lib_dep") + `
+android_library {
+        name: "TestLib",
+        srcs: ["lib.java"],
+        arch: {
+			arm: {
+				srcs: ["arm.java"],
+			},
+			x86: {
+				srcs: ["x86.java"],
+			}
+		},
+        manifest: "manifest/AndroidManifest.xml",
+        static_libs: ["static_lib_dep"],
+        java_version: "7",
+}
+`,
+		ExpectedBazelTargets: []string{
+			makeBazelTarget(
+				"android_library",
+				"TestLib",
+				AttrNameToString{
+					"srcs": `["lib.java"] + select({
+        "//build/bazel/platforms/arch:arm": ["arm.java"],
+        "//build/bazel/platforms/arch:x86": ["x86.java"],
+        "//conditions:default": [],
+    })`,
+					"manifest":       `"manifest/AndroidManifest.xml"`,
+					"resource_files": `["res/res.png"]`,
+					"deps":           `[":static_lib_dep"]`,
+					"exports":        `[":static_lib_dep"]`,
+					"javacopts":      `["-source 1.7 -target 1.7"]`,
+				}),
+		}})
+}
+
+func TestConvertAndroidLibraryWithNoSources(t *testing.T) {
+	t.Helper()
+	RunBp2BuildTestCase(t, func(ctx android.RegistrationContext) {}, Bp2buildTestCase{
+		Description:                "Android Library - modules with deps must have sources",
+		ModuleTypeUnderTest:        "android_library",
+		ModuleTypeUnderTestFactory: java.AndroidLibraryFactory,
+		Filesystem: map[string]string{
+			"res/res.png":         "",
+			"AndroidManifest.xml": "",
+		},
+		Blueprint: simpleModuleDoNotConvertBp2build("android_library", "lib_dep") + `
+android_library {
+        name: "TestLib",
+        srcs: [],
+        manifest: "AndroidManifest.xml",
+        libs: ["lib_dep"],
+}
+`,
+		ExpectedErr:          fmt.Errorf("Module has direct dependencies but no sources. Bazel will not allow this."),
+		ExpectedBazelTargets: []string{},
+	})
+}
+
+func TestConvertAndroidLibraryImport(t *testing.T) {
+	t.Helper()
+	RunBp2BuildTestCase(
+		t,
+		func(ctx android.RegistrationContext) {
+			ctx.RegisterModuleType("android_library", java.AndroidLibraryFactory)
+		},
+		Bp2buildTestCase{
+			Description:                "Android Library Import",
+			ModuleTypeUnderTest:        "android_library_import",
+			ModuleTypeUnderTestFactory: java.AARImportFactory,
+			Filesystem: map[string]string{
+				"import.aar": "",
+			},
+			// Bazel's aar_import can only export *_import targets, so we expect
+			// only "static_import_dep" in exports, but both "static_lib_dep" and
+			// "static_import_dep" in deps
+			Blueprint: simpleModuleDoNotConvertBp2build("android_library", "static_lib_dep") +
+				simpleModuleDoNotConvertBp2build("android_library_import", "static_import_dep") + `
+android_library_import {
+        name: "TestImport",
+        aars: ["import.aar"],
+        static_libs: ["static_lib_dep", "static_import_dep"],
+}
+`,
+			ExpectedBazelTargets: []string{
+				makeBazelTarget(
+					"aar_import",
+					"TestImport",
+					AttrNameToString{
+						"aar": `"import.aar"`,
+						"deps": `[
+        ":static_lib_dep",
+        ":static_import_dep",
+    ]`,
+						"exports": `[":static_import_dep"]`,
+					},
+				),
+			},
+		},
+	)
+}