Implement bp2build converter for rust_library

Test: go test
Bug: 297294749
Change-Id: I5400fe2c0fe2097b7a5810c736fbd1de4f35c6f7

bp2build/rust_library_conversion_test.go

@@ -0,0 +1,66 @@
+package bp2build
+
+import (
+	"android/soong/android"
+	"android/soong/rust"
+	"testing"
+)
+
+func runRustLibraryTestCase(t *testing.T, tc Bp2buildTestCase) {
+	t.Helper()
+	RunBp2BuildTestCase(t, registerRustLibraryModuleTypes, tc)
+}
+
+func registerRustLibraryModuleTypes(ctx android.RegistrationContext) {
+	ctx.RegisterModuleType("rust_library", rust.RustLibraryFactory)
+	ctx.RegisterModuleType("rust_library_host", rust.RustLibraryHostFactory)
+}
+
+func TestRustLibrary(t *testing.T) {
+	expectedAttrs := AttrNameToString{
+		"crate_name": `"foo"`,
+		"srcs": `[
+        "src/helper.rs",
+        "src/lib.rs",
+    ]`,
+		"crate_features": `["bah-enabled"]`,
+		"edition":        `"2021"`,
+		"rustc_flags":    `["--cfg=baz"]`,
+	}
+
+	runRustLibraryTestCase(t, Bp2buildTestCase{
+		Dir:       "external/rust/crates/foo",
+		Blueprint: "",
+		Filesystem: map[string]string{
+			"external/rust/crates/foo/src/lib.rs":    "",
+			"external/rust/crates/foo/src/helper.rs": "",
+			"external/rust/crates/foo/Android.bp": `
+rust_library {
+	name: "libfoo",
+	crate_name: "foo",
+    host_supported: true,
+	srcs: ["src/lib.rs"],
+	edition: "2021",
+	features: ["bah-enabled"],
+	cfgs: ["baz"],
+    bazel_module: { bp2build_available: true },
+}
+rust_library_host {
+    name: "libfoo_host",
+    crate_name: "foo",
+    srcs: ["src/lib.rs"],
+    edition: "2021",
+    features: ["bah-enabled"],
+    cfgs: ["baz"],
+    bazel_module: { bp2build_available: true },
+}
+`,
+		},
+		ExpectedBazelTargets: []string{
+			// TODO(b/290790800): Remove the restriction when rust toolchain for android is implemented
+			makeBazelTargetHostOrDevice("rust_library", "libfoo", expectedAttrs, android.HostSupported),
+			makeBazelTargetHostOrDevice("rust_library", "libfoo_host", expectedAttrs, android.HostSupported),
+		},
+	},
+	)
+}