diff --git a/rust/builder_test.go b/rust/builder_test.go
index 639f6d4..c093ac4 100644
--- a/rust/builder_test.go
+++ b/rust/builder_test.go
@@ -46,6 +46,9 @@
 }
 
 func TestCompilationOutputFiles(t *testing.T) {
+
+	// Note: Rustdoc output is produced for the PrimaryModule, so if the variant
+	// order changes, then it may be produced for a different variant.
 	ctx := testRust(t, `
 		rust_library {
 			name: "libfizz_buzz",
@@ -126,6 +129,16 @@
 			},
 		},
 		{
+			testName:   "rust_ffi rlib",
+			moduleName: "librust_ffi",
+			variant:    "android_arm64_armv8-a_rlib_rlib-std",
+			expectedFiles: []string{
+				"out/soong/.intermediates/librust_ffi/android_arm64_armv8-a_rlib_rlib-std/librust_ffi.rlib",
+				"out/soong/.intermediates/librust_ffi/android_arm64_armv8-a_rlib_rlib-std/librust_ffi.rlib.clippy",
+				"out/soong/.intermediates/librust_ffi/android_arm64_armv8-a_rlib_rlib-std/meta_lic",
+			},
+		},
+		{
 			testName:   "rust_ffi shared",
 			moduleName: "librust_ffi",
 			variant:    "android_arm64_armv8-a_shared",