Search for a native extension for the host architecture

tests/standalone/io/test_extension_test.dart

Index: tests/standalone/io/test_extension_test.dart
diff --git a/tests/standalone/io/test_extension_test.dart b/tests/standalone/io/test_extension_test.dart
index 0f032339949b66929e01393eb0a33c67a3b1985f..40d768e2ba6cbda59ee3ebdf81857f52757ade67 100644
--- a/tests/standalone/io/test_extension_test.dart
+++ b/tests/standalone/io/test_extension_test.dart
@@ -12,6 +12,7 @@ import 'dart:isolate';
 
 Future copyFileToDirectory(String file, String directory) {
   switch (Platform.operatingSystem) {
+    case 'android':
     case 'linux':
     case 'macos':
       return Process.run('cp', [file, directory]);
@@ -22,30 +23,67 @@ Future copyFileToDirectory(String file, String directory) {
   }
 }
 
-String getExtensionPath(String buildDirectory) {
+// Returns a list containing the source file name in the first element and the
+// target file name in the second element.
+List<String> getExtensionNames(String arch) {
   switch (Platform.operatingSystem) {
+    case 'android':
     case 'linux':
-      return join(buildDirectory, 'lib.target', 'libtest_extension.so');
+      return ['libtest_extension.so', 'libtest_extension$arch.so'];
     case 'macos':
-      return join(buildDirectory, 'libtest_extension.dylib');
+      return ['libtest_extension.dylib', 'libtest_extension$arch.dylib'];
     case 'windows':
-      return join(buildDirectory, 'test_extension.dll');
+      return ['test_extension.dll','test_extension$arch.dll'];
     default:
       Expect.fail('Unknown operating system ${Platform.operatingSystem}');
   }
 }
 
-void main() {
+String getExtensionPath(String buildDirectory, String filename) {
+  switch (Platform.operatingSystem) {
+    case 'android':
+    case 'linux':
+      return join(buildDirectory, 'lib.target', filename);
+    case 'macos':
+    case 'windows':
+      return join(buildDirectory, filename);
+    default:
+      Expect.fail('Unknown operating system ${Platform.operatingSystem}');
+  }
+}
+
+String getArchFromBuildDir(String buildDirectory) {
+  if (buildDirectory.endsWith('SIMARM')) return '';
+  if (buildDirectory.endsWith('SIMARM64')) return '';
+  if (buildDirectory.endsWith('SIMDBC')) return '';
+  if (buildDirectory.endsWith('SIMMIPS')) return '';
+  if (buildDirectory.endsWith('ARM')) return '-arm';
+  if (buildDirectory.endsWith('ARM64')) return '-arm64';
+  if (buildDirectory.endsWith('IA32')) return '-ia32';
+  if (buildDirectory.endsWith('MIPS')) return '-mips';
+  if (buildDirectory.endsWith('X64')) return '-x64';
+  return 'unknown';
+}
+
+Future testExtension(bool withArchSuffix) {
   String scriptDirectory = dirname(Platform.script.toFilePath());
   String buildDirectory = dirname(Platform.executable);
   Directory tempDirectory =
       Directory.systemTemp.createTempSync('dart_test_extension');
   String testDirectory = tempDirectory.path;
 
+  List<String> fileNames;
+  if (withArchSuffix) {
+    String arch = getArchFromBuildDir(buildDirectory);
+    fileNames = getExtensionNames(arch);
+  } else {
+    fileNames = getExtensionNames('');
+  }
+
   // Copy test_extension shared library, test_extension.dart and
   // test_extension_tester.dart to the temporary test directory.
-  copyFileToDirectory(getExtensionPath(buildDirectory),
-                      testDirectory).then((_) {
+  return copyFileToDirectory(getExtensionPath(buildDirectory, fileNames[0]),
+                      join(testDirectory, fileNames[1])).then((_) {
     var extensionDartFile = join(scriptDirectory, 'test_extension.dart');
     return copyFileToDirectory(extensionDartFile, testDirectory);
   }).then((_) {
@@ -69,3 +107,16 @@ void main() {
     tempDirectory.deleteSync(recursive: true);
   });
 }
+
+Future testWithArchSuffix() {
+  return testExtension(true);
+}
+
+Future testWithoutArchSuffix() {
+  return testExtension(false);
+}
+
+main() async {
+  await testWithArchSuffix();
+  await testWithoutArchSuffix();
+}