#993. co19 ffi tests. Initial commit

LibTest/ffi/DartRepresentationOf/DartRepresentationOf_A01_t01.dart

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+  /*
+ * Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
+ * for details. All rights reserved. Use of this source code is governed by a
+ * BSD-style license that can be found in the LICENSE file.
+ */
+/**
+ * @assertion const DartRepresentationOf(String nativeType)
+ *  Represents the Dart type corresponding to a NativeType.
+ *
+ * @description Checks that DartRepresentationOf can be created
+ * @author sgrekhov@unipro.ru
+ */
+import "dart:ffi";
+import "../../../Utils/expect.dart";
+
+void main() {
+  DartRepresentationOf o1 = new DartRepresentationOf("");
+  Expect.isTrue(o1 is DartRepresentationOf);
+
+  DartRepresentationOf o2 = new DartRepresentationOf("double");
+  Expect.isTrue(o2 is DartRepresentationOf);
+  Expect.equals("DartRepresentationOf", o2.runtimeType.toString());
+}
+

LibTest/ffi/Dart_CObject/Dart_CObject_A01_t01.dart

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+  /*
+ * Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
+ * for details. All rights reserved. Use of this source code is governed by a
+ * BSD-style license that can be found in the LICENSE file.
+ */
+/**
+ * @assertion Dart_CObject()
+ *
+ * @description Checks that Dart_CObject can be created
+ * @author sgrekhov@unipro.ru
+ */
+import "dart:ffi";
+import "../../../Utils/expect.dart";
+
+void main() {
+  Dart_CObject o = new Dart_CObject();
+  Expect.isTrue(o is Dart_CObject);
+  Expect.isTrue(o is Opaque);
+}
+

LibTest/ffi/DynamicLibrary/DynamicLibrary.open_A01_t01.dart

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+  /*
+ * Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
+ * for details. All rights reserved. Use of this source code is governed by a
+ * BSD-style license that can be found in the LICENSE file.
+ */
+/**
+ * @assertion DynamicLibrary.open(String name)
+ *  Loads a dynamic library file with local visibility.
+ *
+ *  Throws an ArgumentError if loading the dynamic library fails.
+ *
+ *  Calling this function multiple times, even in different isolates, returns
+ *  objects which are equal but not identical. The underlying library is only
+ *  loaded once into the DartVM by the OS.
+ *
+ * @description Checks that this constructor loads a dynamic library file with
+ * local visibility
+ * @author sgrekhov@unipro.ru
+ */
+import "dart:ffi";
+import "../ffi_utils.dart";
+import "../../../Utils/expect.dart";
+
+void main() {
+  String path = libPath("ffi_test_dynamic_library");
+  DynamicLibrary dl = new DynamicLibrary.open(path);
+  Expect.isNotNull(dl);
+}
+

LibTest/ffi/ffi_utils.dart

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+  /*
+ * Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
+ * for details. All rights reserved. Use of this source code is governed by a
+ * BSD-style license that can be found in the LICENSE file.
+ */
+/**
+ * @description Utils for co19 ffi tests
+ * @author sgrekhov@unipro.ru
+ */
+import 'dart:ffi' as ffi;
+import 'dart:io' show Platform;
+
+String libPath(String libName, {String path = ""}) {
+  if (Platform.isLinux || Platform.isAndroid || Platform.isFuchsia)
+    return path + "lib" + libName + ".so";
+  if (Platform.isMacOS) return path + "lib" + libName + ".dylib";
+  if (Platform.isWindows) return path + libName + ".dll";
+  throw Exception("Platform not implemented");
+}
+
+ffi.DynamicLibrary openLibrary(String name, {String path = ""}) {
+  String fullPath = libPath(name, path: path);
+  return ffi.DynamicLibrary.open(fullPath);
+}