Migrate test block 8 to Dart 2.0.

tests/corelib_strong/expression_test.dart

-// Copyright (c) 2011, 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.
-
-import "package:expect/expect.dart";
-
-// Tests basic expressions. Does not attempt to validate the details of arithmetic, coercion, and
-// so forth.
-class ExpressionTest {
-  ExpressionTest() {}
-
-  int foo;
-
-  static testMain() {
-    var test = new ExpressionTest();
-    test.testBinary();
-    test.testUnary();
-    test.testShifts();
-    test.testBitwise();
-    test.testIncrement();
-    test.testMangling();
-  }
-
-  testBinary() {
-    int x = 4, y = 2;
-    Expect.equals(6, x + y);
-    Expect.equals(2, x - y);
-    Expect.equals(8, x * y);
-    Expect.equals(2, x / y);
-    Expect.equals(0, x % y);
-  }
-
-  testUnary() {
-    int x = 4, y = 2, z = -5;
-    bool t = true, f = false;
-    Expect.equals(-4, -x);
-    Expect.equals(4, ~z);
-    Expect.equals(f, !t);
-  }
-
-  testShifts() {
-    int x = 4, y = 2;
-    Expect.equals(y, x >> 1);
-    Expect.equals(x, y << 1);
-  }
-
-  testBitwise() {
-    int x = 4, y = 2;
-    Expect.equals(6, (x | y));
-    Expect.equals(0, (x & y));
-    Expect.equals(6, (x ^ y));
-  }
-
-  operator [](int index) {
-    return foo;
-  }
-
-  operator []=(int index, int value) {
-    foo = value;
-  }
-
-  testIncrement() {
-    int x = 4, a = x++;
-    Expect.equals(4, a);
-    Expect.equals(5, x);
-    Expect.equals(6, ++x);
-    Expect.equals(6, x++);
-    Expect.equals(7, x);
-    Expect.equals(6, --x);
-    Expect.equals(6, x--);
-    Expect.equals(5, x);
-
-    this.foo = 0;
-    Expect.equals(0, this.foo++);
-    Expect.equals(1, this.foo);
-    Expect.equals(2, ++this.foo);
-    Expect.equals(2, this.foo);
-    Expect.equals(2, this.foo--);
-    Expect.equals(1, this.foo);
-    Expect.equals(0, --this.foo);
-    Expect.equals(0, this.foo);
-
-    Expect.equals(0, this[0]++);
-    Expect.equals(1, this[0]);
-    Expect.equals(2, ++this[0]);
-    Expect.equals(2, this[0]);
-    Expect.equals(2, this[0]--);
-    Expect.equals(1, this[0]);
-    Expect.equals(0, --this[0]);
-    Expect.equals(0, this[0]);
-
-    int $0 = 42, $1 = 87, $2 = 117;
-    Expect.equals(42, $0++);
-    Expect.equals(43, $0);
-    Expect.equals(44, ++$0);
-    Expect.equals(88, $0 += $0);
-    Expect.equals(87, $1++);
-    Expect.equals(88, $1);
-    Expect.equals(89, ++$1);
-    Expect.equals(178, ($1 += $1));
-    Expect.equals(117, $2++);
-    Expect.equals(118, $2);
-    Expect.equals(119, ++$2);
-  }
-
-  void testMangling() {
-    int $0 = 42, $1 = 87, $2 = 117;
-    this[0] = 0;
-    Expect.equals(42, (this[0] += $0));
-    Expect.equals(129, (this[0] += $1));
-    Expect.equals(246, (this[0] += $2));
-  }
-}
-
-main() {
-  ExpressionTest.testMain();
-}