update dart:math

test/codegen/lib/math/rectangle_test.dart

Index: test/codegen/lib/math/rectangle_test.dart
diff --git a/test/codegen/lib/math/rectangle_test.dart b/test/codegen/lib/math/rectangle_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..baacd966e692f1e7a585e4c25d7f4199b4f20afa
--- /dev/null
+++ b/test/codegen/lib/math/rectangle_test.dart
@@ -0,0 +1,250 @@
+// Copyright (c) 2013, 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.
+
+library rect_test;
+
+import 'dart:math';
+import 'package:unittest/unittest.dart';
+
+main() {
+  Rectangle createRectangle(List<num> a) {
+    return a != null ? new Rectangle(a[0], a[1], a[2] - a[0], a[3] - a[1])
+        : null;
+  }
+
+  test('construction', () {
+    var r0 = new Rectangle(10, 20, 30, 40);
+    expect(r0.toString(), 'Rectangle (10, 20) 30 x 40');
+    expect(r0.right, 40);
+    expect(r0.bottom, 60);
+
+    var r1 = new Rectangle.fromPoints(r0.topLeft, r0.bottomRight);
+    expect(r1, r0);
+
+    var r2 = new Rectangle.fromPoints(r0.bottomRight, r0.topLeft);
+    expect(r2, r0);
+  });
+
+  test('intersection', () {
+    var tests = [
+        [[10, 10, 20, 20], [15, 15, 25, 25], [15, 15, 20, 20]],
+        [[10, 10, 20, 20], [20, 0, 30, 10], [20, 10, 20, 10]],
+        [[0, 0, 1, 1], [10, 11, 12, 13], null],
+        [[11, 12, 98, 99], [22, 23, 34, 35], [22, 23, 34, 35]]];
+
+    for (var test in tests) {
+      var r0 = createRectangle(test[0]);
+      var r1 = createRectangle(test[1]);
+      var expected = createRectangle(test[2]);
+
+      expect(r0.intersection(r1), expected);
+      expect(r1.intersection(r0), expected);
+    }
+  });
+
+  test('intersects', () {
+    var r0 = new Rectangle(10, 10, 20, 20);
+    var r1 = new Rectangle(15, 15, 25, 25);
+    var r2 = new Rectangle(0, 0, 1, 1);
+
+    expect(r0.intersects(r1), isTrue);
+    expect(r1.intersects(r0), isTrue);
+
+    expect(r0.intersects(r2), isFalse);
+    expect(r2.intersects(r0), isFalse);
+  });
+
+  test('boundingBox', () {
+    var tests = [
+        [[10, 10, 20, 20], [15, 15, 25, 25], [10, 10, 25, 25]],
+        [[10, 10, 20, 20], [20, 0, 30, 10], [10, 0, 30, 20]],
+        [[0, 0, 1, 1], [10, 11, 12, 13], [0, 0, 12, 13]],
+        [[11, 12, 98, 99], [22, 23, 34, 35], [11, 12, 98, 99]]];
+
+    for (var test in tests) {
+      var r0 = createRectangle(test[0]);
+      var r1 = createRectangle(test[1]);
+      var expected = createRectangle(test[2]);
+
+      expect(r0.boundingBox(r1), expected);
+      expect(r1.boundingBox(r0), expected);
+    }
+  });
+
+  test('containsRectangle', () {
+    var r = new Rectangle(-10, 0, 20, 10);
+    expect(r.containsRectangle(r), isTrue);
+
+    expect(r.containsRectangle(
+        new Rectangle(double.NAN, double.NAN, double.NAN, double.NAN)), isFalse);
+
+    var r2 = new Rectangle(0, 2, 5, 5);
+    expect(r.containsRectangle(r2), isTrue);
+    expect(r2.containsRectangle(r), isFalse);
+
+    r2 = new Rectangle(-11, 2, 5, 5);
+    expect(r.containsRectangle(r2), isFalse);
+    r2 = new Rectangle(0, 2, 15, 5);
+    expect(r.containsRectangle(r2), isFalse);
+    r2 = new Rectangle(0, 2, 5, 10);
+    expect(r.containsRectangle(r2), isFalse);
+    r2 = new Rectangle(0, 0, 5, 10);
+    expect(r.containsRectangle(r2), isTrue);
+  });
+
+  test('containsPoint', () {
+    var r = new Rectangle(20, 40, 60, 80);
+
+    // Test middle.
+    expect(r.containsPoint(new Point(50, 80)), isTrue);
+
+    // Test edges.
+    expect(r.containsPoint(new Point(20, 40)), isTrue);
+    expect(r.containsPoint(new Point(50, 40)), isTrue);
+    expect(r.containsPoint(new Point(80, 40)), isTrue);
+    expect(r.containsPoint(new Point(80, 80)), isTrue);
+    expect(r.containsPoint(new Point(80, 120)), isTrue);
+    expect(r.containsPoint(new Point(50, 120)), isTrue);
+    expect(r.containsPoint(new Point(20, 120)), isTrue);
+    expect(r.containsPoint(new Point(20, 80)), isTrue);
+
+    // Test outside.
+    expect(r.containsPoint(new Point(0, 0)), isFalse);
+    expect(r.containsPoint(new Point(50, 0)), isFalse);
+    expect(r.containsPoint(new Point(100, 0)), isFalse);
+    expect(r.containsPoint(new Point(100, 80)), isFalse);
+    expect(r.containsPoint(new Point(100, 160)), isFalse);
+    expect(r.containsPoint(new Point(50, 160)), isFalse);
+    expect(r.containsPoint(new Point(0, 160)), isFalse);
+    expect(r.containsPoint(new Point(0, 80)), isFalse);
+  });
+
+  test('hashCode', () {
+    var a = new Rectangle(0, 1, 2, 3);
+    var b = new Rectangle(0, 1, 2, 3);
+    expect(a.hashCode, b.hashCode);
+
+    var c = new Rectangle(1, 0, 2, 3);
+    expect(a.hashCode == c.hashCode, isFalse);
+  });
+
+  {  // Edge cases for boundingBox/intersection
+    edgeTest(a, l) {
+      test('edge case $a/$l', () {
+        var r = new Rectangle(a, a, l, l);
+        expect(r.boundingBox(r), r);
+        expect(r.intersection(r), r);
+      });
+    }
+
+    var bignum1 = 0x20000000000000 + 0.0;
+    var bignum2 = 0x20000000000002 + 0.0;
+    var bignum3 = 0x20000000000004 + 0.0;
+    edgeTest(1.0, bignum1);
+    edgeTest(1.0, bignum2);
+    edgeTest(1.0, bignum3);
+    edgeTest(bignum1, 1.0);
+    edgeTest(bignum2, 1.0);
+    edgeTest(bignum3, 1.0);
+  }
+
+  test("equality with different widths", () {
+    var bignum = 0x80000000000008 + 0.0;
+    var r1 = new Rectangle(bignum, bignum, 1.0, 1.0);
+    var r2 = new Rectangle(bignum, bignum, 2.0, 2.0);
+    expect(r1, r2);
+    expect(r1.hashCode, r2.hashCode);
+    expect(r1.right, r2.right);
+    expect(r1.bottom, r2.bottom);
+    expect(r1.width, 1.0);
+    expect(r2.width, 2.0);
+  });
+
+  test('negative lengths', () {
+    // Constructor allows negative lengths, but clamps them to zero.
+    expect(new Rectangle(4, 4, -2, -2), new Rectangle(4, 4, 0, 0));
+    expect(new MutableRectangle(4, 4, -2, -2), new Rectangle(4, 4, 0, 0));
+
+    // Setters clamp negative lengths to zero.
+    var r = new MutableRectangle(0, 0, 1, 1);
+    r.width = -1;
+    r.height = -1;
+    expect(r, new Rectangle(0, 0, 0, 0));
+
+    // Test that doubles are clamped to double zero.
+    r = new Rectangle(1.5, 1.5, -2.5, -2.5);
+    expect(identical(r.width, 0.0), isTrue);
+    expect(identical(r.height, 0.0), isTrue);
+  });
+
+  // A NaN-value in any rectangle value means the rectange is considered
+  // empty (contains no points, doesn't intersect any other rectangle).
+  const NaN = double.NAN;
+  var isNaN = predicate((x) => x is double && x.isNaN, "NaN");
+
+  test('NaN left', () {
+    var rectangles = [
+      const Rectangle(NaN, 1, 2, 3),
+      new MutableRectangle(NaN, 1, 2, 3),
+      new Rectangle.fromPoints(new Point(NaN, 1), new Point(2, 4)),
+      new MutableRectangle.fromPoints(new Point(NaN, 1), new Point(2, 4)),
+    ];
+    for (var r in rectangles) {
+      expect(r.containsPoint(new Point(0, 1)), false);
+      expect(r.containsRectangle(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.intersects(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.left, isNaN);
+      expect(r.right, isNaN);
+    }
+  });
+
+  test('NaN top', () {
+    var rectangles = [
+      const Rectangle(0, NaN, 2, 3),
+      new MutableRectangle(0, NaN, 2, 3),
+      new Rectangle.fromPoints(new Point(0, NaN), new Point(2, 4)),
+      new MutableRectangle.fromPoints(new Point(0, NaN), new Point(2, 4)),
+    ];
+    for (var r in rectangles) {
+      expect(r.containsPoint(new Point(0, 1)), false);
+      expect(r.containsRectangle(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.intersects(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.top, isNaN);
+      expect(r.bottom, isNaN);
+    }
+  });
+
+  test('NaN width', () {
+    var rectangles = [
+      const Rectangle(0, 1, NaN, 3),
+      new MutableRectangle(0, 1, NaN, 3),
+      new Rectangle.fromPoints(new Point(0, 1), new Point(NaN, 4)),
+      new MutableRectangle.fromPoints(new Point(0, 1), new Point(NaN, 4)),
+    ];
+    for (var r in rectangles) {
+      expect(r.containsPoint(new Point(0, 1)), false);
+      expect(r.containsRectangle(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.intersects(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.right, isNaN);
+      expect(r.width, isNaN);
+    }
+  });
+
+  test('NaN heigth', () {
+    var rectangles = [
+      const Rectangle(0, 1, 2, NaN),
+      new MutableRectangle(0, 1, 2, NaN),
+      new Rectangle.fromPoints(new Point(0, 1), new Point(2, NaN)),
+      new MutableRectangle.fromPoints(new Point(0, 1), new Point(2, NaN)),
+    ];
+    for (var r in rectangles) {
+      expect(r.containsPoint(new Point(0, 1)), false);
+      expect(r.containsRectangle(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.intersects(new Rectangle(0, 1, 2, 3)), false);
+      expect(r.bottom, isNaN);
+      expect(r.height, isNaN);
+    }
+  });
+}
+