Bug 1165052 - Part 13: Add tests for ArraySpeciesCreate. r=efaust
☠☠ backed out by 8a74723c089e ☠ ☠
authorTooru Fujisawa <arai_a@mac.com>
Fri, 07 Aug 2015 08:02:32 +0900
changeset 290618 52a142a57bf629018a0b16e85d75450e1699c0da
parent 290617 5e108d752209e5dc17c91775974d0b82b7ff2f93
child 290619 10621b5e7de50d4df6190354e334309a7b6987d9
push id19656
push usergwagner@mozilla.com
push dateMon, 04 Apr 2016 13:43:23 +0000
treeherderb2g-inbound@e99061fde28a [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersefaust
bugs1165052
milestone48.0a1
Bug 1165052 - Part 13: Add tests for ArraySpeciesCreate. r=efaust
js/src/tests/ecma_6/Array/species.js
new file mode 100644
--- /dev/null
+++ b/js/src/tests/ecma_6/Array/species.js
@@ -0,0 +1,182 @@
+var BUGNUMBER = 1165052;
+var summary = 'Use ArraySpeciesCreate in Array.prototype.{concat,filter,map,slice,splice}.';
+
+print(BUGNUMBER + ": " + summary);
+
+function test(funcName, args, expectedLength, expectedLogs) {
+  // modified @@species
+  function FakeArray(n) {
+    this.length = n;
+  }
+  var a = [1, 2, 3, 4, 5];
+  a.constructor = {
+    [Symbol.species]: FakeArray
+  };
+  var b = a[funcName](...args);
+  assertEq(b.constructor, FakeArray);
+
+  function FakeArrayWithSpecies(n) {
+    this.length = n;
+  }
+  FakeArrayWithSpecies[Symbol.species] = FakeArrayWithSpecies;
+  a = [1, 2, 3, 4, 5];
+  a.constructor = FakeArrayWithSpecies;
+  b = a[funcName](...args);
+  assertEq(b.constructor, FakeArrayWithSpecies);
+
+  function FakeArrayWithHook(n) {
+    return new Proxy(new FakeArray(n), {
+      set(that, name, value) {
+        logs += "set:" + name + ":" + value + ",";
+        return true;
+      },
+      defineProperty(that, name, desc) {
+        logs += "define:" + name + ":" + desc.value + ":" + desc.configurable + ":" + desc.enumerable + ":" + desc.writable + ",";
+        return true;
+      }
+    });
+  }
+  var logs = "";
+  var ctorProxy = new Proxy({}, {
+    get(that, name) {
+      logs += "c-get:" + name.toString() + ",";
+      if (name == Symbol.species)
+        return FakeArrayWithHook;
+
+      return undefined;
+    }
+  });
+  a = new Proxy([1, 2, 3, 4, 5], {
+    get(that, name) {
+      logs += "get:" + name.toString() + ",";
+      if (name == "constructor")
+        return ctorProxy;
+      return that[name];
+    }
+  });
+  b = a[funcName](...args);
+  assertEq(b.constructor, FakeArray);
+  assertEq(Object.keys(b).sort().join(","), "length");
+  assertEq(b.length, expectedLength);
+  assertEq(logs, expectedLogs);
+
+  // no @@species
+  a = [1, 2, 3, 4, 5];
+  a.constructor = FakeArray;
+  b = a[funcName](...args);
+  assertEq(b.constructor, Array);
+
+  a = [1, 2, 3, 4, 5];
+  a.constructor = {
+    [Symbol.species]: undefined
+  };
+  b = a[funcName](...args);
+  assertEq(b.constructor, Array);
+
+  a = [1, 2, 3, 4, 5];
+  a.constructor = {
+    [Symbol.species]: null
+  };
+  b = a[funcName](...args);
+  assertEq(b.constructor, Array);
+
+  // invalid @@species
+  for (var species of [0, 1.1, true, false, "a", /a/, Symbol.iterator, [], {}]) {
+    a = [1, 2, 3, 4, 5];
+    a.constructor = {
+      [Symbol.species]: species
+    };
+    assertThrowsInstanceOf(() => a[funcName](...args), TypeError);
+  }
+
+  // undefined constructor
+  a = [1, 2, 3, 4, 5];
+  a.constructor = undefined;
+  b = a[funcName](...args);
+  assertEq(b.constructor, Array);
+
+  // invalid constructor
+  for (var ctor of [null, 0, 1.1, true, false, "a", Symbol.iterator]) {
+    a = [1, 2, 3, 4, 5];
+    a.constructor = ctor;
+    assertThrowsInstanceOf(() => a[funcName](...args), TypeError);
+  }
+
+  // not an array
+  a = new Proxy({
+    0: 1, 1: 2, 2: 3, 3: 4, 4: 5,
+    length: 5,
+    [funcName]: Array.prototype[funcName]
+  }, {
+    get(that, name) {
+      assertEq(name !== "constructor", true);
+      return that[name];
+    }
+  });
+  b = a[funcName](...args);
+  assertEq(b.constructor, Array);
+
+  // @@species from different global
+  var g = newGlobal();
+  g.eval("function FakeArray(n) { this.length = n; }");
+  a = [1, 2, 3, 4, 5];
+  a.constructor = {
+    [Symbol.species]: g.FakeArray
+  };
+  b = a[funcName](...args);
+  assertEq(b.constructor, g.FakeArray);
+
+  a = [1, 2, 3, 4, 5];
+  a.constructor = {
+    [Symbol.species]: g.Array
+  };
+  b = a[funcName](...args);
+  assertEq(b.constructor, g.Array);
+
+  // constructor from different global
+  g.eval("function FakeArrayWithSpecies(n) { this.length = n; }");
+  g.eval("FakeArrayWithSpecies[Symbol.species] = FakeArrayWithSpecies;");
+  a = [1, 2, 3, 4, 5];
+  a.constructor = g.FakeArrayWithSpecies;
+  b = a[funcName](...args);
+  assertEq(b.constructor, g.FakeArrayWithSpecies);
+
+  g.eval("var a = [1, 2, 3, 4, 5];");
+  b = Array.prototype[funcName].apply(g.a, args);
+  assertEq(b.constructor, Array);
+
+  // running in different global
+  b = g.a[funcName](...args);
+  assertEq(b.constructor, g.Array);
+
+  // subclasses
+  // not-modified @@species
+  eval(`
+class ${funcName}Class extends Array {
+}
+a = new ${funcName}Class(1, 2, 3, 4, 5);
+b = a[funcName](...args);
+assertEq(b.constructor, ${funcName}Class);
+`);
+
+  // modified @@species
+  eval(`
+class ${funcName}Class2 extends Array {
+  static get [Symbol.species]() {
+    return Date;
+  }
+}
+a = new ${funcName}Class2(1, 2, 3, 4, 5);
+b = a[funcName](...args);
+assertEq(b.constructor, Date);
+`);
+}
+
+test("concat", [], 0, "get:concat,get:constructor,c-get:Symbol(Symbol.species),get:length,get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");
+test("filter", [x => x % 2], 0, "get:filter,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:1:true:true:true,get:1,get:2,define:1:3:true:true:true,get:3,get:4,define:2:5:true:true:true,");
+test("map", [x => x * 2], 5, "get:map,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:2:true:true:true,get:1,define:1:4:true:true:true,get:2,define:2:6:true:true:true,get:3,define:3:8:true:true:true,get:4,define:4:10:true:true:true,");
+test("slice", [], 5, "get:slice,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");
+test("splice", [0, 5], 5, "get:splice,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);