Better pretty printing for typed arrays

spec/core/matchers/toEqualSpec.js

@@ -211,6 +211,16 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
+  it("reports mismatches between arrays of different types", function() {
+    jasmine.getEnv().requireFunctioningTypedArrays();
+
+    var actual = new Uint32Array([1, 2, 3]),
+      expected = new Uint16Array([1, 2, 3]),
+      message = "Expected Uint32Array [ 1, 2, 3 ] to equal Uint16Array [ 1, 2, 3 ].";
+
+    expect(compareEquals(actual, expected).message).toEqual(message);
+  });
+
   it("reports mismatches involving NaN", function() {
     var actual = {x: 0},
       expected = {x: 0/0},

spec/helpers/checkForTypedArrays.js

@@ -0,0 +1,20 @@
+(function(env) {
+  function hasFunctioningTypedArrays() {
+    if (typeof Uint32Array === 'undefined') { return false; }
+
+    try {
+      var a = new Uint32Array([1, 2, 3]);
+      if (a.length !== 3) { return false; }
+      return true;
+    } catch(e) {
+      return false;
+    }
+  }
+
+  env.requireFunctioningTypedArrays = function() {
+    if (!hasFunctioningTypedArrays()) {
+      env.pending("Browser has incomplete or missing support for typed arrays");
+    }
+  };
+  
+})(jasmine.getEnv());

spec/support/jasmine.json

@@ -9,6 +9,7 @@
     "helpers/asyncAwait.js",
     "helpers/checkForSet.js",
     "helpers/checkForMap.js",
+    "helpers/checkForTypedArrays.js",
     "helpers/nodeDefineJasmineUnderTest.js"
   ],
   "random": true

spec/support/jasmine.yml

@@ -20,6 +20,7 @@ helpers:
   - 'helpers/BrowserFlags.js'
   - 'helpers/checkForSet.js'
   - 'helpers/checkForMap.js'
+  - 'helpers/checkForTypedArrays.js'
   - 'helpers/defineJasmineUnderTest.js'
 spec_files:
   - '**/*[Ss]pec.js'