Added new toHaveClasses matcher; tests included

spec/core/integration/MatchersSpec.js

@@ -621,6 +621,20 @@ describe('Matchers (Integration)', function() {
     });
   });
 
+  describe('toHaveClasses', function() {
+    verifyPasses(function(env) {
+      const el = specHelpers.domHelpers.createElementWithClassName(
+        'foo bar baz'
+      );
+      env.expect(el).toHaveClasses(['bar', 'baz']);
+    });
+
+    verifyFails(function(env) {
+      const el = specHelpers.domHelpers.createElementWithClassName('foo bar');
+      env.expect(el).toHaveClasses(['bar', 'baz']);
+    });
+  });
+
   describe('toHaveSpyInteractions', function() {
     let spyObj;
     beforeEach(function() {

spec/core/matchers/toHaveClassesSpec.js

@@ -0,0 +1,48 @@
+describe('toHaveClasses', function() {
+  it('fails for a DOM element that lacks all the expected classes', function() {
+    const matcher = jasmineUnderTest.matchers.toHaveClasses(),
+      result = matcher.compare(
+        specHelpers.domHelpers.createElementWithClassName(''),
+        ['foo', 'bar']
+      );
+
+    expect(result.pass).toBe(false);
+  });
+
+  it('passes for a DOM element that has all the expected classes', function() {
+    const matcher = jasmineUnderTest.matchers.toHaveClasses(),
+      el = specHelpers.domHelpers.createElementWithClassName('foo bar baz');
+
+    expect(matcher.compare(el, ['foo', 'bar']).pass).toBe(true);
+  });
+
+  it('fails for a DOM element that only has some matching classes', function() {
+    const matcher = jasmineUnderTest.matchers.toHaveClasses(),
+      el = specHelpers.domHelpers.createElementWithClassName('foo bar');
+
+    expect(matcher.compare(el, ['foo', 'can']).pass).toBe(false);
+  });
+
+  it('throws an exception when actual is not a DOM element', function() {
+    const matcher = jasmineUnderTest.matchers.toHaveClasses({
+      pp: jasmineUnderTest.makePrettyPrinter()
+    });
+
+    expect(function() {
+      matcher.compare('x', ['foo']);
+    }).toThrowError("'x' is not a DOM element");
+
+    expect(function() {
+      matcher.compare(undefined, ['foo']);
+    }).toThrowError('undefined is not a DOM element');
+
+    const textNode = specHelpers.domHelpers.document.createTextNode('');
+    expect(function() {
+      matcher.compare(textNode, ['foo']);
+    }).toThrowError('HTMLNode is not a DOM element');
+
+    expect(function() {
+      matcher.compare({ classList: '' }, ['foo']);
+    }).toThrowError("Object({ classList: '' }) is not a DOM element");
+  });
+});