Add missing Grid tests

Author: AlexKVal

test/GridSpec.js

@@ -0,0 +1,43 @@
+import React from 'react';
+import ReactTestUtils from 'react/lib/ReactTestUtils';
+import Grid from '../src/Grid';
+
+describe('Grid', function () {
+  it('uses "div" by default', function () {
+    let instance = ReactTestUtils.renderIntoDocument(
+      <Grid />
+    );
+
+    assert.equal(React.findDOMNode(instance).nodeName, 'DIV');
+  });
+
+  it('has "container" class by default', function () {
+    let instance = ReactTestUtils.renderIntoDocument(
+      <Grid />
+    );
+    assert.equal(React.findDOMNode(instance).className, 'container');
+  });
+
+  it('turns grid into "full-width" layout via "fluid" property set', function () {
+    let instance = ReactTestUtils.renderIntoDocument(
+      <Grid fluid />
+    );
+    assert.equal(React.findDOMNode(instance).className, 'container-fluid');
+  });
+
+  it('should merge additional classes passed in', function () {
+    let instance = ReactTestUtils.renderIntoDocument(
+      <Grid className="whatever" fluid />
+    );
+    assert.ok(React.findDOMNode(instance).className.match(/\bwhatever\b/));
+    assert.ok(React.findDOMNode(instance).className.match(/\bcontainer-fluid\b/));
+  });
+
+  it('allows custom elements instead of "div"', function () {
+    let instance = ReactTestUtils.renderIntoDocument(
+      <Grid componentClass='section' />
+    );
+
+    assert.equal(React.findDOMNode(instance).nodeName, 'SECTION');
+  });
+});