Merge pull request #5 from rupurt/ak-include-text

Add support for text contains

README.md

@@ -46,13 +46,18 @@ expect(document.querySelector('#title')).to.have.html('Chai Tea')
 ```
 
 ### `text(text)`
-Assert that the text of the [HTMLElement][] is equal to the given text, using [`textContent`](https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent).
+Assert that the text of the [HTMLElement][] is equal to or contains the given text, using [`textContent`](https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent).
 
 ```js
 document.querySelector('.name').should.have.text('John Doe')
 expect(document.querySelector('#title')).to.have.text('Chai Tea')
 ```
 
+```js
+document.querySelector('.name').should.contain.text('John')
+expect(document.querySelector('#title')).to.contain.text('Chai')
+```
+
 ### `value(value)`
 Assert that the [HTMLElement][] has the given value
 

chai-dom.js

@@ -99,13 +99,24 @@
 
   chai.Assertion.addMethod('text', function(text) {
     var el = flag(this, 'object'), actual = flag(this, 'object').textContent
-    this.assert(
-      actual === text
-      , 'expected ' + elToString(el) + ' to have text #{exp}, but the text was #{act}'
-      , 'expected ' + elToString(el) + ' not to have text #{exp}'
-      , text
-      , actual
-    )
+
+    if (flag(this, 'contains')) {
+      this.assert(
+        actual.indexOf(text) >= 0
+        , 'expected #{act} to contain #{exp}'
+        , 'expected #{act} not to contain #{exp}'
+        , text
+        , actual
+      )
+    } else {
+      this.assert(
+        actual === text
+        , 'expected ' + elToString(el) + ' to have text #{exp}, but the text was #{act}'
+        , 'expected ' + elToString(el) + ' not to have text #{exp}'
+        , text
+        , actual
+      )
+    }
   })
 
   chai.Assertion.addMethod('value', function(value) {

test/tests.js

@@ -220,6 +220,26 @@ describe('DOM assertions', function() {
         subject.should.not.have.text('foo')
       }).should.fail('expected div not to have text \'foo\'')
     })
+
+    it('passes when the text contains', function() {
+      subject.should.contains.text('fo')
+    })
+
+    it('passes negated when the text doesn\'t contain', function() {
+      subject.should.not.contain.text('bar')
+    })
+
+    it('fails when the text doesn\'t contain', function() {
+      (function() {
+        subject.should.contain.text('bar')
+      }).should.fail('expected \'foo\' to contain \'bar\'')
+    })
+
+    it('fails negated when the text contains', function() {
+      (function() {
+        subject.should.not.contain.text('fo')
+      }).should.fail('expected \'foo\' not to contain \'fo\'')
+    })
   })
 
   describe('value', function() {