Add test to the checkbox prompt and add doc to the readme

README.md

@@ -162,6 +162,21 @@ See `examples/expand.js` for a running example.
   Answer: 
 ```
 
+### Checkbox - `{ type: "checkbox" }`
+
+Take `type`, `name`, `message`, `choices`[, `filter`, `validate`] properties.
+
+Choices marked as `{ checked: true }` will be checked by default.
+
+``` prompt
+[?] Choose your toppings: (press <space> to select)
+    [ ] Pepperoni
+  > [ ] Cheese
+    [X] Tomato
+    [ ] Pineapple
+    [ ] Bacon
+```
+
 ### Confirm - `{ type: "confirm" }`
 
 Take `type`, `name`, `message`[, `default`] properties. `default` is expected to be a boolean if used.

test/specs/prompts/checkbox.js

@@ -53,4 +53,32 @@ describe("`checkbox` prompt", function() {
     this.rl.emit("line");
   });
 
+  it("should check defaults choices", function( done ) {
+    this.fixture.choices = [
+      { name: "1", checked: true  },
+      { name: "2", checked: false },
+      { name: "3", checked: false }
+    ];
+    this.checkbox = new Checkbox( this.fixture, this.rl );
+    this.checkbox.run(function( answer ) {
+      expect(answer.length).to.equal(1);
+      expect(answer[0]).to.equal("1");
+      done();
+    });
+    this.rl.emit("line");
+  });
+
+  it("should toggle choice when hitting space", function( done ) {
+    this.checkbox.run(function( answer ) {
+      expect(answer.length).to.equal(1);
+      expect(answer[0]).to.equal("choice 1");
+      done();
+    });
+    this.rl.emit("keypress", " ", { name: "space" });
+    this.rl.emit("keypress", null, { name: "down" });
+    this.rl.emit("keypress", " ", { name: "space" });
+    this.rl.emit("keypress", " ", { name: "space" });
+    this.rl.emit("line");
+  });
+
 });