Julie Ralph 686457890d chore(test): rename RootTestComponent to ComponentFixture
BREAKING CHANGE:

Before:

```
testComponentBuilder.createAsync(MyComponent).then(root: RootTestComponent => {
}
```

After:

```
testComponentBuilder.createAsync(MyComponent).then(fixture: ComponentFixture => {
}
```

Closes #4711
2015-11-03 14:56:22 -08:00
..