| The test verifies that DevTools events work. |
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| Adding a listener with this 'original listener' |
| Dispatching event with the data 'first event' |
| Heard event with the data 'first event' and this 'original listener' |
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| Adding a listener with this 'second listener' |
| Dispatching event with the data 'second event' |
| Heard event with the data 'second event' and this 'original listener' |
| Heard event with the data 'second event' and this 'second listener' |
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| Removing a listener with this 'second listener' |
| Dispatching event with the data 'third event' |
| Heard event with the data 'third event' and this 'original listener' |
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| Adding a listener that removes a later listener |
| Adding a listener with this 'later listener to be removed' |
| Dispatching event with the data 'fourth event' |
| Heard event with the data 'fourth event' and this 'original listener' |
| removing the listener during the event: fourth event |
| Removing a listener with this 'later listener to be removed' |
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