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# Tests for http://w3c.github.io/webvtt/#file-parsing
Tests that expect an 'error' event (due to invalid signature) are:
```bash
./signature-invalid.html
./support/*.vtt
```
Other tests are generated from source files with a custom format. The source files are:
```bash
./support/*.test
```
## .test Format
* The first line is the title of the test.
* Subsequent lines until a blank line contain HTML metadata.
* Subsequent lines until a `===` line contains JS assertions.
* Finally the WebVTT file. Special characters can be escaped using python3 escape sequences: `\x00`, `\r`.
## Building Tests
Requirements: Python 3.2 or newer
```bash
$ python3 tools/build.py
```
## Spec Coverage Report
There is also a python implementation of the WebVTT file parser algorithm and a
script to create a test coverage report of this implementation, under `tools/`.
Requirements:
* Python 3.2 or newer
* [Coverage.py](https://pypi.python.org/pypi/coverage)
Installing Coverage.py using [pip](https://pypi.python.org/pypi/pip).
```bash
$ pip3 install coverage
```
Generating the report:
```bash
$ python3 spec_report.py
```
Will output `report.html`.
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