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1 # Copyright 2014 The Chromium Authors. All rights reserved. | |
2 # Use of this source code is governed by a BSD-style license that can be | |
3 # found in the LICENSE file. | |
4 | |
5 | |
6 class OutputFormatter(object): | |
7 """A formatter for PageTestResults. | |
8 | |
9 An OutputFormatter takes PageTestResults, formats the results | |
10 (telemetry.value.Value instances), and output the formatted results | |
11 in the given output stream. | |
12 | |
13 Examples of output formatter: CsvOutputFormatter produces results in | |
14 CSV format.""" | |
15 | |
16 def __init__(self, output_stream): | |
17 """Constructs a new formatter that writes to the output_stream. | |
18 | |
19 Args: | |
20 output_stream: The stream to write the formatted output to. | |
21 """ | |
22 self._output_stream = output_stream | |
23 | |
24 def Format(self, page_test_results): | |
25 """Formats the given PageTestResults into the output stream. | |
26 | |
27 This will be called once at the end of a benchmark. | |
28 | |
29 Args: | |
30 page_test_results: A PageTestResults object containing all results | |
31 from the current benchmark run. | |
32 """ | |
33 raise NotImplementedError() | |
34 | |
35 @property | |
36 def output_stream(self): | |
37 return self._output_stream | |
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