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43 lines
1.6 KiB
43 lines
1.6 KiB
def generated_file_staleness_test(name, outs, generated_pattern): |
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"""Tests that checked-in file(s) match the contents of generated file(s). |
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The resulting test will verify that all output files exist and have the |
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correct contents. If the test fails, it can be invoked with --fix to |
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bring the checked-in files up to date. |
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Args: |
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name: Name of the rule. |
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outs: the checked-in files that are copied from generated files. |
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generated_pattern: the pattern for transforming each "out" file into a |
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generated file. For example, if generated_pattern="generated/%s" then |
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a file foo.txt will look for generated file generated/foo.txt. |
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""" |
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script_name = name + ".py" |
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script_src = ":staleness_test.py" |
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# Filter out non-existing rules so Blaze doesn't error out before we even |
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# run the test. |
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existing_outs = native.glob(include = outs) |
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# The file list contains a few extra bits of information at the end. |
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# These get unpacked by the Config class in staleness_test_lib.py. |
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file_list = outs + [generated_pattern, native.package_name() or ".", name] |
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native.genrule( |
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name = name + "_makescript", |
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outs = [script_name], |
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srcs = [script_src], |
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testonly = 1, |
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cmd = "cat $(location " + script_src + ") > $@; " + |
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"sed -i.bak -e 's|INSERT_FILE_LIST_HERE|" + "\\\n ".join(file_list) + "|' $@", |
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) |
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native.py_test( |
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name = name, |
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srcs = [script_name], |
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data = existing_outs + [generated_pattern % file for file in outs], |
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deps = [ |
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":staleness_test_lib", |
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], |
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)
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