示例#1
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func (*simplestreamsSuite) TestFilterRemovesNonMatches(c *gc.C) {
	array := simplestreams.IndexMetadataSlice{&simplestreams.IndexMetadata{}}
	c.Check(
		simplestreams.Filter(array, func(*simplestreams.IndexMetadata) bool { return false }),
		gc.HasLen,
		0)
}
示例#2
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func (*simplestreamsSuite) TestFilterReturnsNothingForEmptyArray(c *gc.C) {
	empty := simplestreams.IndexMetadataSlice{}
	c.Check(
		simplestreams.Filter(empty, func(*simplestreams.IndexMetadata) bool { return true }),
		gc.HasLen,
		0)
}
示例#3
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func (*simplestreamsSuite) TestFilterIncludesMatches(c *gc.C) {
	metadata := simplestreams.IndexMetadata{}
	array := simplestreams.IndexMetadataSlice{&metadata}
	c.Check(
		simplestreams.Filter(array, func(*simplestreams.IndexMetadata) bool { return true }),
		gc.DeepEquals,
		simplestreams.IndexMetadataSlice{&metadata})
}
示例#4
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func (*simplestreamsSuite) TestFilterPreservesOrder(c *gc.C) {
	array := simplestreams.IndexMetadataSlice{
		&simplestreams.IndexMetadata{CloudName: "aws"},
		&simplestreams.IndexMetadata{CloudName: "maas"},
		&simplestreams.IndexMetadata{CloudName: "openstack"},
	}

	c.Check(
		simplestreams.Filter(array, func(metadata *simplestreams.IndexMetadata) bool { return true }),
		gc.DeepEquals,
		array)
}
示例#5
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func (*simplestreamsSuite) TestFilterCombinesMatchesAndNonMatches(c *gc.C) {
	array := simplestreams.IndexMetadataSlice{
		&simplestreams.IndexMetadata{Format: "1.0"},
		&simplestreams.IndexMetadata{Format: "1.1"},
		&simplestreams.IndexMetadata{Format: "2.0"},
		&simplestreams.IndexMetadata{Format: "2.1"},
	}

	dotOFormats := simplestreams.Filter(array, func(metadata *simplestreams.IndexMetadata) bool {
		return strings.HasSuffix(metadata.Format, ".0")
	})

	c.Check(dotOFormats, gc.DeepEquals, simplestreams.IndexMetadataSlice{array[0], array[2]})
}
示例#6
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func (*simplestreamsSuite) TestFilterLeavesOriginalUnchanged(c *gc.C) {
	item1 := simplestreams.IndexMetadata{CloudName: "aws"}
	item2 := simplestreams.IndexMetadata{CloudName: "openstack"}
	array := simplestreams.IndexMetadataSlice{&item1, &item2}

	result := simplestreams.Filter(array, func(metadata *simplestreams.IndexMetadata) bool {
		return metadata.CloudName == "aws"
	})
	// This exercises both the "leave out" and the "include" code paths.
	c.Assert(result, gc.HasLen, 1)

	// The original, however, has not changed.
	c.Assert(array, gc.HasLen, 2)
	c.Check(array, gc.DeepEquals, simplestreams.IndexMetadataSlice{&item1, &item2})
}