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b104910481
### Describe Your Changes This PR continues the implementation of integration tests (#7199). It adds the support for vm-single: - A vmsingle app wrapper has been added - Sample vmsingle tests that test the VM documentation related to querying data (#7435) - The tests use the go-cmp/{cmp,/cmpopts} packages, therefore they have been added to ./vendor - Minor refactoring: data objects have been moved to model.go Advice on porting things to cluster branch: - The build rule must include tests that start with TestVmsingle (similarly to how TestCluster tests are skipped in master branch) - The build rule must depend on `vmstorage vminsert vmselect` instead of `victoria-metrics` - The query_test.go can actually be implemented for cluster as well. To do this the tests need to be renamed to start with TestCluster and the tests must instantiace vm{storage,insert,select} instead of vmsingle. ### Checklist The following checks are **mandatory**: - [x] My change adheres [VictoriaMetrics contributing guidelines](https://docs.victoriametrics.com/contributing/). --------- Signed-off-by: Artem Fetishev <[email protected]> Signed-off-by: hagen1778 <[email protected]> Co-authored-by: hagen1778 <[email protected]>
37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
// Copyright 2018, The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cmpopts
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import (
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"github.com/google/go-cmp/cmp"
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)
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type xformFilter struct{ xform cmp.Option }
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func (xf xformFilter) filter(p cmp.Path) bool {
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for _, ps := range p {
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if t, ok := ps.(cmp.Transform); ok && t.Option() == xf.xform {
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return false
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}
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}
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return true
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}
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// AcyclicTransformer returns a [cmp.Transformer] with a filter applied that ensures
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// that the transformer cannot be recursively applied upon its own output.
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//
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// An example use case is a transformer that splits a string by lines:
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//
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// AcyclicTransformer("SplitLines", func(s string) []string{
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// return strings.Split(s, "\n")
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// })
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//
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// Had this been an unfiltered [cmp.Transformer] instead, this would result in an
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// infinite cycle converting a string to []string to [][]string and so on.
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func AcyclicTransformer(name string, xformFunc interface{}) cmp.Option {
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xf := xformFilter{cmp.Transformer(name, xformFunc)}
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return cmp.FilterPath(xf.filter, xf.xform)
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}
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