mirror of https://github.com/hashicorp/consul
53 lines
1.7 KiB
Go
53 lines
1.7 KiB
Go
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package proxycfg
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import (
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"context"
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"regexp"
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"testing"
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"github.com/google/go-cmp/cmp"
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"github.com/google/go-cmp/cmp/cmpopts"
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fuzz "github.com/google/gofuzz"
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"github.com/hashicorp/consul/proto/pbpeering"
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)
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func TestConfigSnapshot_Clone(t *testing.T) {
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// ConfigSnapshot is a complex struct that (directly or indirectly) has a copy
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// of most of the structs in the agent/structs package. It'd be easy to break
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// the Clone method accidentally by changing one of those distant structs, so
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// we test it by using a fuzzer to traverse the graph and fill every field and
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// then compare the original to the copy.
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f := fuzz.New()
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f.NilChance(0)
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f.NumElements(1, 3)
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f.SkipFieldsWithPattern(regexp.MustCompile("^ServerSNIFn$"))
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f.Funcs(
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// Populate map[string]interface{} since gofuzz panics on these. We force them
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// to be any rather than concrete types otherwise they won't compare equal when
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// coming back out the other side.
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func(m map[string]any, c fuzz.Continue) {
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m[c.RandString()] = any(float64(c.RandUint64()))
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m[c.RandString()] = any(c.RandString())
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m[c.RandString()] = any([]any{c.RandString(), c.RandString()})
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m[c.RandString()] = any(map[string]any{c.RandString(): c.RandString()})
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},
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func(*context.CancelFunc, fuzz.Continue) {},
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)
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snapshot := new(ConfigSnapshot)
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f.Fuzz(snapshot)
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clone := snapshot.Clone()
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diff := cmp.Diff(snapshot, clone,
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cmpopts.IgnoreUnexported(indexedTarget{}),
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cmpopts.IgnoreUnexported(pbpeering.PeeringTrustBundle{}),
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cmpopts.IgnoreTypes(context.CancelFunc(nil)),
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)
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if diff != "" {
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t.Logf("Copied snaspshot is different to the original. You may need to re-run `make deep-copy`.\nDiff:\n%s", diff)
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t.FailNow()
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}
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}
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