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fix: Allow patches with empty files with multiple newlines or comments #5771

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Merged
merged 5 commits into from
Mar 17, 2025
Merged

fix: Allow patches with empty files with multiple newlines or comments #5771

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1e3d875
fix: Add test, when an empty patch file is given, it should not fail
jchanam Sep 27, 2024
5952169
fix: Add code so there's no error given if an empty file is given as …
jchanam Sep 27, 2024
bfd408c
chore: Generate plugin with pluginator
jchanam Nov 19, 2024
6e60747
chore: fix tests
jchanam Dec 26, 2024
bec1276
Add t.helper() at start of test function
jchanam Jan 17, 2025
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5 changes: 3 additions & 2 deletions plugin/builtin/patchtransformer/PatchTransformer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -59,8 +59,9 @@ func (p *plugin) Config(h *resmap.PluginHelpers, c []byte) error {
patchesSM, errSM := h.ResmapFactory().RF().SliceFromBytes([]byte(p.patchText))
patchesJson, errJson := jsonPatchFromBytes([]byte(p.patchText))

if (errSM == nil && errJson == nil) ||
(patchesSM != nil && patchesJson != nil) {
if ((errSM == nil && errJson == nil) ||
(patchesSM != nil && patchesJson != nil)) &&
(len(patchesSM) > 0 && len(patchesJson) > 0) {
return fmt.Errorf(
"illegally qualifies as both an SM and JSON patch: %s",
p.patchSource)
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29 changes: 29 additions & 0 deletions plugin/builtin/patchtransformer/PatchTransformer_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1108,3 +1108,32 @@ spec:
name: test-deployment
`)
}

func TestPatchTransformerPatchEmpty(t *testing.T) {
th := kusttest_test.MakeEnhancedHarness(t).
PrepBuiltin("PatchTransformer")
defer th.Reset()

th.RunTransformerAndCheckError(`
`, someDeploymentResources, func(t *testing.T, err error) {
if err != nil {
t.Fatalf("unexpected error")
}
})
}

func TestPatchTransformerPatchEmptyOnlyComments(t *testing.T) {
th := kusttest_test.MakeEnhancedHarness(t).
PrepBuiltin("PatchTransformer")
defer th.Reset()

th.RunTransformerAndCheckError(`
# File with only comments

# Is a virtually empty yaml
`, someDeploymentResources, func(t *testing.T, err error) {
if err != nil {
t.Fatalf("unexpected error")
}
})
}