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Add regression test for enum values containing backslashes #2454

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Merged
mromaszewicz merged 1 commit into from
Jul 12, 2026
+41 −0
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Add regression test for enum values containing backslashes #2454

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41 changes: 41 additions & 0 deletions pkg/codegen/codegen_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -581,6 +581,47 @@ paths:
assert.Contains(t, code, `ctx = context.WithValue(ctx, BearerAuthScopes, []string{"read"})`)
}

// TestEnumValueEscaping verifies that a string enum value containing a
// backslash is emitted as a valid, properly escaped Go string literal
// (the constants go through strconv.Quote).
// Please see https://github.com/oapi-codegen/oapi-codegen/issues/2180
func TestEnumValueEscaping(t *testing.T) {
const spec = `
openapi: "3.0.0"
info:
version: 1.0.0
title: Enum escaping
paths: {}
components:
schemas:
AutoAccident:
type: object
properties:
significant_injury:
type: string
enum: ["YES", "NO", "N\\A"]
`
loader := openapi3.NewLoader()
swagger, err := loader.LoadFromData([]byte(spec))
require.NoError(t, err)

opts := Configuration{
PackageName: "api",
Generate: GenerateOptions{Models: true},
OutputOptions: OutputOptions{SkipPrune: true},
}

code, err := Generate(swagger, opts)
require.NoError(t, err)

// The spec-level value is the three characters N, \, A; the generated
// constant must escape the backslash.
assert.Contains(t, code, `= "N\\A"`)

_, err = format.Source([]byte(code))
require.NoError(t, err)
}

const securityScopesSharedSpec = `
openapi: "3.0.0"
info:
Expand Down