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47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
// +build go1.10
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package yaml
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import (
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"fmt"
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"testing"
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)
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func TestUnmarshalWithTags(t *testing.T) {
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type WithTaggedField struct {
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Field string `json:"field"`
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}
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t.Run("Known tagged field", func(t *testing.T) {
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y := []byte(`field: "hello"`)
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v := WithTaggedField{}
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if err := Unmarshal(y, &v, DisallowUnknownFields); err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if v.Field != "hello" {
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t.Errorf("v.Field=%v, want 'hello'", v.Field)
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}
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})
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t.Run("With unknown tagged field", func(t *testing.T) {
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y := []byte(`unknown: "hello"`)
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v := WithTaggedField{}
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err := Unmarshal(y, &v, DisallowUnknownFields)
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if err == nil {
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t.Errorf("want error because of unknown field, got <nil>: v=%#v", v)
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}
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})
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}
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func exampleUnknown() {
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type WithTaggedField struct {
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Field string `json:"field"`
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}
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y := []byte(`unknown: "hello"`)
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v := WithTaggedField{}
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fmt.Printf("%v\n", Unmarshal(y, &v, DisallowUnknownFields))
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// Ouptut:
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// unmarshaling JSON: while decoding JSON: json: unknown field "unknown"
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}
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