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