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83 lines
2.0 KiB
83 lines
2.0 KiB
package jsontypes_test
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import (
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"testing"
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"github.com/tendermint/tendermint/internal/jsontypes"
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)
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type testType struct {
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Field string `json:"field"`
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}
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func (*testType) TypeTag() string { return "test/TaggedType" }
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func TestRoundTrip(t *testing.T) {
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const wantEncoded = `{"type":"test/TaggedType","value":{"field":"hello"}}`
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t.Run("MustRegisterOK", func(t *testing.T) {
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defer func() {
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if x := recover(); x != nil {
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t.Fatalf("Registration panicked: %v", x)
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}
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}()
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jsontypes.MustRegister((*testType)(nil))
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})
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t.Run("MustRegisterFail", func(t *testing.T) {
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defer func() {
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if x := recover(); x != nil {
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t.Logf("Got expected panic: %v", x)
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}
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}()
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jsontypes.MustRegister((*testType)(nil))
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t.Fatal("Registration should not have succeeded")
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})
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t.Run("MarshalNil", func(t *testing.T) {
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bits, err := jsontypes.Marshal(nil)
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if err != nil {
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t.Fatalf("Marshal failed: %v", err)
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}
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if got := string(bits); got != "null" {
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t.Errorf("Marshal nil: got %#q, want null", got)
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}
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})
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t.Run("RoundTrip", func(t *testing.T) {
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obj := testType{Field: "hello"}
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bits, err := jsontypes.Marshal(&obj)
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if err != nil {
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t.Fatalf("Marshal %T failed: %v", obj, err)
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}
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if got := string(bits); got != wantEncoded {
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t.Errorf("Marshal %T: got %#q, want %#q", obj, got, wantEncoded)
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}
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var cmp testType
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if err := jsontypes.Unmarshal(bits, &cmp); err != nil {
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t.Errorf("Unmarshal %#q failed: %v", string(bits), err)
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}
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if obj != cmp {
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t.Errorf("Unmarshal %#q: got %+v, want %+v", string(bits), cmp, obj)
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}
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})
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t.Run("Unregistered", func(t *testing.T) {
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obj := testType{Field: "hello"}
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bits, err := jsontypes.Marshal(&obj)
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if err != nil {
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t.Fatalf("Marshal %T failed: %v", obj, err)
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}
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if got := string(bits); got != wantEncoded {
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t.Errorf("Marshal %T: got %#q, want %#q", obj, got, wantEncoded)
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}
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var cmp struct {
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Field string `json:"field"`
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}
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if err := jsontypes.Unmarshal(bits, &cmp); err != nil {
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t.Errorf("Unmarshal %#q: got %+v, want %+v", string(bits), cmp, obj)
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}
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})
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}
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