mirror of
https://github.com/empayre/fleet.git
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91 lines
3.0 KiB
Go
91 lines
3.0 KiB
Go
package optjson
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import (
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"encoding/json"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestString(t *testing.T) {
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t.Run("plain string", func(t *testing.T) {
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cases := []struct {
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data string
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wantErr string
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wantRes String
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marshalAs string
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}{
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{`"foo"`, "", String{Set: true, Valid: true, Value: "foo"}, `"foo"`},
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{`""`, "", String{Set: true, Valid: true, Value: ""}, `""`},
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{`null`, "", String{Set: true, Valid: false, Value: ""}, `null`},
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{`123`, "cannot unmarshal number into Go value of type string", String{Set: true, Valid: false, Value: ""}, `null`},
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{`{"v": "foo"}`, "cannot unmarshal object into Go value of type string", String{Set: true, Valid: false, Value: ""}, `null`},
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}
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for _, c := range cases {
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t.Run(c.data, func(t *testing.T) {
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var s String
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err := json.Unmarshal([]byte(c.data), &s)
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if c.wantErr != "" {
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require.Error(t, err)
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require.ErrorContains(t, err, c.wantErr)
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} else {
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require.NoError(t, err)
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}
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require.Equal(t, c.wantRes, s)
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b, err := json.Marshal(s)
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require.NoError(t, err)
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require.Equal(t, c.marshalAs, string(b))
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})
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}
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})
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t.Run("struct", func(t *testing.T) {
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type N struct {
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S2 String `json:"s2"`
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}
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type T struct {
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I int `json:"i"`
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S String `json:"s"`
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N N `json:"n"`
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}
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cases := []struct {
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data string
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wantErr string
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wantRes T
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marshalAs string
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}{
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{`{}`, "", T{}, `{"i": 0, "s": null, "n": {"s2": null}}`},
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{`{"x": "nope"}`, "", T{}, `{"i": 0, "s": null, "n": {"s2": null}}`},
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{`{"i": 1, "s": "a"}`, "", T{I: 1, S: String{Set: true, Valid: true, Value: "a"}}, `{"i": 1, "s": "a", "n": {"s2": null}}`},
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{`{"i": 1, "s": null, "n": {}}`, "", T{I: 1, S: String{Set: true, Valid: false, Value: ""}}, `{"i": 1, "s": null, "n": {"s2": null}}`},
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{`{"i": 1, "s": "a", "n": {"s2": "b"}}`, "", T{I: 1, S: String{Set: true, Valid: true, Value: "a"}, N: N{S2: String{Set: true, Valid: true, Value: "b"}}}, `{"i": 1, "s": "a", "n": {"s2": "b"}}`},
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{`{"i": 1, "s": "a", "n": {"s2": null}}`, "", T{I: 1, S: String{Set: true, Valid: true, Value: "a"}, N: N{S2: String{Set: true, Valid: false, Value: ""}}}, `{"i": 1, "s": "a", "n": {"s2": null}}`},
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{`{"i": 1, "s": true}`, "cannot unmarshal bool into Go struct", T{I: 1, S: String{Set: true, Valid: false, Value: ""}}, `{"i": 1, "s": null, "n": {"s2": null}}`},
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{`{"i": 1, "n": {"s2": 123}}`, "cannot unmarshal number into Go struct", T{I: 1, N: N{S2: String{Set: true, Valid: false, Value: ""}}}, `{"i": 1, "s": null, "n": {"s2": null}}`},
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}
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for _, c := range cases {
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t.Run(c.data, func(t *testing.T) {
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var tt T
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err := json.Unmarshal([]byte(c.data), &tt)
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if c.wantErr != "" {
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require.Error(t, err)
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require.ErrorContains(t, err, c.wantErr)
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} else {
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require.NoError(t, err)
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}
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require.Equal(t, c.wantRes, tt)
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b, err := json.Marshal(tt)
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require.NoError(t, err)
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require.JSONEq(t, c.marshalAs, string(b))
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})
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}
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})
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}
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