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package json_test
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import (
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"reflect"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/libs/json"
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)
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func TestUnmarshal(t *testing.T) {
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i64Nil := (*int64)(nil)
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str := "string"
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strPtr := &str
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structNil := (*Struct)(nil)
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i32 := int32(32)
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i64 := int64(64)
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testcases := map[string]struct {
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json string
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value interface{}
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err bool
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}{
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"bool true": {"true", true, false},
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"bool false": {"false", false, false},
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"float32": {"3.14", float32(3.14), false},
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"float64": {"3.14", float64(3.14), false},
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"int32": {`32`, int32(32), false},
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"int32 string": {`"32"`, int32(32), true},
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"int32 ptr": {`32`, &i32, false},
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"int64": {`"64"`, int64(64), false},
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"int64 noend": {`"64`, int64(64), true},
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"int64 number": {`64`, int64(64), true},
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"int64 ptr": {`"64"`, &i64, false},
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"int64 ptr nil": {`null`, i64Nil, false},
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"string": {`"foo"`, "foo", false},
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"string noend": {`"foo`, "foo", true},
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"string ptr": {`"string"`, &str, false},
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"slice byte": {`"AQID"`, []byte{1, 2, 3}, false},
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"slice bytes": {`["AQID"]`, [][]byte{{1, 2, 3}}, false},
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"slice int32": {`[1,2,3]`, []int32{1, 2, 3}, false},
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"slice int64": {`["1","2","3"]`, []int64{1, 2, 3}, false},
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"slice int64 number": {`[1,2,3]`, []int64{1, 2, 3}, true},
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"slice int64 ptr": {`["64"]`, []*int64{&i64}, false},
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"slice int64 empty": {`[]`, []int64(nil), false},
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"slice int64 null": {`null`, []int64(nil), false},
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"array byte": {`"AQID"`, [3]byte{1, 2, 3}, false},
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"array byte large": {`"AQID"`, [4]byte{1, 2, 3, 4}, true},
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"array byte small": {`"AQID"`, [2]byte{1, 2}, true},
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"array int32": {`[1,2,3]`, [3]int32{1, 2, 3}, false},
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"array int64": {`["1","2","3"]`, [3]int64{1, 2, 3}, false},
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"array int64 number": {`[1,2,3]`, [3]int64{1, 2, 3}, true},
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"array int64 large": {`["1","2","3"]`, [4]int64{1, 2, 3, 4}, true},
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"array int64 small": {`["1","2","3"]`, [2]int64{1, 2}, true},
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"map bytes": {`{"b":"AQID"}`, map[string][]byte{"b": {1, 2, 3}}, false},
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"map int32": {`{"a":1,"b":2}`, map[string]int32{"a": 1, "b": 2}, false},
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"map int64": {`{"a":"1","b":"2"}`, map[string]int64{"a": 1, "b": 2}, false},
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"map int64 empty": {`{}`, map[string]int64{}, false},
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"map int64 null": {`null`, map[string]int64(nil), false},
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"map int key": {`{}`, map[int]int{}, true},
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"time": {`"2020-06-03T17:35:30Z"`, time.Date(2020, 6, 3, 17, 35, 30, 0, time.UTC), false},
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"time non-utc": {`"2020-06-03T17:35:30+02:00"`, time.Time{}, true},
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"time nozone": {`"2020-06-03T17:35:30"`, time.Time{}, true},
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"car": {`{"type":"vehicle/car","value":{"Wheels":4}}`, Car{Wheels: 4}, false},
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"car ptr": {`{"type":"vehicle/car","value":{"Wheels":4}}`, &Car{Wheels: 4}, false},
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"car iface": {`{"type":"vehicle/car","value":{"Wheels":4}}`, Vehicle(&Car{Wheels: 4}), false},
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"boat": {`{"type":"vehicle/boat","value":{"Sail":true}}`, Boat{Sail: true}, false},
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"boat ptr": {`{"type":"vehicle/boat","value":{"Sail":true}}`, &Boat{Sail: true}, false},
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"boat iface": {`{"type":"vehicle/boat","value":{"Sail":true}}`, Vehicle(Boat{Sail: true}), false},
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"boat into car": {`{"type":"vehicle/boat","value":{"Sail":true}}`, Car{}, true},
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"boat into car iface": {`{"type":"vehicle/boat","value":{"Sail":true}}`, Vehicle(&Car{}), true},
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"shoes": {`{"type":"vehicle/shoes","value":{"Soles":"rubber"}}`, Car{}, true},
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"shoes ptr": {`{"type":"vehicle/shoes","value":{"Soles":"rubber"}}`, &Car{}, true},
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"shoes iface": {`{"type":"vehicle/shoes","value":{"Soles":"rubbes"}}`, Vehicle(&Car{}), true},
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"key public": {`{"type":"key/public","value":"AQIDBAUGBwg="}`, PublicKey{1, 2, 3, 4, 5, 6, 7, 8}, false},
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"key wrong": {`{"type":"key/public","value":"AQIDBAUGBwg="}`, PrivateKey{1, 2, 3, 4, 5, 6, 7, 8}, true},
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"key into car": {`{"type":"key/public","value":"AQIDBAUGBwg="}`, Vehicle(&Car{}), true},
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"tags": {
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`{"name":"name","OmitEmpty":"foo","Hidden":"bar","tags":{"name":"child"}}`,
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Tags{JSONName: "name", OmitEmpty: "foo", Tags: &Tags{JSONName: "child"}},
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false,
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},
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"tags ptr": {
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`{"name":"name","OmitEmpty":"foo","tags":null}`,
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&Tags{JSONName: "name", OmitEmpty: "foo"},
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false,
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},
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"tags real name": {`{"JSONName":"name"}`, Tags{}, false},
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"struct": {
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`{
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"Bool":true, "Float64":3.14, "Int32":32, "Int64":"64", "Int64Ptr":"64",
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"String":"foo", "StringPtrPtr": "string", "Bytes":"AQID",
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"Time":"2020-06-02T16:05:13.004346374Z",
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"Car":{"Wheels":4},
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"Boat":{"Sail":true},
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"Vehicles":[
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{"type":"vehicle/car","value":{"Wheels":4}},
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{"type":"vehicle/boat","value":{"Sail":true}}
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],
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"Child":{
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"Bool":false, "Float64":0, "Int32":0, "Int64":"0", "Int64Ptr":null,
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"String":"child", "StringPtrPtr":null, "Bytes":null,
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"Time":"0001-01-01T00:00:00Z",
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"Car":null, "Boat":{"Sail":false}, "Vehicles":null, "Child":null
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},
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"private": "foo", "unknown": "bar"
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}`,
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Struct{
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Bool: true, Float64: 3.14, Int32: 32, Int64: 64, Int64Ptr: &i64,
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String: "foo", StringPtrPtr: &strPtr, Bytes: []byte{1, 2, 3},
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Time: time.Date(2020, 6, 2, 16, 5, 13, 4346374, time.UTC),
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Car: &Car{Wheels: 4}, Boat: Boat{Sail: true}, Vehicles: []Vehicle{
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Vehicle(&Car{Wheels: 4}),
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Vehicle(Boat{Sail: true}),
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},
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Child: &Struct{Bool: false, String: "child"},
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},
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false,
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},
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"struct key into vehicle": {`{"Vehicles":[
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{"type":"vehicle/car","value":{"Wheels":4}},
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{"type":"key/public","value":"MTIzNDU2Nzg="}
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]}`, Struct{}, true},
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"struct ptr null": {`null`, structNil, false},
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"custom value": {`{"Value":"foo"}`, CustomValue{}, false},
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"custom ptr": {`"foo"`, &CustomPtr{Value: "custom"}, false},
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"custom ptr value": {`"foo"`, CustomPtr{Value: "custom"}, false},
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"invalid type": {`"foo"`, Struct{}, true},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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// Create a target variable as a pointer to the zero value of the tc.value type,
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// and wrap it in an empty interface. Decode into that interface.
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target := reflect.New(reflect.TypeOf(tc.value)).Interface()
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err := json.Unmarshal([]byte(tc.json), target)
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if tc.err {
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require.Error(t, err)
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return
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}
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require.NoError(t, err)
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// Unwrap the target pointer and get the value behind the interface.
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actual := reflect.ValueOf(target).Elem().Interface()
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assert.Equal(t, tc.value, actual)
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})
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}
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}
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