json_codec_test.go

package orderedmap

import (
	"testing"
	"encoding/json"
	"fmt"
	"log"
)

func TestBlankMarshalJSON(t *testing.T) {
	o := New()
	// blank map
	b, err := json.Marshal(o)
	if err != nil {
		t.Error("Marshalling blank map to json", err)
	}
	s := string(b)
	// check json is correctly ordered
	if s != `{}` {
		t.Error("JSON Marshaling blank map value is incorrect", s)
	}
	// convert to indented json
	bi, err := json.MarshalIndent(o, "", "  ")
	if err != nil {
		t.Error("Marshalling indented json for blank map", err)
	}
	si := string(bi)
	ei := `{}`
	if si != ei {
		fmt.Println(ei)
		fmt.Println(si)
		t.Error("JSON MarshalIndent blank map value is incorrect", si)
	}
}

func TestMarshalJSON(t *testing.T) {
	o := New()
	// number
	o.Set("number", 3)
	// string
	o.Set("string", "x")
	// new value keeps key in old position
	o.Set("number", 4)
	// keys not sorted alphabetically
	o.Set("z", 1)
	o.Set("a", 2)
	o.Set("b", 3)
	// slice
	o.Set("slice", []interface{}{
		"1",
		1,
	})
	// orderedmap
	v := New()
	v.Set("e", 1)
	v.Set("a", 2)
	o.Set("orderedmap", v)
	// double quote in key
	o.Set(`test"ing`, 9)
	// convert to json
	b, err := json.Marshal(o)
	if err != nil {
		t.Error("Marshalling json", err)
	}
	s := string(b)
	// check json is correctly ordered
	if s != `{"number":4,"string":"x","z":1,"a":2,"b":3,"slice":["1",1],"orderedmap":{"e":1,"a":2},"test\"ing":9}` {
		t.Error("JSON Marshal value is incorrect", s)
	}
	// convert to indented json
	bi, err := json.MarshalIndent(o, "", "  ")
	if err != nil {
		t.Error("Marshalling indented json", err)
	}
	si := string(bi)
	ei := `{
  "number": 4,
  "string": "x",
  "z": 1,
  "a": 2,
  "b": 3,
  "slice": [
    "1",
    1
  ],
  "orderedmap": {
    "e": 1,
    "a": 2
  },
  "test\"ing": 9
}`
	if si != ei {
		fmt.Println(ei)
		fmt.Println(si)
		t.Error("JSON MarshalIndent value is incorrect", si)
	}
}

func TestUnmarshalJSON(t *testing.T) {
	s := `{
  "number": 4,
  "string": "x",
  "z": 1,
  "a": "should not break with unclosed { character in value",
  "b": 3,
  "slice": [
    "1",
    1
  ],
  "orderedmap": {
    "e": 1,
    "a { nested key with brace": "with a }}}} }} {{{ brace value",
    "after": {
      "link": "test {{{ with even deeper nested braces }"
    }
  },
  "test\"ing": 9,
  "after": 1,
  "multitype_array": [
    "test",
    1,
    {
      "map": "obj",
      "it": 5,
      ":colon in key": "colon: in value"
    },
    [
      {
        "inner": "map"
      }
    ]
  ],
  "should not break with { character in key": 1
}`
	om := New()
	err := json.Unmarshal([]byte(s), &om)
	if err != nil {
		t.Error("YAML Unmarshal error", err)
	}
	sout, err := json.MarshalIndent(&om, "", "  ")
	if err != nil {
		t.Error("YAML Marshal error", err)
	}
	if string(sout) != s {
		log.Println(string(sout))
		t.Error("YAML Marshal/Unmarshal doesn't match")
	}

	// Check the root keys
	expectedKeys := []string{
		"number",
		"string",
		"z",
		"a",
		"b",
		"slice",
		"orderedmap",
		"test\"ing",
		"after",
		"multitype_array",
		"should not break with { character in key",
	}

	iter := om.IterFunc()
	i := 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}
	// Check nested maps are converted to orderedmaps
	// nested 1 level deep
	expectedKeys = []string{
		"e",
		"a { nested key with brace",
		"after",
	}
	vi, ok := om.Get("orderedmap")
	if !ok {
		t.Error("Missing key for nested map 1 deep")
	}
	v := vi.(OrderedMap)
	iter = v.IterFunc()
	i = 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}
	// nested 2 levels deep
	expectedKeys = []string{
		"link",
	}
	vi, ok = v.Get("after")
	if !ok {
		t.Error("Missing key for nested map 2 deep")
	}
	v = vi.(OrderedMap)
	iter = v.IterFunc()
	i = 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}
	// multitype array
	expectedKeys = []string{
		"map",
		"it",
		":colon in key",
	}
	vislice, ok := om.Get("multitype_array")
	if !ok {
		t.Error("Missing key for multitype array")
	}
	vslice := vislice.([]interface{})
	vmap := vslice[2].(OrderedMap)
	iter = vmap.IterFunc()
	i = 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}

	expectedKeys = []string{"inner"}
	vinnerslice := vslice[3].([]interface{})
	vinnermap := vinnerslice[0].(OrderedMap)
	iter = vinnermap.IterFunc()
	i = 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}
}

func TestUnmarshalJSONSpecialChars(t *testing.T) {
	s := `{ " \\\\\\\\\\\\ "  : { "\\\\\\" : "\\\\\"\\" }, "\\":  " \\\\ test " }`
	o := New()
	err := json.Unmarshal([]byte(s), &o)
	if err != nil {
		t.Error("JSON Unmarshal error with special chars", err)
	}
}

func TestUnmarshalJSONArrayOfMaps(t *testing.T) {
	s := `
{
  "name": "test",
  "percent": 6,
  "breakdown": [
    {
      "name": "a",
      "percent": 0.9
    },
    {
      "name": "b",
      "percent": 0.9
    },
    {
      "name": "d",
      "percent": 0.4
    },
    {
      "name": "e",
      "percent": 2.7
    }
  ]
}
`
	om := New()
	err := json.Unmarshal([]byte(s), &om)
	if err != nil {
		t.Error("JSON Unmarshal error", err)
	}
	// Check the root keys
	expectedKeys := []string{
		"name",
		"percent",
		"breakdown",
	}
	iter := om.IterFunc()
	i := 0
	for kv, ok := iter(); ok; kv, ok = iter() {
		if kv.Key != expectedKeys[i] {
			t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
		}
		i++
	}
	// Check nested maps are converted to orderedmaps
	// nested 1 level deep
	expectedKeys = []string{
		"name",
		"percent",
	}
	vi, ok := om.Get("breakdown")
	if !ok {
		t.Error("Missing key for nested map 1 deep")
	}
	vs := vi.([]interface{})
	for _, vInterface := range vs {
		v := vInterface.(OrderedMap)
		iter := v.IterFunc()
		i := 0
		for kv, ok := iter(); ok; kv, ok = iter() {
			if kv.Key != expectedKeys[i] {
				t.Error("Unmarshal root key order", i, kv.Key, "!=", expectedKeys[i])
			}
			i++
		}
	}
}