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// Copyright (c) 2021, Maxime Soulé
// All rights reserved.
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
package json_test
import (
"bytes"
"errors"
"math"
"testing"
"github.com/maxatome/go-testdeep/internal/json"
"github.com/maxatome/go-testdeep/internal/test"
)
type marshalTest bool
func (m marshalTest) MarshalJSON() ([]byte, error) {
if m {
return []byte("marshal\ntest"), nil
}
return nil, errors.New("marshalling error")
}
func TestMarshal(t *testing.T) {
for i, tst := range []struct {
in any
expected string
}{
{
in: float64(123),
expected: "123",
},
{
in: math.NaN(),
expected: "NaN",
},
{
in: math.Inf(1),
expected: "+Inf",
},
{
in: 1e-7,
expected: "1e-7",
},
{
in: 1e22,
expected: "1e+22",
},
{
in: "foobar",
expected: `"foobar"`,
},
{
in: true,
expected: `true`,
},
{
in: false,
expected: `false`,
},
{
in: nil,
expected: `null`,
},
{
in: (map[string]any)(nil),
expected: `null`,
},
{
in: map[string]any{},
expected: `{}`,
},
{
in: map[string]any{"z": float64(123), "a": float64(890)},
expected: `{
"a": 890,
"z": 123
}`,
},
{
in: map[string]any{
"label": map[string]any{"age": float64(12), "name": "Bob"},
"zip": float64(456),
},
expected: `{
"label": {
"age": 12,
"name": "Bob"
},
"zip": 456
}`,
},
{
in: ([]any)(nil),
expected: `null`,
},
{
in: []any{},
expected: `[]`,
},
{
in: []any{"a", float64(123)},
expected: `[
"a",
123
]`,
},
{
in: marshalTest(true),
expected: "marshal\ntest",
},
{
in: []any{float64(1), marshalTest(true), float64(3)},
expected: `[
1,
marshal
test,
3
]`,
},
} {
b, err := json.Marshal(tst.in, 0)
test.NoError(t, err, "#%d", i)
test.EqualStr(t, string(b), tst.expected, "#%d", i)
}
for i, in := range []any{
marshalTest(false),
map[string]any{"z": float64(123), "a": marshalTest(false)},
[]any{"a", marshalTest(false)},
} {
_, err := json.Marshal(in, 0)
if test.Error(t, err, "#%d", i) {
test.EqualStr(t, err.Error(), "marshalling error", "#%d", i)
}
}
_, err := json.Marshal(123, 0)
if test.Error(t, err) {
test.EqualStr(t, err.Error(), "Cannot marshal int")
}
}
func TestAppendMarshal(t *testing.T) {
var buf bytes.Buffer
buf.WriteString("<<")
err := json.AppendMarshal(&buf, "foo", 0)
test.NoError(t, err)
buf.WriteString(">>")
test.EqualStr(t, buf.String(), `<<"foo">>`)
}
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