1 files changed, 78 insertions, 0 deletions
diff --git a/compat/json/compat_test.go b/compat/json/compat_test.go
index 29a8b37..df9d387 100644
--- a/compat/json/compat_test.go
+++ b/compat/json/compat_test.go
@@ -6,6 +6,8 @@ package json
 
 import (
 	"bytes"
+	"reflect"
+	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -161,3 +163,79 @@ func TestCompatMarshal(t *testing.T) {
 		})
 	}
 }
+
+func TestCompatUnmarshal(t *testing.T) {
+	t.Parallel()
+	type testcase struct {
+		In     string
+		InPtr  any
+		ExpOut any
+		ExpErr string
+	}
+	testcases := map[string]testcase{
+		"empty-obj":            {In: `{}`, ExpOut: map[string]any{}},
+		"partial-obj":          {In: `{"foo":"bar",`, ExpOut: nil, ExpErr: `unexpected end of JSON input`},
+		"existing-obj":         {In: `{"baz":"quz"}`, InPtr: &map[string]string{"foo": "bar"}, ExpOut: map[string]string{"foo": "bar", "baz": "quz"}},
+		"existing-obj-partial": {In: `{"baz":"quz"`, InPtr: &map[string]string{"foo": "bar"}, ExpOut: map[string]string{"foo": "bar"}, ExpErr: "unexpected end of JSON input"},
+		"empty-ary":            {In: `[]`, ExpOut: []any{}},
+		"two-objs":             {In: `{} {}`, ExpOut: nil, ExpErr: `invalid character '{' after top-level value`},
+		"two-numbers1":         {In: `00`, ExpOut: nil, ExpErr: `invalid character '0' after top-level value`},
+		"two-numbers2":         {In: `1 2`, ExpOut: nil, ExpErr: `invalid character '2' after top-level value`},
+	}
+	for tcName, tc := range testcases {
+		tc := tc
+		t.Run(tcName, func(t *testing.T) {
+			t.Parallel()
+			ptr := tc.InPtr
+			if ptr == nil {
+				var out any
+				ptr = &out
+			}
+			err := Unmarshal([]byte(tc.In), ptr)
+			assert.Equal(t, tc.ExpOut, reflect.ValueOf(ptr).Elem().Interface())
+			if tc.ExpErr == "" {
+				assert.NoError(t, err)
+			} else {
+				assert.EqualError(t, err, tc.ExpErr)
+			}
+		})
+	}
+}
+
+func TestCompatDecode(t *testing.T) {
+	t.Parallel()
+	type testcase struct {
+		In     string
+		InPtr  any
+		ExpOut any
+		ExpErr string
+	}
+	testcases := map[string]testcase{
+		"empty-obj":            {In: `{}`, ExpOut: map[string]any{}},
+		"partial-obj":          {In: `{"foo":"bar",`, ExpOut: nil, ExpErr: `unexpected EOF`},
+		"existing-obj":         {In: `{"baz":"quz"}`, InPtr: &map[string]string{"foo": "bar"}, ExpOut: map[string]string{"foo": "bar", "baz": "quz"}},
+		"existing-obj-partial": {In: `{"baz":"quz"`, InPtr: &map[string]string{"foo": "bar"}, ExpOut: map[string]string{"foo": "bar"}, ExpErr: "unexpected EOF"},
+		"empty-ary":            {In: `[]`, ExpOut: []any{}},
+		"two-objs":             {In: `{} {}`, ExpOut: map[string]any{}},
+		"two-numbers1":         {In: `00`, ExpOut: float64(0)},
+		"two-numbers2":         {In: `1 2`, ExpOut: float64(1)},
+	}
+	for tcName, tc := range testcases {
+		tc := tc
+		t.Run(tcName, func(t *testing.T) {
+			t.Parallel()
+			ptr := tc.InPtr
+			if ptr == nil {
+				var out any
+				ptr = &out
+			}
+			err := NewDecoder(strings.NewReader(tc.In)).Decode(ptr)
+			assert.Equal(t, tc.ExpOut, reflect.ValueOf(ptr).Elem().Interface())
+			if tc.ExpErr == "" {
+				assert.NoError(t, err)
+			} else {
+				assert.EqualError(t, err, tc.ExpErr)
+			}
+		})
+	}
+}