summaryrefslogtreecommitdiff
path: root/libgo/go/encoding/json/encode_test.go
diff options
context:
space:
mode:
Diffstat (limited to 'libgo/go/encoding/json/encode_test.go')
-rw-r--r--libgo/go/encoding/json/encode_test.go398
1 files changed, 348 insertions, 50 deletions
diff --git a/libgo/go/encoding/json/encode_test.go b/libgo/go/encoding/json/encode_test.go
index c00491e00c..6d574cfc47 100644
--- a/libgo/go/encoding/json/encode_test.go
+++ b/libgo/go/encoding/json/encode_test.go
@@ -6,8 +6,12 @@ package json
import (
"bytes"
+ "fmt"
+ "log"
"math"
"reflect"
+ "regexp"
+ "strconv"
"testing"
"unicode"
)
@@ -289,6 +293,44 @@ type BugX struct {
BugB
}
+// Issue 16042. Even if a nil interface value is passed in
+// as long as it implements MarshalJSON, it should be marshaled.
+type nilMarshaler string
+
+func (nm *nilMarshaler) MarshalJSON() ([]byte, error) {
+ if nm == nil {
+ return Marshal("0zenil0")
+ }
+ return Marshal("zenil:" + string(*nm))
+}
+
+// Issue 16042.
+func TestNilMarshal(t *testing.T) {
+ testCases := []struct {
+ v interface{}
+ want string
+ }{
+ {v: nil, want: `null`},
+ {v: new(float64), want: `0`},
+ {v: []interface{}(nil), want: `null`},
+ {v: []string(nil), want: `null`},
+ {v: map[string]string(nil), want: `null`},
+ {v: []byte(nil), want: `null`},
+ {v: struct{ M string }{"gopher"}, want: `{"M":"gopher"}`},
+ {v: struct{ M Marshaler }{}, want: `{"M":null}`},
+ {v: struct{ M Marshaler }{(*nilMarshaler)(nil)}, want: `{"M":"0zenil0"}`},
+ {v: struct{ M interface{} }{(*nilMarshaler)(nil)}, want: `{"M":null}`},
+ }
+
+ for _, tt := range testCases {
+ out, err := Marshal(tt.v)
+ if err != nil || string(out) != tt.want {
+ t.Errorf("Marshal(%#v) = %#q, %#v, want %#q, nil", tt.v, out, err, tt.want)
+ continue
+ }
+ }
+}
+
// Issue 5245.
func TestEmbeddedBug(t *testing.T) {
v := BugB{
@@ -374,66 +416,47 @@ func TestDuplicatedFieldDisappears(t *testing.T) {
}
func TestStringBytes(t *testing.T) {
+ t.Parallel()
// Test that encodeState.stringBytes and encodeState.string use the same encoding.
- es := &encodeState{}
var r []rune
for i := '\u0000'; i <= unicode.MaxRune; i++ {
r = append(r, i)
}
s := string(r) + "\xff\xff\xffhello" // some invalid UTF-8 too
- es.string(s)
- esBytes := &encodeState{}
- esBytes.stringBytes([]byte(s))
+ for _, escapeHTML := range []bool{true, false} {
+ es := &encodeState{}
+ es.string(s, escapeHTML)
- enc := es.Buffer.String()
- encBytes := esBytes.Buffer.String()
- if enc != encBytes {
- i := 0
- for i < len(enc) && i < len(encBytes) && enc[i] == encBytes[i] {
- i++
- }
- enc = enc[i:]
- encBytes = encBytes[i:]
- i = 0
- for i < len(enc) && i < len(encBytes) && enc[len(enc)-i-1] == encBytes[len(encBytes)-i-1] {
- i++
- }
- enc = enc[:len(enc)-i]
- encBytes = encBytes[:len(encBytes)-i]
-
- if len(enc) > 20 {
- enc = enc[:20] + "..."
- }
- if len(encBytes) > 20 {
- encBytes = encBytes[:20] + "..."
- }
-
- t.Errorf("encodings differ at %#q vs %#q", enc, encBytes)
- }
-}
-
-func TestIssue6458(t *testing.T) {
- type Foo struct {
- M RawMessage
- }
- x := Foo{RawMessage(`"foo"`)}
+ esBytes := &encodeState{}
+ esBytes.stringBytes([]byte(s), escapeHTML)
- b, err := Marshal(&x)
- if err != nil {
- t.Fatal(err)
- }
- if want := `{"M":"foo"}`; string(b) != want {
- t.Errorf("Marshal(&x) = %#q; want %#q", b, want)
- }
+ enc := es.Buffer.String()
+ encBytes := esBytes.Buffer.String()
+ if enc != encBytes {
+ i := 0
+ for i < len(enc) && i < len(encBytes) && enc[i] == encBytes[i] {
+ i++
+ }
+ enc = enc[i:]
+ encBytes = encBytes[i:]
+ i = 0
+ for i < len(enc) && i < len(encBytes) && enc[len(enc)-i-1] == encBytes[len(encBytes)-i-1] {
+ i++
+ }
+ enc = enc[:len(enc)-i]
+ encBytes = encBytes[:len(encBytes)-i]
- b, err = Marshal(x)
- if err != nil {
- t.Fatal(err)
- }
+ if len(enc) > 20 {
+ enc = enc[:20] + "..."
+ }
+ if len(encBytes) > 20 {
+ encBytes = encBytes[:20] + "..."
+ }
- if want := `{"M":"ImZvbyI="}`; string(b) != want {
- t.Errorf("Marshal(x) = %#q; want %#q", b, want)
+ t.Errorf("with escapeHTML=%t, encodings differ at %#q vs %#q",
+ escapeHTML, enc, encBytes)
+ }
}
}
@@ -478,7 +501,7 @@ func TestEncodePointerString(t *testing.T) {
t.Fatalf("Unmarshal: %v", err)
}
if back.N == nil {
- t.Fatalf("Unmarshalled nil N field")
+ t.Fatalf("Unmarshaled nil N field")
}
if *back.N != 42 {
t.Fatalf("*N = %d; want 42", *back.N)
@@ -536,3 +559,278 @@ func TestEncodeString(t *testing.T) {
}
}
}
+
+type jsonbyte byte
+
+func (b jsonbyte) MarshalJSON() ([]byte, error) { return tenc(`{"JB":%d}`, b) }
+
+type textbyte byte
+
+func (b textbyte) MarshalText() ([]byte, error) { return tenc(`TB:%d`, b) }
+
+type jsonint int
+
+func (i jsonint) MarshalJSON() ([]byte, error) { return tenc(`{"JI":%d}`, i) }
+
+type textint int
+
+func (i textint) MarshalText() ([]byte, error) { return tenc(`TI:%d`, i) }
+
+func tenc(format string, a ...interface{}) ([]byte, error) {
+ var buf bytes.Buffer
+ fmt.Fprintf(&buf, format, a...)
+ return buf.Bytes(), nil
+}
+
+// Issue 13783
+func TestEncodeBytekind(t *testing.T) {
+ testdata := []struct {
+ data interface{}
+ want string
+ }{
+ {byte(7), "7"},
+ {jsonbyte(7), `{"JB":7}`},
+ {textbyte(4), `"TB:4"`},
+ {jsonint(5), `{"JI":5}`},
+ {textint(1), `"TI:1"`},
+ {[]byte{0, 1}, `"AAE="`},
+ {[]jsonbyte{0, 1}, `[{"JB":0},{"JB":1}]`},
+ {[][]jsonbyte{{0, 1}, {3}}, `[[{"JB":0},{"JB":1}],[{"JB":3}]]`},
+ {[]textbyte{2, 3}, `["TB:2","TB:3"]`},
+ {[]jsonint{5, 4}, `[{"JI":5},{"JI":4}]`},
+ {[]textint{9, 3}, `["TI:9","TI:3"]`},
+ {[]int{9, 3}, `[9,3]`},
+ }
+ for _, d := range testdata {
+ js, err := Marshal(d.data)
+ if err != nil {
+ t.Error(err)
+ continue
+ }
+ got, want := string(js), d.want
+ if got != want {
+ t.Errorf("got %s, want %s", got, want)
+ }
+ }
+}
+
+func TestTextMarshalerMapKeysAreSorted(t *testing.T) {
+ b, err := Marshal(map[unmarshalerText]int{
+ {"x", "y"}: 1,
+ {"y", "x"}: 2,
+ {"a", "z"}: 3,
+ {"z", "a"}: 4,
+ })
+ if err != nil {
+ t.Fatalf("Failed to Marshal text.Marshaler: %v", err)
+ }
+ const want = `{"a:z":3,"x:y":1,"y:x":2,"z:a":4}`
+ if string(b) != want {
+ t.Errorf("Marshal map with text.Marshaler keys: got %#q, want %#q", b, want)
+ }
+}
+
+var re = regexp.MustCompile
+
+// syntactic checks on form of marshaled floating point numbers.
+var badFloatREs = []*regexp.Regexp{
+ re(`p`), // no binary exponential notation
+ re(`^\+`), // no leading + sign
+ re(`^-?0[^.]`), // no unnecessary leading zeros
+ re(`^-?\.`), // leading zero required before decimal point
+ re(`\.(e|$)`), // no trailing decimal
+ re(`\.[0-9]+0(e|$)`), // no trailing zero in fraction
+ re(`^-?(0|[0-9]{2,})\..*e`), // exponential notation must have normalized mantissa
+ re(`e[0-9]`), // positive exponent must be signed
+ re(`e[+-]0`), // exponent must not have leading zeros
+ re(`e-[1-6]$`), // not tiny enough for exponential notation
+ re(`e+(.|1.|20)$`), // not big enough for exponential notation
+ re(`^-?0\.0000000`), // too tiny, should use exponential notation
+ re(`^-?[0-9]{22}`), // too big, should use exponential notation
+ re(`[1-9][0-9]{16}[1-9]`), // too many significant digits in integer
+ re(`[1-9][0-9.]{17}[1-9]`), // too many significant digits in decimal
+ // below here for float32 only
+ re(`[1-9][0-9]{8}[1-9]`), // too many significant digits in integer
+ re(`[1-9][0-9.]{9}[1-9]`), // too many significant digits in decimal
+}
+
+func TestMarshalFloat(t *testing.T) {
+ t.Parallel()
+ nfail := 0
+ test := func(f float64, bits int) {
+ vf := interface{}(f)
+ if bits == 32 {
+ f = float64(float32(f)) // round
+ vf = float32(f)
+ }
+ bout, err := Marshal(vf)
+ if err != nil {
+ t.Errorf("Marshal(%T(%g)): %v", vf, vf, err)
+ nfail++
+ return
+ }
+ out := string(bout)
+
+ // result must convert back to the same float
+ g, err := strconv.ParseFloat(out, bits)
+ if err != nil {
+ t.Errorf("Marshal(%T(%g)) = %q, cannot parse back: %v", vf, vf, out, err)
+ nfail++
+ return
+ }
+ if f != g || fmt.Sprint(f) != fmt.Sprint(g) { // fmt.Sprint handles ±0
+ t.Errorf("Marshal(%T(%g)) = %q (is %g, not %g)", vf, vf, out, float32(g), vf)
+ nfail++
+ return
+ }
+
+ bad := badFloatREs
+ if bits == 64 {
+ bad = bad[:len(bad)-2]
+ }
+ for _, re := range bad {
+ if re.MatchString(out) {
+ t.Errorf("Marshal(%T(%g)) = %q, must not match /%s/", vf, vf, out, re)
+ nfail++
+ return
+ }
+ }
+ }
+
+ var (
+ bigger = math.Inf(+1)
+ smaller = math.Inf(-1)
+ )
+
+ var digits = "1.2345678901234567890123"
+ for i := len(digits); i >= 2; i-- {
+ for exp := -30; exp <= 30; exp++ {
+ for _, sign := range "+-" {
+ for bits := 32; bits <= 64; bits += 32 {
+ s := fmt.Sprintf("%c%se%d", sign, digits[:i], exp)
+ f, err := strconv.ParseFloat(s, bits)
+ if err != nil {
+ log.Fatal(err)
+ }
+ next := math.Nextafter
+ if bits == 32 {
+ next = func(g, h float64) float64 {
+ return float64(math.Nextafter32(float32(g), float32(h)))
+ }
+ }
+ test(f, bits)
+ test(next(f, bigger), bits)
+ test(next(f, smaller), bits)
+ if nfail > 50 {
+ t.Fatalf("stopping test early")
+ }
+ }
+ }
+ }
+ }
+ test(0, 64)
+ test(math.Copysign(0, -1), 64)
+ test(0, 32)
+ test(math.Copysign(0, -1), 32)
+}
+
+func TestMarshalRawMessageValue(t *testing.T) {
+ type (
+ T1 struct {
+ M RawMessage `json:",omitempty"`
+ }
+ T2 struct {
+ M *RawMessage `json:",omitempty"`
+ }
+ )
+
+ var (
+ rawNil = RawMessage(nil)
+ rawEmpty = RawMessage([]byte{})
+ rawText = RawMessage([]byte(`"foo"`))
+ )
+
+ tests := []struct {
+ in interface{}
+ want string
+ ok bool
+ }{
+ // Test with nil RawMessage.
+ {rawNil, "null", true},
+ {&rawNil, "null", true},
+ {[]interface{}{rawNil}, "[null]", true},
+ {&[]interface{}{rawNil}, "[null]", true},
+ {[]interface{}{&rawNil}, "[null]", true},
+ {&[]interface{}{&rawNil}, "[null]", true},
+ {struct{ M RawMessage }{rawNil}, `{"M":null}`, true},
+ {&struct{ M RawMessage }{rawNil}, `{"M":null}`, true},
+ {struct{ M *RawMessage }{&rawNil}, `{"M":null}`, true},
+ {&struct{ M *RawMessage }{&rawNil}, `{"M":null}`, true},
+ {map[string]interface{}{"M": rawNil}, `{"M":null}`, true},
+ {&map[string]interface{}{"M": rawNil}, `{"M":null}`, true},
+ {map[string]interface{}{"M": &rawNil}, `{"M":null}`, true},
+ {&map[string]interface{}{"M": &rawNil}, `{"M":null}`, true},
+ {T1{rawNil}, "{}", true},
+ {T2{&rawNil}, `{"M":null}`, true},
+ {&T1{rawNil}, "{}", true},
+ {&T2{&rawNil}, `{"M":null}`, true},
+
+ // Test with empty, but non-nil, RawMessage.
+ {rawEmpty, "", false},
+ {&rawEmpty, "", false},
+ {[]interface{}{rawEmpty}, "", false},
+ {&[]interface{}{rawEmpty}, "", false},
+ {[]interface{}{&rawEmpty}, "", false},
+ {&[]interface{}{&rawEmpty}, "", false},
+ {struct{ X RawMessage }{rawEmpty}, "", false},
+ {&struct{ X RawMessage }{rawEmpty}, "", false},
+ {struct{ X *RawMessage }{&rawEmpty}, "", false},
+ {&struct{ X *RawMessage }{&rawEmpty}, "", false},
+ {map[string]interface{}{"nil": rawEmpty}, "", false},
+ {&map[string]interface{}{"nil": rawEmpty}, "", false},
+ {map[string]interface{}{"nil": &rawEmpty}, "", false},
+ {&map[string]interface{}{"nil": &rawEmpty}, "", false},
+ {T1{rawEmpty}, "{}", true},
+ {T2{&rawEmpty}, "", false},
+ {&T1{rawEmpty}, "{}", true},
+ {&T2{&rawEmpty}, "", false},
+
+ // Test with RawMessage with some text.
+ //
+ // The tests below marked with Issue6458 used to generate "ImZvbyI=" instead "foo".
+ // This behavior was intentionally changed in Go 1.8.
+ // See https://github.com/golang/go/issues/14493#issuecomment-255857318
+ {rawText, `"foo"`, true}, // Issue6458
+ {&rawText, `"foo"`, true},
+ {[]interface{}{rawText}, `["foo"]`, true}, // Issue6458
+ {&[]interface{}{rawText}, `["foo"]`, true}, // Issue6458
+ {[]interface{}{&rawText}, `["foo"]`, true},
+ {&[]interface{}{&rawText}, `["foo"]`, true},
+ {struct{ M RawMessage }{rawText}, `{"M":"foo"}`, true}, // Issue6458
+ {&struct{ M RawMessage }{rawText}, `{"M":"foo"}`, true},
+ {struct{ M *RawMessage }{&rawText}, `{"M":"foo"}`, true},
+ {&struct{ M *RawMessage }{&rawText}, `{"M":"foo"}`, true},
+ {map[string]interface{}{"M": rawText}, `{"M":"foo"}`, true}, // Issue6458
+ {&map[string]interface{}{"M": rawText}, `{"M":"foo"}`, true}, // Issue6458
+ {map[string]interface{}{"M": &rawText}, `{"M":"foo"}`, true},
+ {&map[string]interface{}{"M": &rawText}, `{"M":"foo"}`, true},
+ {T1{rawText}, `{"M":"foo"}`, true}, // Issue6458
+ {T2{&rawText}, `{"M":"foo"}`, true},
+ {&T1{rawText}, `{"M":"foo"}`, true},
+ {&T2{&rawText}, `{"M":"foo"}`, true},
+ }
+
+ for i, tt := range tests {
+ b, err := Marshal(tt.in)
+ if ok := (err == nil); ok != tt.ok {
+ if err != nil {
+ t.Errorf("test %d, unexpected failure: %v", i, err)
+ } else {
+ t.Errorf("test %d, unexpected success", i)
+ }
+ }
+ if got := string(b); got != tt.want {
+ t.Errorf("test %d, Marshal(%#v) = %q, want %q", i, tt.in, got, tt.want)
+ }
+ }
+}
View Lorry Controller Status