write float 32

jsoniter_float_test.go

@@ -4,6 +4,9 @@ import (
 	"encoding/json"
 	"fmt"
 	"testing"
+	"github.com/json-iterator/go/require"
+	"bytes"
+	"strconv"
 )
 
 func Test_float64_0(t *testing.T) {
@@ -31,6 +34,30 @@ func Test_float32_1_dot_1_comma(t *testing.T) {
 	}
 }
 
+func Test_write_float32(t *testing.T) {
+	vals := []float32{0, 1, -1, 99, 0xff, 0xfff, 0xffff, 0xfffff, 0xffffff, 0x4ffffff, 0xfffffff,
+	-0x4ffffff, -0xfffffff, 1.2345, 1.23456, 1.234567, 1.001}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(buf, 4096)
+			stream.WriteFloat32(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatFloat(float64(val), 'f', -1, 32), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(buf, 10)
+	stream.WriteRaw("abcdefg")
+	stream.WriteFloat32(1.123456)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("abcdefg1.123456", buf.String())
+}
+
 func Benchmark_jsoniter_float(b *testing.B) {
 	b.ReportAllocs()
 	for n := 0; n < b.N; n++ {