87 lines
2.5 KiB
Go
87 lines
2.5 KiB
Go
/*
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Copyright 2022 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package layout
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import (
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"bytes"
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"encoding/base64"
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"encoding/binary"
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"fmt"
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"math"
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"testing"
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"golang.org/x/exp/constraints"
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)
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func TestNumberField_SizeRange(t *testing.T) {
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testcases := map[string]struct {
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Field
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Size int
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}{
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"uint8": {Field: NumberField[uint8]{}, Size: 1},
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"int8": {Field: NumberField[int8]{}, Size: 1},
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"uint16": {Field: NumberField[uint16]{}, Size: 2},
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"int16": {Field: NumberField[int16]{}, Size: 2},
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"uint32": {Field: NumberField[uint32]{}, Size: 4},
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"int32": {Field: NumberField[int32]{}, Size: 4},
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"uint64": {Field: NumberField[uint64]{}, Size: 8},
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"int64": {Field: NumberField[int64]{}, Size: 8},
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"float32": {Field: NumberField[float32]{}, Size: 4},
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"float64": {Field: NumberField[float64]{}, Size: 8},
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}
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for name, tc := range testcases {
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t.Run(name, func(t *testing.T) {
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s, _ := tc.SizeRange()
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if s != tc.Size {
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t.Fatalf("%t's size not match, expect %d, but is %d", tc.Field, tc.Size, s)
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}
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})
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}
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}
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func testNumberExtraction[T constraints.Integer | constraints.Float](t *testing.T, expect T) {
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buf := &bytes.Buffer{}
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_ = binary.Write(buf, binary.LittleEndian, expect)
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fmt.Printf("%T %v in LE: %s\n", expect, expect, base64.StdEncoding.EncodeToString(buf.Bytes()))
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var extract T
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f := Number(&extract)
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if err := f.FromStream(buf); err != nil {
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t.Fatal(err)
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}
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if extract != extract {
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t.Fatalf("not equals")
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}
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}
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func TestNumberField_FromBytes(t *testing.T) {
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testNumberExtraction(t, float32(1.0))
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testNumberExtraction(t, float32(0.0))
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testNumberExtraction(t, float32(1.1))
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testNumberExtraction(t, float32(-1.0))
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testNumberExtraction(t, float32(math.MaxFloat32))
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testNumberExtraction(t, float64(1.0))
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testNumberExtraction(t, float64(0.0))
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testNumberExtraction(t, float64(1.1))
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testNumberExtraction(t, float64(-1.0))
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testNumberExtraction(t, float64(math.MaxFloat32))
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testNumberExtraction(t, float64(math.MaxFloat64))
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}
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