133 lines
2.2 KiB
Go
133 lines
2.2 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package json
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import (
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"regexp"
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"testing"
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)
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func TestNumberIsValid(t *testing.T) {
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// From: http://stackoverflow.com/a/13340826
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var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
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validTests := []string{
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"0",
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"-0",
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"1",
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"-1",
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"0.1",
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"-0.1",
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"1234",
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"-1234",
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"12.34",
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"-12.34",
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"12E0",
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"12E1",
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"12e34",
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"12E-0",
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"12e+1",
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"12e-34",
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"-12E0",
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"-12E1",
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"-12e34",
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"-12E-0",
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"-12e+1",
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"-12e-34",
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"1.2E0",
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"1.2E1",
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"1.2e34",
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"1.2E-0",
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"1.2e+1",
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"1.2e-34",
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"-1.2E0",
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"-1.2E1",
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"-1.2e34",
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"-1.2E-0",
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"-1.2e+1",
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"-1.2e-34",
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"0E0",
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"0E1",
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"0e34",
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"0E-0",
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"0e+1",
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"0e-34",
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"-0E0",
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"-0E1",
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"-0e34",
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"-0E-0",
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"-0e+1",
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"-0e-34",
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}
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for _, test := range validTests {
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if !isValidNumber(test) {
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t.Errorf("%s should be valid", test)
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}
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var f float64
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if err := Unmarshal([]byte(test), &f); err != nil {
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t.Errorf("%s should be valid but Unmarshal failed: %v", test, err)
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}
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if !jsonNumberRegexp.MatchString(test) {
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t.Errorf("%s should be valid but regexp does not match", test)
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}
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}
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invalidTests := []string{
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"",
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"invalid",
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"1.0.1",
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"1..1",
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"-1-2",
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"012a42",
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"01.2",
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"012",
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"12E12.12",
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"1e2e3",
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"1e+-2",
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"1e--23",
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"1e",
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"e1",
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"1e+",
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"1ea",
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"1a",
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"1.a",
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"1.",
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"01",
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"1.e1",
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}
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for _, test := range invalidTests {
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if isValidNumber(test) {
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t.Errorf("%s should be invalid", test)
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}
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var f float64
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if err := Unmarshal([]byte(test), &f); err == nil {
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t.Errorf("%s should be invalid but unmarshal wrote %v", test, f)
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}
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if jsonNumberRegexp.MatchString(test) {
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t.Errorf("%s should be invalid but matches regexp", test)
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}
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}
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}
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func BenchmarkNumberIsValid(b *testing.B) {
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s := "-61657.61667E+61673"
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for i := 0; i < b.N; i++ {
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isValidNumber(s)
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}
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}
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func BenchmarkNumberIsValidRegexp(b *testing.B) {
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var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
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s := "-61657.61667E+61673"
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for i := 0; i < b.N; i++ {
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jsonNumberRegexp.MatchString(s)
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}
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}
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