itoa_test.go

     1  // Copyright 2021 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package itoa_test
     6  
     7  import (
     8  	"fmt"
     9  	"internal/itoa"
    10  	"math"
    11  	"testing"
    12  )
    13  
    14  var (
    15  	minInt64  int64  = math.MinInt64
    16  	maxInt64  int64  = math.MaxInt64
    17  	maxUint64 uint64 = math.MaxUint64
    18  )
    19  
    20  func TestItoa(t *testing.T) {
    21  	tests := []int{int(minInt64), math.MinInt32, -999, -100, -1, 0, 1, 100, 999, math.MaxInt32, int(maxInt64)}
    22  	for _, tt := range tests {
    23  		got := itoa.Itoa(tt)
    24  		want := fmt.Sprint(tt)
    25  		if want != got {
    26  			t.Fatalf("Itoa(%d) = %s, want %s", tt, got, want)
    27  		}
    28  	}
    29  }
    30  
    31  func TestUitoa(t *testing.T) {
    32  	tests := []uint{0, 1, 100, 999, math.MaxUint32, uint(maxUint64)}
    33  	for _, tt := range tests {
    34  		got := itoa.Uitoa(tt)
    35  		want := fmt.Sprint(tt)
    36  		if want != got {
    37  			t.Fatalf("Uitoa(%d) = %s, want %s", tt, got, want)
    38  		}
    39  	}
    40  }
    41  
    42  func TestUitox(t *testing.T) {
    43  	tests := []uint{0, 1, 15, 100, 999, math.MaxUint32, uint(maxUint64)}
    44  	for _, tt := range tests {
    45  		got := itoa.Uitox(tt)
    46  		want := fmt.Sprintf("%#x", tt)
    47  		if want != got {
    48  			t.Fatalf("Uitox(%x) = %s, want %s", tt, got, want)
    49  		}
    50  	}
    51  }
    52
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