const_test.go

Documentation: math

		 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 math_test
		 6  
		 7  import (
		 8  	"testing"
		 9  
		10  	. "math"
		11  )
		12  
		13  func TestMaxUint(t *testing.T) {
		14  	if v := uint(MaxUint); v+1 != 0 {
		15  		t.Errorf("MaxUint should wrap around to zero: %d", v+1)
		16  	}
		17  	if v := uint8(MaxUint8); v+1 != 0 {
		18  		t.Errorf("MaxUint8 should wrap around to zero: %d", v+1)
		19  	}
		20  	if v := uint16(MaxUint16); v+1 != 0 {
		21  		t.Errorf("MaxUint16 should wrap around to zero: %d", v+1)
		22  	}
		23  	if v := uint32(MaxUint32); v+1 != 0 {
		24  		t.Errorf("MaxUint32 should wrap around to zero: %d", v+1)
		25  	}
		26  	if v := uint64(MaxUint64); v+1 != 0 {
		27  		t.Errorf("MaxUint64 should wrap around to zero: %d", v+1)
		28  	}
		29  }
		30  
		31  func TestMaxInt(t *testing.T) {
		32  	if v := int(MaxInt); v+1 != MinInt {
		33  		t.Errorf("MaxInt should wrap around to MinInt: %d", v+1)
		34  	}
		35  	if v := int8(MaxInt8); v+1 != MinInt8 {
		36  		t.Errorf("MaxInt8 should wrap around to MinInt8: %d", v+1)
		37  	}
		38  	if v := int16(MaxInt16); v+1 != MinInt16 {
		39  		t.Errorf("MaxInt16 should wrap around to MinInt16: %d", v+1)
		40  	}
		41  	if v := int32(MaxInt32); v+1 != MinInt32 {
		42  		t.Errorf("MaxInt32 should wrap around to MinInt32: %d", v+1)
		43  	}
		44  	if v := int64(MaxInt64); v+1 != MinInt64 {
		45  		t.Errorf("MaxInt64 should wrap around to MinInt64: %d", v+1)
		46  	}
		47  }
		48
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