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// Copyright 2019, The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package value
import (
"archive/tar"
"math"
"reflect"
"testing"
)
func TestIsZero(t *testing.T) {
tests := []struct {
in interface{}
want bool
}{
{0, true},
{1, false},
{"", true},
{"foo", false},
{[]byte(nil), true},
{[]byte{}, false},
{map[string]bool(nil), true},
{map[string]bool{}, false},
{tar.Header{}, true},
{&tar.Header{}, false},
{tar.Header{Name: "foo"}, false},
{(chan bool)(nil), true},
{make(chan bool), false},
{(func(*testing.T))(nil), true},
{TestIsZero, false},
{[...]int{0, 0, 0}, true},
{[...]int{0, 1, 0}, false},
{math.Copysign(0, +1), true},
{math.Copysign(0, -1), false},
{complex(math.Copysign(0, +1), math.Copysign(0, +1)), true},
{complex(math.Copysign(0, -1), math.Copysign(0, +1)), false},
{complex(math.Copysign(0, +1), math.Copysign(0, -1)), false},
{complex(math.Copysign(0, -1), math.Copysign(0, -1)), false},
}
for _, tt := range tests {
t.Run("", func(t *testing.T) {
got := IsZero(reflect.ValueOf(tt.in))
if got != tt.want {
t.Errorf("IsZero(%v) = %v, want %v", tt.in, got, tt.want)
}
})
}
}
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