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package funk
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestUnion(t *testing.T) {
is := assert.New(t)
r := Union([]int{1, 2, 3, 4}, []int{2, 4, 6})
is.Equal(r, []int{1, 2, 3, 4, 2, 4, 6})
r = Union(map[int]int{1: 1, 2: 2}, map[int]int{1: 0, 3: 3})
is.Equal(r, map[int]int{1: 0, 2: 2, 3: 3})
}
func TestUnionShortcut(t *testing.T) {
is := assert.New(t)
r := Union(nil)
is.Nil(r)
r = Union([]int{1, 2})
is.Equal(r, []int{1, 2})
}
func TestUnionStringMap(t *testing.T) {
is := assert.New(t)
r := Union(map[string]string{"a": "a", "b": "b"}, map[string]string{"a": "z", "z": "a"}, map[string]string{"z": "z"})
is.Equal(r, map[string]string{"a": "z", "b": "b", "z": "z"})
}
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