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intersect_test.go
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intersect_test.go
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package lo
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestContains(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Contains([]int{0, 1, 2, 3, 4, 5}, 5)
result2 := Contains([]int{0, 1, 2, 3, 4, 5}, 6)
is.Equal(result1, true)
is.Equal(result2, false)
}
func TestContainsBy(t *testing.T) {
t.Parallel()
is := assert.New(t)
type a struct {
A int
B string
}
a1 := []a{{A: 1, B: "1"}, {A: 2, B: "2"}, {A: 3, B: "3"}}
result1 := ContainsBy(a1, func(t a) bool { return t.A == 1 && t.B == "2" })
result2 := ContainsBy(a1, func(t a) bool { return t.A == 2 && t.B == "2" })
a2 := []string{"aaa", "bbb", "ccc"}
result3 := ContainsBy(a2, func(t string) bool { return t == "ccc" })
result4 := ContainsBy(a2, func(t string) bool { return t == "ddd" })
is.Equal(result1, false)
is.Equal(result2, true)
is.Equal(result3, true)
is.Equal(result4, false)
}
func TestEvery(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Every([]int{0, 1, 2, 3, 4, 5}, []int{0, 2})
result2 := Every([]int{0, 1, 2, 3, 4, 5}, []int{0, 6})
result3 := Every([]int{0, 1, 2, 3, 4, 5}, []int{-1, 6})
result4 := Every([]int{0, 1, 2, 3, 4, 5}, []int{})
is.True(result1)
is.False(result2)
is.False(result3)
is.True(result4)
}
func TestEveryBy(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := EveryBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 5
})
is.True(result1)
result2 := EveryBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 3
})
is.False(result2)
result3 := EveryBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 0
})
is.False(result3)
result4 := EveryBy([]int{}, func(x int) bool {
return x < 5
})
is.True(result4)
}
func TestSome(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Some([]int{0, 1, 2, 3, 4, 5}, []int{0, 2})
result2 := Some([]int{0, 1, 2, 3, 4, 5}, []int{0, 6})
result3 := Some([]int{0, 1, 2, 3, 4, 5}, []int{-1, 6})
result4 := Some([]int{0, 1, 2, 3, 4, 5}, []int{})
is.True(result1)
is.True(result2)
is.False(result3)
is.False(result4)
}
func TestSomeBy(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := SomeBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 5
})
is.True(result1)
result2 := SomeBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 3
})
is.True(result2)
result3 := SomeBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 0
})
is.False(result3)
result4 := SomeBy([]int{}, func(x int) bool {
return x < 5
})
is.False(result4)
}
func TestNone(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := None([]int{0, 1, 2, 3, 4, 5}, []int{0, 2})
result2 := None([]int{0, 1, 2, 3, 4, 5}, []int{0, 6})
result3 := None([]int{0, 1, 2, 3, 4, 5}, []int{-1, 6})
result4 := None([]int{0, 1, 2, 3, 4, 5}, []int{})
is.False(result1)
is.False(result2)
is.True(result3)
is.True(result4)
}
func TestNoneBy(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := NoneBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 5
})
is.False(result1)
result2 := NoneBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 3
})
is.False(result2)
result3 := NoneBy([]int{1, 2, 3, 4}, func(x int) bool {
return x < 0
})
is.True(result3)
result4 := NoneBy([]int{}, func(x int) bool {
return x < 5
})
is.True(result4)
}
func TestIntersect(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Intersect([]int{0, 1, 2, 3, 4, 5}, []int{0, 2})
result2 := Intersect([]int{0, 1, 2, 3, 4, 5}, []int{0, 6})
result3 := Intersect([]int{0, 1, 2, 3, 4, 5}, []int{-1, 6})
result4 := Intersect([]int{0, 6}, []int{0, 1, 2, 3, 4, 5})
result5 := Intersect([]int{0, 6, 0}, []int{0, 1, 2, 3, 4, 5})
is.Equal(result1, []int{0, 2})
is.Equal(result2, []int{0})
is.Equal(result3, []int{})
is.Equal(result4, []int{0})
is.Equal(result5, []int{0})
type myStrings []string
allStrings := myStrings{"", "foo", "bar"}
nonempty := Intersect(allStrings, allStrings)
is.IsType(nonempty, allStrings, "type preserved")
}
func TestDifference(t *testing.T) {
t.Parallel()
is := assert.New(t)
left1, right1 := Difference([]int{0, 1, 2, 3, 4, 5}, []int{0, 2, 6})
is.Equal(left1, []int{1, 3, 4, 5})
is.Equal(right1, []int{6})
left2, right2 := Difference([]int{1, 2, 3, 4, 5}, []int{0, 6})
is.Equal(left2, []int{1, 2, 3, 4, 5})
is.Equal(right2, []int{0, 6})
left3, right3 := Difference([]int{0, 1, 2, 3, 4, 5}, []int{0, 1, 2, 3, 4, 5})
is.Equal(left3, []int{})
is.Equal(right3, []int{})
type myStrings []string
allStrings := myStrings{"", "foo", "bar"}
a, b := Difference(allStrings, allStrings)
is.IsType(a, allStrings, "type preserved")
is.IsType(b, allStrings, "type preserved")
}
func TestUnion(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Union([]int{0, 1, 2, 3, 4, 5}, []int{0, 2, 10})
result2 := Union([]int{0, 1, 2, 3, 4, 5}, []int{6, 7})
result3 := Union([]int{0, 1, 2, 3, 4, 5}, []int{})
result4 := Union([]int{0, 1, 2}, []int{0, 1, 2})
result5 := Union([]int{}, []int{})
is.Equal(result1, []int{0, 1, 2, 3, 4, 5, 10})
is.Equal(result2, []int{0, 1, 2, 3, 4, 5, 6, 7})
is.Equal(result3, []int{0, 1, 2, 3, 4, 5})
is.Equal(result4, []int{0, 1, 2})
is.Equal(result5, []int{})
result11 := Union([]int{0, 1, 2, 3, 4, 5}, []int{0, 2, 10}, []int{0, 1, 11})
result12 := Union([]int{0, 1, 2, 3, 4, 5}, []int{6, 7}, []int{8, 9})
result13 := Union([]int{0, 1, 2, 3, 4, 5}, []int{}, []int{})
result14 := Union([]int{0, 1, 2}, []int{0, 1, 2}, []int{0, 1, 2})
result15 := Union([]int{}, []int{}, []int{})
is.Equal(result11, []int{0, 1, 2, 3, 4, 5, 10, 11})
is.Equal(result12, []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9})
is.Equal(result13, []int{0, 1, 2, 3, 4, 5})
is.Equal(result14, []int{0, 1, 2})
is.Equal(result15, []int{})
type myStrings []string
allStrings := myStrings{"", "foo", "bar"}
nonempty := Union(allStrings, allStrings)
is.IsType(nonempty, allStrings, "type preserved")
}
func TestWithout(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := Without([]int{0, 2, 10}, 0, 1, 2, 3, 4, 5)
result2 := Without([]int{0, 7}, 0, 1, 2, 3, 4, 5)
result3 := Without([]int{}, 0, 1, 2, 3, 4, 5)
result4 := Without([]int{0, 1, 2}, 0, 1, 2)
result5 := Without([]int{})
is.Equal(result1, []int{10})
is.Equal(result2, []int{7})
is.Equal(result3, []int{})
is.Equal(result4, []int{})
is.Equal(result5, []int{})
type myStrings []string
allStrings := myStrings{"", "foo", "bar"}
nonempty := Without(allStrings, "")
is.IsType(nonempty, allStrings, "type preserved")
}
func TestWithoutEmpty(t *testing.T) {
t.Parallel()
is := assert.New(t)
result1 := WithoutEmpty([]int{0, 1, 2})
result2 := WithoutEmpty([]int{1, 2})
result3 := WithoutEmpty([]int{})
is.Equal(result1, []int{1, 2})
is.Equal(result2, []int{1, 2})
is.Equal(result3, []int{})
type myStrings []string
allStrings := myStrings{"", "foo", "bar"}
nonempty := WithoutEmpty(allStrings)
is.IsType(nonempty, allStrings, "type preserved")
}