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functional_test.go
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functional_test.go
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package tricks_test
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/janstoon/toolbox/tricks"
)
func TestFilter(t *testing.T) {
assert.Nil(t, tricks.Filter([]int{1, 3, 4, 5}, tricks.MatchEqual(2)))
assert.Nil(t, tricks.Filter([]int{1, 2, 4, 5, 7, 8}, func(src int) bool {
return src%3 == 0
}))
assert.Equal(t, []int{2, 4, 6}, tricks.Filter([]int{1, 2, 3, 4, 5, 6}, func(src int) bool {
return src%2 == 0
}))
}
func TestMap(t *testing.T) {
assert.Nil(t, tricks.Map(nil, func(src any) any {
return src
}))
assert.Equal(t, []int{}, tricks.Map([]int{}, func(src int) int {
return src
}))
assert.Equal(t, []int{2, 4, 6, 8, 10, 12}, tricks.Map([]int{1, 2, 3, 4, 5, 6}, func(src int) int {
return src * 2
}))
}
func TestReduce(t *testing.T) {
assert.Equal(t, 720, tricks.Reduce([]int{1, 2, 3, 4, 5, 6}, func(r int, n int) int {
if r == 0 {
return n
}
return r * n
}))
assert.Equal(t, 7, tricks.Reduce([][]int{{1, 2}, {1, 2, 3}, {1, 2}}, func(r int, slice []int) int {
return r + len(slice)
}))
}
func TestFind(t *testing.T) {
assert.Equal(t, tricks.ValPtr(5), tricks.Find([]int{1, 2, 3, 4, 5, 6}, tricks.MatchEqual(5)))
assert.Nil(t, tricks.Find([]int{1, 2, 3, 4, 5, 6}, tricks.MatchEqual(50)))
}
func TestFindIndex(t *testing.T) {
assert.Equal(t, 4, tricks.FindIndex([]int{1, 2, 3, 4, 5, 6}, tricks.MatchEqual(5)))
assert.Equal(t, -1, tricks.FindIndex([]int{1, 2, 3, 4, 5, 6}, tricks.MatchEqual(50)))
}
func TestIndexOf(t *testing.T) {
assert.Equal(t, 4, tricks.IndexOf(5, []int{1, 2, 3, 4, 5, 6}))
assert.Equal(t, -1, tricks.IndexOf(50, []int{1, 2, 3, 4, 5, 6}))
}
func TestFlat(t *testing.T) {
assert.Nil(t, tricks.Flat[any]())
assert.Nil(t, tricks.Flat([]int{}))
assert.Nil(t, tricks.Flat([]int{}, []int{}))
assert.Equal(t, []int{1, 2, 1, 3, 4, 2, 3, 4, 1, 7},
tricks.Flat([]int{1, 2}, []int{1, 3, 4}, []int{2, 3, 4}, []int{1, 7}))
assert.Equal(t, []int{1, 2, 1, 3, 4, 2, 3, 4, 1, 7},
tricks.Flat([][]int{{1, 2}, {1, 3, 4}, {2, 3, 4}, {1, 7}}...))
}