lazy/map_test.go at master · go4ml/lazy · GitHub

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package lazy

import (
	"fmt"
	"gotest.tools/v3/assert"
	"testing"
)

func Test1_Map1(t *testing.T) {
	rs := List([]int{0, 1, 2, 3, 4}).
		Map(func(r int) string { return fmt.Sprint(r) }).
		MustCollectAny().([]string)
	assert.Assert(t, len(rs) == 5)
	for i, r := range rs {
		assert.Assert(t, r == fmt.Sprint(i))
	}
}

func Test2_Map1(t *testing.T) {
	rs := List([]int{0, 1, 2, 3, 4}).
		Map(func(r int) string { return fmt.Sprint(r) }).
		MustCollectAny().([]string)
	assert.Assert(t, len(rs) == 5)
	for i, r := range rs {
		assert.Assert(t, r == fmt.Sprint(i))
	}
}

func Test2_Map2(t *testing.T) {
	dta := []int{7, 2, 3, 4, 5}
	rs := List(dta).
		Map1(func(ctx int) interface{} {
			return func(r int) string {
				return fmt.Sprint(r + ctx)
			}
		}).
		MustCollectAny(1).([]string)
	assert.Assert(t, len(rs) == 5)
	fmt.Println(rs)
	for i, r := range rs {
		assert.Assert(t, r == fmt.Sprint(dta[i]+dta[0]))
	}
}