create-maximum-number_test.go

package problem0321

import (
	"fmt"
	"testing"

	"github.com/stretchr/testify/assert"
)

// tcs is testcase slice
var tcs = []struct {
	nums1 []int
	nums2 []int
	k     int
	ans   []int
}{

	{
		[]int{1, 6, 5, 4, 7, 3, 9, 5, 3, 7, 8, 4, 1, 1, 4},
		[]int{4, 3, 1, 3, 5, 9},
		21,
		[]int{4, 3, 1, 6, 5, 4, 7, 3, 9, 5, 3, 7, 8, 4, 1, 3, 5, 9, 1, 1, 4},
	},

	{
		[]int{6, 7},
		[]int{6, 0, 4},
		5,
		[]int{6, 7, 6, 0, 4},
	},

	{
		[]int{1, 1, 1},
		[]int{9, 9, 9},
		2,
		[]int{9, 9},
	},

	{
		[]int{1, 1, 1},
		[]int{1, 1, 1},
		5,
		[]int{1, 1, 1, 1, 1},
	},

	{
		[]int{2, 8, 0, 4, 5, 1, 4, 8, 9, 9, 0, 8, 2, 9},
		[]int{5, 9, 6, 6, 4, 1, 0, 7},
		22,
		[]int{5, 9, 6, 6, 4, 2, 8, 1, 0, 7, 0, 4, 5, 1, 4, 8, 9, 9, 0, 8, 2, 9},
	},

	{
		[]int{3, 4, 6, 5},
		[]int{9, 1, 2, 5, 8, 3},
		5,
		[]int{9, 8, 6, 5, 3},
	},

	{
		[]int{3, 9},
		[]int{8, 9},
		3,
		[]int{9, 8, 9},
	},

	// 可以有多个 testcase
}

func Test_maxNumber(t *testing.T) {
	ast := assert.New(t)

	for _, tc := range tcs {
		fmt.Printf("~~%v~~\n", tc)
		ast.Equal(tc.ans, maxNumber(tc.nums1, tc.nums2, tc.k), "输入:%v", tc)
	}
}
func Test_outOf(t *testing.T) {
	ast := assert.New(t)

	nums, k := []int{3, 8, 4, 6, 5, 8}, 3
	actual := selecting(k, nums)
	expected := []int{8, 6, 8}
	ast.Equal(expected, actual, "输入，%v, %d", nums, k)
}

func Test_combine(t *testing.T) {
	ast := assert.New(t)

	nums1 := []int{6, 7}
	nums2 := []int{6, 0, 4}
	actual := combine(nums1, nums2)
	expected := []int{6, 7, 6, 0, 4}
	ast.Equal(expected, actual, "输入，%v,%v", nums1, nums2)
}

func Benchmark_maxNumber(b *testing.B) {
	for i := 0; i < b.N; i++ {
		for _, tc := range tcs {
			maxNumber(tc.nums1, tc.nums2, tc.k)
		}
	}
}