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64 lines
1.3 KiB
64 lines
1.3 KiB
package mergesorted_test
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import (
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"testing"
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ms "git.jxs.me/leetgo/mergesorted"
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"github.com/stretchr/testify/require"
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)
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func buildList(values []int) *ms.ListNode {
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var result *ms.ListNode
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for i := len(values) - 1; i >= 0; i-- {
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result = &ms.ListNode{Val: values[i], Next: result}
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}
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return result
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}
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func TestEmpty(t *testing.T) {
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require.Nil(t, nil, ms.MergeTwoLists(nil, nil))
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}
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func TestEmptyRight(t *testing.T) {
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left := buildList([]int{4, 5})
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right := buildList([]int{})
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res := ms.MergeTwoLists(left, right)
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require.Equal(t, left, res)
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}
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func TestEmptyLeft(t *testing.T) {
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left := buildList([]int{})
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right := buildList([]int{1, 2})
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res := ms.MergeTwoLists(left, right)
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require.Equal(t, right, res)
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}
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func TestMix(t *testing.T) {
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left := buildList([]int{1, 3})
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right := buildList([]int{2, 4})
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res := ms.MergeTwoLists(left, right)
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expected := buildList([]int{1, 2, 3, 4})
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require.Equal(t, expected, res)
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}
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func TestExample1(t *testing.T) {
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left := buildList([]int{1, 3, 4})
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right := buildList([]int{1, 2, 4})
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res := ms.MergeTwoLists(left, right)
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expected := buildList([]int{1, 1, 2, 3, 4, 4})
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require.Equal(t, expected, res)
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}
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func TestExample2(t *testing.T) {
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left := buildList([]int{})
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right := buildList([]int{0})
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res := ms.MergeTwoLists(left, right)
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expected := buildList([]int{0})
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require.Equal(t, expected, res)
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}
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