47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package util
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestSplitString(t *testing.T) {
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type testCase struct {
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input string
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n int
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leftSub string
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ellipsis string
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}
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test := func(tc []*testCase, f func(input string, n int) (left, right string)) {
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for _, c := range tc {
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l, r := f(c.input, c.n)
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if c.ellipsis != "" {
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assert.Equal(t, c.leftSub+c.ellipsis, l, "test split %q at %d, expected leftSub: %q", c.input, c.n, c.leftSub)
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assert.Equal(t, c.ellipsis+c.input[len(c.leftSub):], r, "test split %s at %d, expected rightSub: %q", c.input, c.n, c.input[len(c.leftSub):])
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} else {
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assert.Equal(t, c.leftSub, l, "test split %q at %d, expected leftSub: %q", c.input, c.n, c.leftSub)
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assert.Empty(t, r, "test split %q at %d, expected rightSub: %q", c.input, c.n, "")
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}
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}
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}
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tc := []*testCase{
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{"abc123xyz", 0, "", utf8Ellipsis},
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{"abc123xyz", 1, "", utf8Ellipsis},
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{"abc123xyz", 4, "a", utf8Ellipsis},
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{"啊bc123xyz", 4, "", utf8Ellipsis},
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{"啊bc123xyz", 6, "啊", utf8Ellipsis},
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{"啊bc", 5, "啊bc", ""},
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{"啊bc", 6, "啊bc", ""},
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{"abc\xef\x03\xfe", 3, "", asciiEllipsis},
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{"abc\xef\x03\xfe", 4, "a", asciiEllipsis},
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{"\xef\x03", 1, "\xef\x03", ""},
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}
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test(tc, SplitStringAtByteN)
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}
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