77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
//go:build !windows
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package helpers
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import (
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"os/exec"
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"testing"
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)
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// TestCrossPlatformCoverageShellQuoteArgRoundTrip 把引用后的串交给真 /bin/sh 求值，证明它被解析回
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// **恰好一个、且内容完全相同**的参数。上面那条表驱动测试只能证明「我以为的形态」，这条证明
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// 「shell 认的形态」——两者不是一回事，恢复命令是给用户复制到 shell 里跑的，后者才是契约。
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//
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// 它同时是注入的负向对照：一旦引用失效，$(id) / `id` 会真的执行、空格与 & 会拆参，argc 或
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// 取回的值必然不等于原值，测试立刻红。用 build tag 排除 Windows（无 POSIX sh），跨平台形态
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// 断言留在 shell_quote_test.go。
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func TestCrossPlatformCoverageShellQuoteArgRoundTrip(t *testing.T) {
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sh, err := exec.LookPath("sh")
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if err != nil {
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t.Skipf("POSIX sh unavailable: %v", err)
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}
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values := []string{
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"ws-1",
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"https://alidocs.dingtalk.com/i/nodes/x?spaceId=1&type=doc",
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"sp 7",
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"a;id",
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"a&b",
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"a|b",
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"$(id)",
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"`id`",
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"$HOME",
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"*.txt",
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"a>b",
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`a\b`,
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`a"b`,
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"a!b",
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"{a,b}",
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"(a)",
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"~/x",
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"a#b",
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"it's",
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"'",
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"a'b'c",
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"",
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"报表",
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"a\tb",
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"a\nb",
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"--not-a-flag",
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}
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for _, want := range values {
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t.Run(want, func(t *testing.T) {
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quoted := ShellQuoteArg(want)
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// 1) 未被拆参也未被吞掉：位置参数个数必须恰好为 1。
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// 引用失效时 "sp 7" 会变 2 个、"" 会变 0 个、$(id) 会变 id 的输出词数。
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argc, err := exec.Command(sh, "-c", "set -- "+quoted+`; printf %s "$#"`).Output()
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if err != nil {
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t.Fatalf("argc probe failed for %q (quoted %s): %v", want, quoted, err)
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}
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if string(argc) != "1" {
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t.Fatalf("argc = %s, want 1 — %q quoted as %s split or vanished", argc, want, quoted)
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}
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// 2) 内容逐字节相同：展开、命令替换、转义都不得改动值。
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got, err := exec.Command(sh, "-c", "set -- "+quoted+`; printf %s "$1"`).Output()
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if err != nil {
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t.Fatalf("value probe failed for %q (quoted %s): %v", want, quoted, err)
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}
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if string(got) != want {
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t.Fatalf("round-trip mismatch\n input: %q\n quoted: %s\n shell: %q", want, quoted, got)
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}
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})
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}
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}
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