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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146import { describe, expect, test } from "bun:test"import { ShellScan } from "../../src/shell/scan.js"
describe("PowerShell practical syntax", () => { test.each([ ["$result = git status", ["git status"]], ["$result += (git status)", ["git status"]], ["[string]$result = git status", ["git status"]], ["$x = 1; $x++; git status", ["git status"]], ["$true; 1 + 2; 'literal'; git status", ["git status"]], ["${result}# ignored\ngit status", ["git status"]], [ "Write-Output { ${result}# ignored\ngit status }", ["Write-Output { ${result}# ignored\ngit status }", "git status"], ], ["Switch-Branch main; Function-Name arg", ["Switch-Branch main", "Function-Name arg"]], ["(git status)", ["git status"]], ["@(git status; git diff)", ["git status", "git diff"]], ["$x = @{ status = git status; count = 1 }", ["git status"]], ["if (Test-Path file) { git status } else { git diff }", ["Test-Path file", "git status", "git diff"]], ["if ($true) { git status } elseif ($false) { git diff }", ["git status", "git diff"]], ["foreach ($file in (Get-ChildItem .)) { Get-Content $file }", ["Get-ChildItem .", "Get-Content $file"]], ["foreach ($file in Get-ChildItem .) { Get-Content $file }", ["Get-ChildItem .", "Get-Content $file"]], ["for ($i = 0; $i -lt 2; $i++) { git status }", ["git status"]], ["while (Test-Path file) { git status; break }", ["Test-Path file", "git status"]], ["do { git status } until ($true)", ["git status"]], ["function Get-Status { param($file); git status }; Get-Status", ["git status", "Get-Status"]], ["function Get-Status($file = (Get-Item .)) { git status }", ["Get-Item .", "git status"]], [ "try { git status } catch { Write-Output $_ } finally { git diff }", ["git status", "Write-Output $_", "git diff"], ], ["& { git status }", ["& { git status }", "git status"]], ["return git status", ["git status"]], ["<# <# ignored } #> #> ignored\ngit status", ["git status"]], ["git <# ignored #> status", ["git <# ignored #> status"]], ['Write-Output "$(git status)"', ['Write-Output "$(git status)"', "git status"]], [ 'Write-Output "$(Write-Output "$(git status)")"', ['Write-Output "$(Write-Output "$(git status)")"', 'Write-Output "$(git status)"', "git status"], ], ["Write-Output @'\n$(not-a-command)\n'@; git status", ["Write-Output @'\n$(not-a-command)\n'@", "git status"]], ['Write-Output @"\n$(git status)\n"@', ['Write-Output @"\n$(git status)\n"@', "git status"]], [ "cmd.exe --% $(literal) > literal.txt; still-literal\ngit status", ["cmd.exe --% $(literal) > literal.txt; still-literal", "git status"], ], [ 'cmd.exe --% "literal|still-literal" | Write-Output done', ['cmd.exe --% "literal|still-literal"', "Write-Output done"], ], ["Write-Output '--%' ; git status", ["Write-Output '--%'", "git status"]], ["Write-Output prefix--% literal; git status", ["Write-Output prefix--% literal", "git status"]], ["git status |\n\n# comment\nOut-String", ["git status", "Out-String"]], ] as const)("extracts command resources from %s", (source, resources) => { const result = ShellScan.scanPowerShell(source) expect(result.kind).toBe("scanned") if (result.kind === "opaque") return expect(result.commands.map((command) => command.resource)).toEqual([...resources]) })
test.each(["\n", "\r", "\r\n"])( "distinguishes standalone continuations from escapes inside tokens: %j", (newline) => { expect(ShellScan.scanPowerShell(`git \`${newline}\tstatus`)).toMatchObject({ kind: "scanned", commands: [{ words: ["git", "status"], rawWords: ["git", "status"] }], }) expect(ShellScan.scanPowerShell(`Write-Output left\`${newline}right`)).toMatchObject({ kind: "scanned", commands: [ { words: ["Write-Output", `left${newline}right`], rawWords: ["Write-Output", `left\`${newline}right`] }, ], }) }, )
test("decodes literal backtick escapes without evaluating expressions", () => { const source = '& "Wr`ite-Output" "tab`tnewline`n`u{1f642}" left`;right' expect(ShellScan.scanPowerShell(source)).toMatchObject({ kind: "scanned", commands: [ { resource: source, words: ["Write-Output", "tab\tnewline\n\u{1f642}", "left;right"], rawWords: ['"Wr`ite-Output"', '"tab`tnewline`n`u{1f642}"', "left`;right"], }, ], }) })
test("preserves word offsets relative to each raw command, including nested invocations", () => { const source = ' & git\tstatus\t--short; Write-Output "$(git\tlog)"' const result = ShellScan.scanPowerShell(source) expect(result.kind).toBe("scanned") if (result.kind === "opaque") return expect(result.commands[0]?.wordEnds).toEqual([5, 12, 20]) expect(result.commands[2]?.resource).toBe("git\tlog") for (const command of result.commands) { expect(command.wordEnds).toHaveLength(command.rawWords.length) for (const [index, word] of command.rawWords.entries()) { const end = command.wordEnds![index]! expect(command.resource.slice(end - word.length, end)).toBe(word) } } })
test.each([ ["ForEach-Object { git status }", true], ["git status; ForEach-Object { git diff }", true], ["git status | ForEach-Object { git diff }", undefined], ["git status && ForEach-Object { git diff }", undefined], ["git status || ForEach-Object { git diff }", undefined], ["& ForEach-Object { git status }", undefined], ["& 'ForEach-Object' { git status }", undefined], ["% { git status }", true], ["foreachthing { git status }", true], ] as const)("retains caller and lexical statement-head context: %s", (source, statementHead) => { const result = ShellScan.scanPowerShell(source) expect(result.kind).toBe("scanned") if (result.kind === "opaque") return const caller = result.commands.find((command) => command.rawWords.at(-1)?.startsWith("{")) expect(caller).toBeDefined() expect(caller?.statementHead).toBe(statementHead) expect(result.commands.at(-1)?.words[0]).toBe("git") })
test.each([ "if ($true) { git status", 'Write-Output "$(git status"', "Write-Output @(git status", "Write-Output @'\nunclosed", "<# unclosed", "git status |\n# no operand", "Write-Output `u{110000}", "Write-Output `u{xyz}", ])("bounds and reports incomplete lexical structures: %s", (source) => { expect(ShellScan.scanPowerShell(source).kind).toBe("opaque") })
test("bounds mixed expression, string, and block recursion", () => { expect(ShellScan.scanPowerShell("$(".repeat(40) + "git status" + ")".repeat(40)).kind).toBe("opaque") expect(ShellScan.scanPowerShell('Write-Output "$('.repeat(40) + "git status" + ')"'.repeat(40)).kind).toBe("opaque") })})