| //go:build windows | |
| package shell | |
| import ( | |
| "os" | |
| "path/filepath" | |
| "testing" | |
| ) | |
| // TestResolveInterpreter_PermissiveFallback_Windows is the Windows-native | |
| // counterpart to the POSIX permissive-fallback test. It proves the one | |
| // behavior that makes `#!/bin/bash` hooks work on a stock Windows box | |
| // with Git for Windows installed: when the literal interpreter path does | |
| // not exist, we fall back to a PATH-lookup on the basename and that | |
| // lookup accepts any executable extension Windows honors (here, `.bat`). | |
| // | |
| // We plant a bash.bat in a tempdir rather than a .exe because producing | |
| // a .exe would require a toolchain step; LookPath on Windows resolves | |
| // PATHEXT extensions, so .bat is just as valid for the lookup codepath. | |
| func TestResolveInterpreter_PermissiveFallback_Windows(t *testing.T) { | |
| dir := t.TempDir() | |
| fake := filepath.Join(dir, "bash.bat") | |
| contents := "@echo off\r\nexit /b 0\r\n" | |
| if err := os.WriteFile(fake, []byte(contents), 0o755); err != nil { | |
| t.Fatalf("write fake bash.bat: %v", err) | |
| } | |
| t.Setenv("PATH", dir) | |
| t.Setenv("PATHEXT", ".BAT;.CMD;.EXE") | |
| // Literal path must be absent so the stat fails with ENOENT. | |
| missing := filepath.Join(dir, "definitely-not-here-"+randSuffix(), "bash") | |
| resolved, err := resolveInterpreter(missing) | |
| if err != nil { | |
| t.Fatalf("expected fallback to succeed, got: %v", err) | |
| } | |
| if resolved != fake { | |
| t.Fatalf("resolved = %q, want %q", resolved, fake) | |
| } | |
| } | |