fix: patch ci (#145)

src/tests/tools/shell-command.test.ts

@@ -0,0 +1,36 @@
+import { expect, test } from "bun:test";
+import { shell_command } from "../../tools/impl/ShellCommand.js";
+
+test("shell_command executes basic echo", async () => {
+  const result = await shell_command({ command: "echo shell-basic" });
+  expect(result.output).toContain("shell-basic");
+});
+
+test("shell_command falls back when preferred shell is missing", async () => {
+  const marker = "shell-fallback";
+  if (process.platform === "win32") {
+    const originalUpper = process.env.COMSPEC;
+    const originalLower = process.env.ComSpec;
+    process.env.COMSPEC = "C:/missing-shell.exe";
+    process.env.ComSpec = "C:/missing-shell.exe";
+    try {
+      const result = await shell_command({ command: `echo ${marker}` });
+      expect(result.output).toContain(marker);
+    } finally {
+      if (originalUpper === undefined) delete process.env.COMSPEC;
+      else process.env.COMSPEC = originalUpper;
+      if (originalLower === undefined) delete process.env.ComSpec;
+      else process.env.ComSpec = originalLower;
+    }
+  } else {
+    const original = process.env.SHELL;
+    process.env.SHELL = "/nonexistent-shell";
+    try {
+      const result = await shell_command({ command: `echo ${marker}` });
+      expect(result.output).toContain(marker);
+    } finally {
+      if (original === undefined) delete process.env.SHELL;
+      else process.env.SHELL = original;
+    }
+  }
+});