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import bash from "@cocalc/backend/bash";
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import { once } from "@cocalc/util/async-utils";
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describe("test the bash child process spawner", () => {
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  it("echos 'hi'", async () => {
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    const child = await bash("echo 'hi'");
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    let out = "";
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    child.stdout.on("data", (data) => {
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      out += data.toString();
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    });
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    await once(child, "exit");
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    expect(out).toBe("hi\n");
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  });
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  it("runs a multiline bash script", async () => {
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    const child = await bash(`
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sum=0
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for i in {1..100}; do
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  sum=$((sum + i))
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done
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echo $sum
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`);
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    let out = "";
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    child.stdout.on("data", (data) => {
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      out += data.toString();
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    });
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    await once(child, "exit");
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    expect(out).toBe("5050\n");
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  });
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  it("runs a bash script with ulimit to limit execution time", async () => {
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    const child = await bash(`
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ulimit -t 1
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while : ; do : ; done  # infinite CPU 
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`);
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    const x = await once(child, "exit");
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    expect(x[1]).toBe("SIGKILL");
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  });
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});
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