How to mock os.execute()

[flowdopip]

Hi, is there any documentation on mock os.execute()?

I´ve tried this way:

describe("Plugin: " .. plugin_name .. " - integration tests", function()
    local os_execute_mock
    lazy_setup(function()
        os_execute_mock = mock(os, "execute")
...

    describe("Verify cache behaviour", function()
        describe("When there is a cache miss, ", function()
            it("should return 200", function()
                local r = execute_test("/v1/prefix/route1", {})
                os_execute_mock.returns(0)

but I got this error: attempt to call field 'returns' (a nil value)

EDIT: properly display code block

[Tieske]

I think your mocking is wrong, see https://lunarmodules.github.io/busted/#spies-mocks-stubs

Since you mock a single function you'll probably want to use either a stub or a spy, depending on whether you want the original function to execute or not.