check_env_spec.lua

describe("check_env module", function ()
    local check_env = require "lib.check_env"

    before_each(function()
        stub(os, "getenv")
    end)

    after_each(function ()
        os.getenv:revert()
    end)

    it("should return true if RUN_SUM env variable is set to '1'", function ()
        os.getenv.on_call_with("RUN_SUM").returns("1")
        assert.True(check_env())
    end)

    it("should return false if RUN_SUM env variable is not set", function ()
        os.getenv.on_call_with("RUN_SUM").returns(nil)
        assert.False(check_env())
    end)
end)