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require "minitest/autorun"
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require "lox"
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require "open3"
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require "pry"
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class TestLox < Minitest::Test
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def test_error_on_more_than_one_arg
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o, s = Open3.capture2("./lox.rb foo bar")
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assert_equal 64, s.exitstatus
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assert_equal "Usage: ./lox.rb [script]\n", o
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end
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end
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