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require 'test/unit'
require 'posix-spawn'
class BacktickTest < Test::Unit::TestCase
include POSIX::Spawn
def test_backtick_simple
out = `exit`
assert_equal '', out
assert_equal 0, $?.exitstatus
end
def test_backtick_output
out = `echo 123`
assert_equal "123\n", out
assert_equal 0, $?.exitstatus, 0
end
def test_backtick_failure
out = `nosuchcmd 2> /dev/null`
assert_equal '', out
assert_equal 127, $?.exitstatus
end
def test_backtick_redirect
out = `nosuchcmd 2>&1`
assert_equal "/bin/sh: nosuchcmd: command not found\n", out
assert_equal 127, $?.exitstatus, 127
end
def test_backtick_huge
out = `yes | head -50000`
assert_equal 100000, out.size
assert_equal 0, $?.exitstatus
end
end
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