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require 'test/unit'
class TestSetTraceFunc < Test::Unit::TestCase
def foo; end
def test_event
events = []
set_trace_func(Proc.new { |event, file, lineno|
events << [event, lineno]
})
a = 1
foo
a
set_trace_func nil
assert_equal(["line", 11], events.shift) # line "a = 1"
assert_equal(["line", 12], events.shift) # line "foo"
assert_equal(["call", 4], events.shift) # call foo
event, lineno = events.shift # return
assert_equal("return", event)
assert_not_equal(4, lineno)# it should be 4 but cannot be expected in 1.8
assert_equal(["line", 13], events.shift) # line "a"
assert_equal(["line", 14], events.shift) # line "set_trace_func nil"
assert_equal(["c-call", 14], events.shift) # c-call set_trace_func
end
end
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