![](http://www.gnu-darwin.org/hexley-gd-sm.png)
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# File test/unit/assertions.rb, line 65
def assert_raises(expected_exception_klass, message="")
_wrap_assertion {
assert_instance_of(Class, expected_exception_klass, "Should expect a class of exception")
actual_exception = nil
full_message = build_message(message, expected_exception_klass) {
| arg |
"<#{arg}> exception expected but none was thrown"
}
assert_block(full_message) {
thrown = false
begin
yield
rescue Exception => thrown_exception
actual_exception = thrown_exception
thrown = true
end
thrown
}
full_message = build_message(message, expected_exception_klass, actual_exception) {
| arg1, arg2 |
"<#{arg1}> exception expected but was\n" +
arg2
}
assert_block(full_message) {
expected_exception_klass == actual_exception.class
}
actual_exception
}
end
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