`(ulimit -n 30; make test-tool)` fails with unexplicit message:
"undefined method `write' for nil:NilClass" due to lack of stdout.
This change makes it explicit. [Bug #5577]
`exception_details` is not defined anywhere.
This commit fixes the following test crash in ruby 2.4
```
Error: test_assert_output_lines(TestFileUtils): NoMethodError: undefined method `exception_details' for #<TestFileUtils:0x00005556ef699178>
```
And replaces it with an actual test failure:
```
[Test::Unit::CoreAssertions::MiniTest::Assertion] exception expected, not #<NoMethodError: undefined method `full_message' for #<RuntimeError: ok>
Did you mean? message>.
```
2f38ba6e82
http://ci.rvm.jp/results/trunk-mjit@silicon-docker/2380788
```
test_all #<Thread:0x000055b6c8e9fca8@/tmp/ruby/v2/src/trunk-mjit/tool/lib/test/unit/parallel.rb:42 run> terminated with exception (report_on_exception is true):
<internal:pack>:134:in `pack': no implicit conversion of false into String (TypeError)
from /tmp/ruby/v2/src/trunk-mjit/tool/lib/test/unit/parallel.rb:160:in `_report'
from /tmp/ruby/v2/src/trunk-mjit/tool/lib/test/unit/parallel.rb:45:in `block in _run_suite'
```
This reverts commit 43015275b9.
`assert_raise_message` in test-unit is different from
`assert_raise_with_message`. It checks the exception message
only, but not the exception class,
parallel test (`make test-all TESTS=-j8`) runs tests on specified
number of processes. However, some test checkers written in
`runner.rb` are not loaded. This fix enable these checkers on
parallel tests.
See also: https://github.com/ruby/ruby/pull/2508
`make test-all TESTS=name` can specify running test files by name.
name can be dirname ('dir/') or a file ('.../test_foo.rb'). This
patch complement `test_` prefix for a test. So we only need to
specify `TESTS=ruby/hash` which means `TESTS=ruby/test_hash.rb`.
tool/test/runner.rb had been copied from test/runner.rb.
test/runner.rb was for `make test-all`, and tool/test/runner.rb was for
`make test-testframework` and `make test-tool`.
But I want to avoid the code clones.
This change makes tool/test/runner.rb support --test-target-dir option
which allows tool/test/runner.rb to run `make test-all`.
Now we can remove test/runner.rb.
for test-all rule, we can specify a file with TESTS option like
`TESTS=test_xxx.rb`. However, we can eliminate last '.rb' suffix
so this patch try with '.rb' suffix if the given path is not available.
