test-unitで指定したテストだけ実行する方法 ref: http://qiita.com/myokoym/items/2c3559ec0e060b7ec943

file0.txt

$ ruby test_user.rb
Loaded suite test_user
Started
..

Finished in 0.000777458 seconds.
------
2 tests, 2 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
2572.49 tests/s, 2572.49 assertions/s

file1.txt

$ ruby test_user.rb -v
Loaded suite test_user
Started
UserTest: 
  test_full_name:                   .: (0.000200)
  ProfileTest: 
    test_has_profile:                   .: (0.000144)

Finished in 0.000863226 seconds.
------
2 tests, 2 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
2316.89 tests/s, 2316.89 assertions/s

file2.txt

$ ruby test_user.rb -v -n test_full_name
Loaded suite test_user
Started
UserTest: 
  test_full_name:                   .: (0.000314)

Finished in 0.000953645 seconds.
------
1 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
1048.61 tests/s, 1048.61 assertions/s

file3.txt

$ ruby test_user.rb -v -n test_has_profile
Loaded suite test_user
Started
UserTest: 
  ProfileTest: 
    test_has_profile:                   .: (0.000220)

Finished in 0.000694584 seconds.
------
1 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
1439.71 tests/s, 1439.71 assertions/s

file4.txt

$ ruby test_user.rb -v -n "/test_full_name|test_has_profile/" 
Loaded suite test_user
Started
UserTest: 
  test_full_name:                   .: (0.000208)
  ProfileTest: 
    test_has_profile:                   .: (0.000140)

Finished in 0.00091056 seconds.
------
2 tests, 2 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
2196.45 tests/s, 2196.45 assertions/s

file5.txt

$ ruby test_user.rb --help
Test::Unit automatic runner.
Usage: test_user.rb [options] [-- untouched arguments]
    -r, --runner=RUNNER              Use the given RUNNER.
                                     (c[onsole], e[macs], x[ml])
        --collector=COLLECTOR        Use the given COLLECTOR.
                                     (de[scendant], di[r], l[oad], o[bject]_space)
    -n, --name=NAME                  Runs tests matching NAME.
                                     Use '/PATTERN/' for NAME to use regular expression.
        --ignore-name=NAME           Ignores tests matching NAME.
                                     Use '/PATTERN/' for NAME to use regular expression.
    -t, --testcase=TESTCASE          Runs tests in TestCases matching TESTCASE.
                                     Use '/PATTERN/' for TESTCASE to use regular expression.
        --ignore-testcase=TESTCASE   Ignores tests in TestCases matching TESTCASE.
                                     Use '/PATTERN/' for TESTCASE to use regular expression.
        --location=LOCATION          Runs tests that defined in LOCATION.
                                     LOCATION is one of PATH:LINE, PATH or LINE
        --attribute=EXPRESSION       Runs tests that matches EXPRESSION.
                                     EXPRESSION is evaluated as Ruby's expression.
                                     Test attribute name can be used with no receiver in EXPRESSION.
                                     EXPRESSION examples:
                                       !slow
                                       tag == 'important' and !slow
        --[no-]priority-mode         Runs some tests based on their priority.
        --default-priority=PRIORITY  Uses PRIORITY as default priority
                                     (h[igh], i[mportant], l[ow], m[ust], ne[ver], no[rmal])
    -I, --load-path=DIR[:DIR...]     Appends directory list to $LOAD_PATH.
        --color-scheme=SCHEME        Use SCHEME as color scheme.
                                     (d[efault])
        --config=FILE                Use YAML fomat FILE content as configuration file.
        --order=ORDER                Run tests in a test case in ORDER order.
                                     (a[lphabetic], d[efined], r[andom])
        --max-diff-target-string-size=SIZE
                                     Shows diff if both expected result string size and actual result string size are less than or equal SIZE in bytes.
                                     (1000)
    -v, --verbose=[LEVEL]            Set the output level (default is verbose).
                                     (important-only, n[ormal], p[rogress], s[ilent], v[erbose])
        --[no-]use-color=[auto]      Uses color output
                                     (default is auto)
        --progress-row-max=MAX       Uses MAX as max terminal width for progress mark
                                     (default is auto)
        --no-show-detail-immediately Shows not passed test details immediately.
                                     (default is yes)
        --output-file-descriptor=FD  Outputs to file descriptor FD
        --                           Stop processing options so that the
                                     remaining options will be passed to the
                                     test.
    -h, --help                       Display this help.

Deprecated options:
        --console                    Console runner (use --runner).

file6.txt

$ ruby test_user.rb -v -t "/Profile/"
Loaded suite test_user
Started
UserTest: 
  ProfileTest: 
    test_has_profile:                   .: (0.000241)

Finished in 0.000762848 seconds.
------
1 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------
1310.88 tests/s, 1310.88 assertions/s