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Add tests for File.extname

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* file.c (rb_file_s_extname): [DOC] add an example.
* test/ruby/test_path.rb (test_extname): add tests.  [Fix GH-978]
  * path starts with dot ('.a.rb')
  * path includes dir name ('a/b/d/test.rb')
  * path includes dir name and dir name starts with dot
    ('.a/b/d/test.rb')

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51359 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-07-24 07:35:38 +00:00
parent a34343b3a3
commit 4e58f21f79
3 changed files with 14 additions and 0 deletions
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test/ruby/test_path.rb
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@ -230,6 +230,9 @@ class TestPath < Test::Unit::TestCase
assert_equal('', File.extname('a'))
ext = '.rb'
assert_equal(ext, File.extname('a.rb'))
assert_equal(ext, File.extname('.a.rb'))
assert_equal(ext, File.extname('a/b/d/test.rb'))
assert_equal(ext, File.extname('.a/b/d/test.rb'))
unless /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
# trailing spaces and dots are ignored on NTFS.
ext = ''