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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/rubyspec/core/argf/rewind_spec.rb | |
parent | 52df1d0d3370919711c0577aaa42d1a864709885 (diff) | |
download | ruby-a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5.tar.gz |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/rubyspec/core/argf/rewind_spec.rb')
-rw-r--r-- | spec/rubyspec/core/argf/rewind_spec.rb | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/spec/rubyspec/core/argf/rewind_spec.rb b/spec/rubyspec/core/argf/rewind_spec.rb new file mode 100644 index 0000000000..d6abc3a856 --- /dev/null +++ b/spec/rubyspec/core/argf/rewind_spec.rb @@ -0,0 +1,39 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "ARGF.rewind" do + before :each do + @file1_name = fixture __FILE__, "file1.txt" + @file2_name = fixture __FILE__, "file2.txt" + + @file1 = File.readlines @file1_name + @file2 = File.readlines @file2_name + end + + # NOTE: this test assumes that fixtures files have two lines each + it "goes back to beginning of current file" do + argf [@file1_name, @file2_name] do + @argf.gets + @argf.rewind + @argf.gets.should == @file1.first + + @argf.gets # finish reading file1 + + @argf.gets + @argf.rewind + @argf.gets.should == @file2.first + end + end + + it "resets ARGF.lineno to 0" do + script = fixture __FILE__, "rewind.rb" + out = ruby_exe(script, args: [@file1_name, @file2_name]) + out.should == "0\n1\n0\n" + end + + it "raises an ArgumentError when end of stream reached" do + argf [@file1_name, @file2_name] do + @argf.read + lambda { @argf.rewind }.should raise_error(ArgumentError) + end + end +end |