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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-10-27 10:48:40 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-10-27 10:48:40 +0000 |
commit | 3e6337b88b5255aba07b8f44de72cd5885f59465 (patch) | |
tree | 6146781aa381404b88ea4bfa2a44e75e8bc90d14 /spec/ruby/core/io/pread_spec.rb | |
parent | ecc707e233a5577ea2048b3199d4baaf96c6b0f8 (diff) | |
download | ruby-3e6337b88b5255aba07b8f44de72cd5885f59465.tar.gz |
Update to ruby/spec@8b743a3
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65388 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core/io/pread_spec.rb')
-rw-r--r-- | spec/ruby/core/io/pread_spec.rb | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/spec/ruby/core/io/pread_spec.rb b/spec/ruby/core/io/pread_spec.rb new file mode 100644 index 0000000000..b5b516fa53 --- /dev/null +++ b/spec/ruby/core/io/pread_spec.rb @@ -0,0 +1,52 @@ +# -*- encoding: utf-8 -*- +require_relative '../../spec_helper' + +ruby_version_is "2.5" do + platform_is_not :windows do + describe "IO#pread" do + before :each do + @fname = tmp("io_pread.txt") + @contents = "1234567890" + touch(@fname) { |f| f.write @contents } + @file = File.open(@fname, "r+") + end + + after :each do + @file.close + rm_r @fname + end + + it "accepts a length, and an offset" do + @file.pread(4, 0).should == "1234" + @file.pread(3, 4).should == "567" + end + + it "accepts a length, an offset, and an output buffer" do + buffer = "foo" + @file.pread(3, 4, buffer) + buffer.should == "567" + end + + it "does not advance the file pointer" do + @file.pread(4, 0).should == "1234" + @file.read.should == "1234567890" + end + + it "raises EOFError if end-of-file is reached" do + lambda { @file.pread(1, 10) }.should raise_error(EOFError) + end + + it "raises IOError when file is not open in read mode" do + File.open(@fname, "w") do |file| + lambda { file.pread(1, 1) }.should raise_error(IOError) + end + end + + it "raises IOError when file is closed" do + file = File.open(@fname, "r+") + file.close + lambda { file.pread(1, 1) }.should raise_error(IOError) + end + end + end +end |