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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/library/stringio/truncate_spec.rb | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) | |
download | ruby-1d15d5f08032acf1b7bceacbb450d617ff6e0931.tar.gz |
Move spec/rubyspec to spec/ruby for consistency
* Other ruby implementations use the spec/ruby directory.
[Misc #13792] [ruby-core:82287]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/library/stringio/truncate_spec.rb')
-rw-r--r-- | spec/ruby/library/stringio/truncate_spec.rb | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/truncate_spec.rb b/spec/ruby/library/stringio/truncate_spec.rb new file mode 100644 index 0000000000..1023b3d13c --- /dev/null +++ b/spec/ruby/library/stringio/truncate_spec.rb @@ -0,0 +1,70 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require "stringio" + +describe "StringIO#truncate when passed [length]" do + before :each do + @io = StringIO.new('123456789') + end + + # TODO: Report to Ruby-Core: The RDoc says it always returns 0 + it "returns the passed length" do + @io.truncate(4).should eql(4) + @io.truncate(10).should eql(10) + end + + it "truncated the underlying string down to the passed length" do + @io.truncate(4) + @io.string.should == "1234" + end + + it "does not create a copy of the underlying string" do + io = StringIO.new(str = "123456789") + io.truncate(4) + io.string.should equal(str) + end + + it "does not change the position" do + @io.pos = 7 + @io.truncate(4) + @io.pos.should eql(7) + end + + it "can grow a string to a larger size, padding it with \\000" do + @io.truncate(12) + @io.string.should == "123456789\000\000\000" + end + + it "raises an Errno::EINVAL when the passed length is negative" do + lambda { @io.truncate(-1) }.should raise_error(Errno::EINVAL) + lambda { @io.truncate(-10) }.should raise_error(Errno::EINVAL) + end + + it "tries to convert the passed length to an Integer using #to_int" do + obj = mock("to_int") + obj.should_receive(:to_int).and_return(4) + + @io.truncate(obj) + @io.string.should == "1234" + end + + it "returns the passed length Object, NOT the result of #to_int" do + obj = mock("to_int") + obj.should_receive(:to_int).and_return(4) + @io.truncate(obj).should equal(obj) + end + + it "raises a TypeError when the passed length can't be converted to an Integer" do + lambda { @io.truncate(Object.new) }.should raise_error(TypeError) + end +end + +describe "StringIO#truncate when self is not writable" do + it "raises an IOError" do + io = StringIO.new("test", "r") + lambda { io.truncate(2) }.should raise_error(IOError) + + io = StringIO.new("test") + io.close_write + lambda { io.truncate(2) }.should raise_error(IOError) + end +end |