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Diffstat (limited to 'spec/ruby/library/stringio/append_spec.rb')
-rw-r--r-- | spec/ruby/library/stringio/append_spec.rb | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/append_spec.rb b/spec/ruby/library/stringio/append_spec.rb new file mode 100644 index 0000000000..ff0dc233cd --- /dev/null +++ b/spec/ruby/library/stringio/append_spec.rb @@ -0,0 +1,84 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "StringIO#<< when passed [Object]" do + before :each do + @io = StringIO.new("example") + end + + it "returns self" do + (@io << "just testing").should equal(@io) + end + + it "writes the passed argument onto self" do + (@io << "just testing") + @io.string.should == "just testing" + (@io << " and more testing") + @io.string.should == "just testing and more testing" + end + + it "writes the passed argument at the current position" do + @io.pos = 5 + @io << "<test>" + @io.string.should == "examp<test>" + end + + it "pads self with \\000 when the current position is after the end" do + @io.pos = 15 + @io << "just testing" + @io.string.should == "example\000\000\000\000\000\000\000\000just testing" + end + + it "taints self's String when the passed argument is tainted" do + (@io << "test".taint) + @io.string.tainted?.should be_true + end + + it "does not taint self when the passed argument is tainted" do + (@io << "test".taint) + @io.tainted?.should be_false + end + + it "updates self's position" do + @io << "test" + @io.pos.should eql(4) + end + + it "tries to convert the passed argument to a String using #to_s" do + obj = mock("to_s") + obj.should_receive(:to_s).and_return("Test") + + (@io << obj).string.should == "Testple" + end +end + +describe "StringIO#<< when self is not writable" do + it "raises an IOError" do + io = StringIO.new("test", "r") + lambda { io << "test" }.should raise_error(IOError) + + io = StringIO.new("test") + io.close_write + lambda { io << "test" }.should raise_error(IOError) + end +end + +describe "StringIO#<< when in append mode" do + before :each do + @io = StringIO.new("example", "a") + end + + it "appends the passed argument to the end of self, ignoring current position" do + (@io << ", just testing") + @io.string.should == "example, just testing" + + @io.pos = 3 + (@io << " and more testing") + @io.string.should == "example, just testing and more testing" + end + + it "correctly updates self's position" do + @io << ", testing" + @io.pos.should eql(16) + end +end |