diff options
Diffstat (limited to 'spec/ruby/core/io/printf_spec.rb')
-rw-r--r-- | spec/ruby/core/io/printf_spec.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/spec/ruby/core/io/printf_spec.rb b/spec/ruby/core/io/printf_spec.rb new file mode 100644 index 0000000000..34be4c8e79 --- /dev/null +++ b/spec/ruby/core/io/printf_spec.rb @@ -0,0 +1,32 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO#printf" do + before :each do + @name = tmp("io_printf.txt") + @io = new_io @name + @io.sync = true + end + + after :each do + @io.close if @io + rm_r @name + end + + it "calls #to_str to convert the format object to a String" do + obj = mock("printf format") + obj.should_receive(:to_str).and_return("%s") + + @io.printf obj, "printf" + File.read(@name).should == "printf" + end + + it "writes the #sprintf formatted string" do + @io.printf "%d %s", 5, "cookies" + File.read(@name).should == "5 cookies" + end + + it "raises IOError on closed stream" do + lambda { IOSpecs.closed_io.printf("stuff") }.should raise_error(IOError) + end +end |