diff options
Diffstat (limited to 'spec/ruby/core/io/shared/write.rb')
-rw-r--r-- | spec/ruby/core/io/shared/write.rb | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/spec/ruby/core/io/shared/write.rb b/spec/ruby/core/io/shared/write.rb new file mode 100644 index 0000000000..fd4b0af30e --- /dev/null +++ b/spec/ruby/core/io/shared/write.rb @@ -0,0 +1,72 @@ +# encoding: utf-8 +require File.expand_path('../../fixtures/classes', __FILE__) + +describe :io_write, shared: true do + before :each do + @filename = tmp("IO_syswrite_file") + $$.to_s + File.open(@filename, "w") do |file| + file.send(@method, "012345678901234567890123456789") + end + @file = File.open(@filename, "r+") + @readonly_file = File.open(@filename) + end + + after :each do + @readonly_file.close if @readonly_file + @file.close if @file + rm_r @filename + end + + it "coerces the argument to a string using to_s" do + (obj = mock('test')).should_receive(:to_s).and_return('a string') + @file.send(@method, obj) + end + + it "checks if the file is writable if writing more than zero bytes" do + lambda { @readonly_file.send(@method, "abcde") }.should raise_error(IOError) + end + + it "returns the number of bytes written" do + written = @file.send(@method, "abcde") + written.should == 5 + end + + it "invokes to_s on non-String argument" do + data = "abcdefgh9876" + (obj = mock(data)).should_receive(:to_s).and_return(data) + @file.send(@method, obj) + @file.seek(0) + @file.read(data.size).should == data + end + + it "writes all of the string's bytes without buffering if mode is sync" do + @file.sync = true + written = @file.send(@method, "abcde") + written.should == 5 + File.open(@filename) do |file| + file.read(10).should == "abcde56789" + end + end + + it "does not warn if called after IO#read" do + @file.read(5) + lambda { @file.send(@method, "fghij") }.should_not complain + end + + it "writes to the current position after IO#read" do + @file.read(5) + @file.send(@method, "abcd") + @file.rewind + @file.read.should == "01234abcd901234567890123456789" + end + + it "advances the file position by the count of given bytes" do + @file.send(@method, "abcde") + @file.read(10).should == "5678901234" + end + + it "raises IOError on closed stream" do + lambda { IOSpecs.closed_io.send(@method, "hello") }.should raise_error(IOError) + end + +end |