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Diffstat (limited to 'spec/ruby/core/io/advise_spec.rb')
-rw-r--r-- | spec/ruby/core/io/advise_spec.rb | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/spec/ruby/core/io/advise_spec.rb b/spec/ruby/core/io/advise_spec.rb new file mode 100644 index 0000000000..460b50a59d --- /dev/null +++ b/spec/ruby/core/io/advise_spec.rb @@ -0,0 +1,97 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO#advise" do + before :each do + @io = IOSpecs.io_fixture "lines.txt" + end + + after :each do + @io.close unless @io.closed? + end + + it "raises a TypeError if advise is not a Symbol" do + lambda { + @io.advise("normal") + }.should raise_error(TypeError) + end + + it "raises a TypeError if offsert cannot be coerced to an Integer" do + lambda { + @io.advise(:normal, "wat") + }.should raise_error(TypeError) + end + + it "raises a TypeError if len cannot be coerced to an Integer" do + lambda { + @io.advise(:normal, 0, "wat") + }.should raise_error(TypeError) + end + + it "raises a RangeError if offset is too big" do + lambda { + @io.advise(:normal, 10 ** 32) + }.should raise_error(RangeError) + end + + it "raises a RangeError if len is too big" do + lambda { + @io.advise(:normal, 0, 10 ** 32) + }.should raise_error(RangeError) + end + + it "raises a NotImplementedError if advise is not recognized" do + lambda{ + @io.advise(:foo) + }.should raise_error(NotImplementedError) + end + + it "supports the normal advice type" do + @io.advise(:normal).should be_nil + end + + it "supports the sequential advice type" do + @io.advise(:sequential).should be_nil + end + + it "supports the random advice type" do + @io.advise(:random).should be_nil + end + + it "supports the dontneed advice type" do + @io.advise(:dontneed).should be_nil + end + + it "supports the noreuse advice type" do + @io.advise(:noreuse).should be_nil + end + + platform_is_not :linux do + it "supports the willneed advice type" do + @io.advise(:willneed).should be_nil + end + end + + platform_is :linux do + it "supports the willneed advice type" do + require 'etc' + uname = if Etc.respond_to?(:uname) + Etc.uname[:release] + else + `uname -r`.chomp + end + if (uname.split('.').map(&:to_i) <=> [3,6]) < 0 + # [ruby-core:65355] tmpfs is not supported + 1.should == 1 + else + @io.advise(:willneed).should be_nil + end + end + end + + it "raises an IOError if the stream is closed" do + @io.close + lambda { @io.advise(:normal) }.should raise_error(IOError) + end +end |