1 files changed, 96 insertions, 0 deletions
diff --git a/spec/rubyspec/core/io/advise_spec.rb b/spec/rubyspec/core/io/advise_spec.rb
new file mode 100644
index 0000000000..bd3bf24bec
--- /dev/null
+++ b/spec/rubyspec/core/io/advise_spec.rb
@@ -0,0 +1,96 @@
+# -*- 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
+    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
+    else
+      it "supports the willneed advice type" do
+        @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