1 files changed, 86 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..b77ed53ad4
--- /dev/null
+++ b/spec/ruby/core/io/advise_spec.rb
@@ -0,0 +1,86 @@
+# -*- encoding: utf-8 -*-
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+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
+    -> {
+      @io.advise("normal")
+    }.should.raise(TypeError)
+  end
+
+  it "raises a TypeError if offset cannot be coerced to an Integer" do
+    -> {
+      @io.advise(:normal, "wat")
+    }.should.raise(TypeError)
+  end
+
+  it "raises a TypeError if len cannot be coerced to an Integer" do
+    -> {
+      @io.advise(:normal, 0, "wat")
+    }.should.raise(TypeError)
+  end
+
+  it "raises a RangeError if offset is too big" do
+    -> {
+      @io.advise(:normal, 10 ** 32)
+    }.should.raise(RangeError)
+  end
+
+  it "raises a RangeError if len is too big" do
+    -> {
+      @io.advise(:normal, 0, 10 ** 32)
+    }.should.raise(RangeError)
+  end
+
+  it "raises a NotImplementedError if advise is not recognized" do
+    ->{
+      @io.advise(:foo)
+    }.should.raise(NotImplementedError)
+  end
+
+  it "supports the normal advice type" do
+    @io.advise(:normal).should == nil
+  end
+
+  it "supports the sequential advice type" do
+    @io.advise(:sequential).should == nil
+  end
+
+  it "supports the random advice type" do
+    @io.advise(:random).should == nil
+  end
+
+  it "supports the dontneed advice type" do
+    @io.advise(:dontneed).should == nil
+  end
+
+  it "supports the noreuse advice type" do
+    @io.advise(:noreuse).should == nil
+  end
+
+  platform_is_not :linux do
+    it "supports the willneed advice type" do
+      @io.advise(:willneed).should == nil
+    end
+  end
+
+  guard -> { platform_is :linux and kernel_version_is '3.6' } do # [ruby-core:65355] tmpfs is not supported
+    it "supports the willneed advice type" do
+      @io.advise(:willneed).should == nil
+    end
+  end
+
+  it "raises an IOError if the stream is closed" do
+    @io.close
+    -> { @io.advise(:normal) }.should.raise(IOError)
+  end
+end