1 files changed, 56 insertions, 0 deletions
diff --git a/spec/ruby/core/dir/foreach_spec.rb b/spec/ruby/core/dir/foreach_spec.rb
new file mode 100644
index 0000000000..e606b4f65c
--- /dev/null
+++ b/spec/ruby/core/dir/foreach_spec.rb
@@ -0,0 +1,56 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/common', __FILE__)
+
+describe "Dir.foreach" do
+  before :all do
+    DirSpecs.create_mock_dirs
+  end
+
+  after :all do
+    DirSpecs.delete_mock_dirs
+  end
+
+  it "yields all names in an existing directory to the provided block" do
+    a, b = [], []
+
+    Dir.foreach(DirSpecs.mock_dir) {|f| a << f}
+    Dir.foreach("#{DirSpecs.mock_dir}/deeply/nested") {|f| b << f}
+
+    a.sort.should == DirSpecs.expected_paths
+    b.sort.should == %w|. .. .dotfile.ext directory|
+  end
+
+  it "returns nil when successful" do
+    Dir.foreach(DirSpecs.mock_dir) {|f| f}.should == nil
+  end
+
+  it "calls #to_path on non-String arguments" do
+    p = mock('path')
+    p.should_receive(:to_path).and_return(DirSpecs.mock_dir)
+    Dir.foreach(p).to_a
+  end
+
+  it "raises a SystemCallError if passed a nonexistent directory" do
+    lambda { Dir.foreach(DirSpecs.nonexistent) {} }.should raise_error(SystemCallError)
+  end
+
+  it "returns an Enumerator if no block given" do
+    Dir.foreach(DirSpecs.mock_dir).should be_an_instance_of(Enumerator)
+    Dir.foreach(DirSpecs.mock_dir).to_a.sort.should == DirSpecs.expected_paths
+  end
+
+  describe "when no block is given" do
+    it "returns an Enumerator" do
+      Dir.foreach(DirSpecs.mock_dir).should be_an_instance_of(Enumerator)
+      Dir.foreach(DirSpecs.mock_dir).to_a.sort.should == DirSpecs.expected_paths
+    end
+
+    describe "returned Enumerator" do
+      describe "size" do
+        it "should return nil" do
+          Dir.foreach(DirSpecs.mock_dir).size.should == nil
+        end
+      end
+    end
+  end
+end