1 files changed, 89 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/file_spec.rb b/spec/ruby/optional/capi/file_spec.rb
new file mode 100644
index 0000000000..2459dba979
--- /dev/null
+++ b/spec/ruby/optional/capi/file_spec.rb
@@ -0,0 +1,89 @@
+require File.expand_path('../spec_helper', __FILE__)
+
+load_extension('file')
+
+describe :rb_file_open, shared: true do
+  it "raises an ArgumentError if passed an empty mode string" do
+    touch @name
+    lambda { @s.rb_file_open(@name, "") }.should raise_error(ArgumentError)
+  end
+
+  it "opens a file in read-only mode with 'r'" do
+    touch(@name) { |f| f.puts "readable" }
+    @file = @s.send(@method, @name, "r")
+    @file.should be_an_instance_of(File)
+    @file.read.chomp.should == "readable"
+  end
+
+  it "creates and opens a non-existent file with 'w'" do
+    @file = @s.send(@method, @name, "w")
+    @file.write "writable"
+    @file.flush
+    File.read(@name).should == "writable"
+  end
+
+  it "truncates an existing file with 'w'" do
+    touch(@name) { |f| f.puts "existing" }
+    @file = @s.send(@method, @name, "w")
+    File.read(@name).should == ""
+  end
+end
+
+describe "C-API File function" do
+  before :each do
+    @s = CApiFileSpecs.new
+    @name = tmp("rb_file_open")
+  end
+
+  after :each do
+    @file.close if @file and !@file.closed?
+    rm_r @name
+  end
+
+  describe "rb_file_open" do
+    it_behaves_like :rb_file_open, :rb_file_open
+  end
+
+  describe "rb_file_open_str" do
+    it_behaves_like :rb_file_open, :rb_file_open_str
+  end
+
+  describe "rb_file_open_str" do
+    it "calls #to_path to convert on object to a path" do
+      path = mock("rb_file_open_str to_path")
+      path.should_receive(:to_path).and_return(@name)
+      @file = @s.rb_file_open_str(path, "w")
+    end
+
+    it "calls #to_str to convert an object to a path if #to_path isn't defined" do
+      path = mock("rb_file_open_str to_str")
+      path.should_receive(:to_str).and_return(@name)
+      @file = @s.rb_file_open_str(path, "w")
+    end
+  end
+
+  describe "FilePathValue" do
+    it "returns a String argument unchanged" do
+      obj = "path"
+      @s.FilePathValue(obj).should eql(obj)
+    end
+
+    it "does not call #to_str on a String" do
+      obj = "path"
+      obj.should_not_receive(:to_str)
+      @s.FilePathValue(obj).should eql(obj)
+    end
+
+    it "calls #to_path to convert an object to a String" do
+      obj = mock("FilePathValue to_path")
+      obj.should_receive(:to_path).and_return("path")
+      @s.FilePathValue(obj).should == "path"
+    end
+
+    it "calls #to_str to convert an object to a String if #to_path isn't defined" do
+      obj = mock("FilePathValue to_str")
+      obj.should_receive(:to_str).and_return("path")
+      @s.FilePathValue(obj).should == "path"
+    end
+  end
+end