Add specs for File.mkfifo

Author: ahmadsherif

core/file/mkfifo_spec.rb

@@ -0,0 +1,51 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "File.mkfifo" do
+  platform_is_not os: [:windows] do
+    before do
+      @path = tmp('fifo')
+    end
+
+    after do
+      rm_r(@path)
+    end
+
+    context "when path passed responds to :to_path" do
+      it "creates a FIFO file at the path specified" do
+        File.mkfifo(@path)
+        File.ftype(@path).should == "fifo"
+      end
+    end
+
+    context "when path passed is not a String value" do
+      it "raises a TypeError" do
+        lambda { File.mkfifo(:"/tmp/fifo") }.should raise_error(TypeError)
+      end
+    end
+
+    context "when path does not exist" do
+      it "raises an Errno::ENOENT exception" do
+        lambda { File.mkfifo("/bogus/path") }.should raise_error(Errno::ENOENT)
+      end
+    end
+
+    it "creates a FIFO file at the passed path" do
+      File.mkfifo(@path.to_s)
+      File.ftype(@path).should == "fifo"
+    end
+
+    it "creates a FIFO file with passed mode & ~umask" do
+      File.mkfifo(@path, 0755)
+      File.stat(@path).mode.should == 010755 & ~File.umask
+    end
+
+    it "creates a FIFO file with a default mode of 0666 & ~umask" do
+      File.mkfifo(@path)
+      File.stat(@path).mode.should == 010666 & ~File.umask
+    end
+
+    it "returns 0 after creating the FIFO file" do
+      File.mkfifo(@path).should == 0
+    end
+  end
+end