From 2d4e0e400ff72af164e00aa28ebbd276a641f3b6 Mon Sep 17 00:00:00 2001
From: Michael Schubert & Sam Obukwelu <pair+schubert+sam@pivotallabs.com>
Date: Thu, 8 Mar 2012 10:58:25 -0500
Subject: [PATCH] Fix for Compass.shared_extension_paths when HOME is a
 relative path.

This should fully resolve https://github.com/chriseppstein/compass/issues/364 for when HOME is not just nil but also "." (or any other relative path). Added a complete set of unit tests around the method as well.
---
 lib/compass.rb                    |  2 ++
 test/units/compass_module_test.rb | 36 +++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 test/units/compass_module_test.rb

diff --git a/lib/compass.rb b/lib/compass.rb
index 2d097fcb..1ac47c13 100644
--- a/lib/compass.rb
+++ b/lib/compass.rb
@@ -21,6 +21,8 @@ module Compass
       else
         []
       end
+    rescue ArgumentError # If HOME is relative
+      []
     end
   end
   module_function :base_directory, :lib_directory, :shared_extension_paths
diff --git a/test/units/compass_module_test.rb b/test/units/compass_module_test.rb
new file mode 100644
index 00000000..0e9e530b
--- /dev/null
+++ b/test/units/compass_module_test.rb
@@ -0,0 +1,36 @@
+require File.join(File.dirname(__FILE__), "..", "test_helper")
+
+class CompassModuleTest < Test::Unit::TestCase
+
+  def setup
+    Compass.reset_configuration!
+    Compass.instance_variable_set("@shared_extension_paths", nil)
+    @original_home = ENV["HOME"]
+  end
+
+  def teardown
+    ENV["HOME"] = @original_home
+    Compass.reset_configuration!
+  end
+
+  def test_shared_extension_paths_with_valid_home
+    ENV["HOME"] = "/"
+    assert_equal ["/.compass/extensions"], Compass.shared_extension_paths
+  end
+
+  def test_shared_extension_paths_with_nil_home
+    ENV["HOME"] = nil
+    assert_equal [], Compass.shared_extension_paths
+  end
+
+  def test_shared_extension_paths_with_file_home
+    ENV["HOME"] = __FILE__
+    assert_equal [], Compass.shared_extension_paths
+  end
+
+  def test_shared_extension_paths_with_relative_home
+    ENV["HOME"] = "."
+    assert_equal [], Compass.shared_extension_paths
+  end
+
+end