Copied: MacRuby/trunk/spec/frozen/language/BEGIN_spec.rb (from rev 3920, MacRuby/trunk/spec/frozen/language/BEGIN_spec_disabled.rb) (0 => 3922)

--- MacRuby/trunk/spec/frozen/language/BEGIN_spec.rb	                        (rev 0)
+++ MacRuby/trunk/spec/frozen/language/BEGIN_spec.rb	2010-04-13 05:26:55 UTC (rev 3922)
@@ -0,0 +1,57 @@
+require File.expand_path('../../spec_helper', __FILE__)
+
+describe "The BEGIN keyword" do
+  ruby_version_is "" ... "1.9" do
+    it "runs in a new isolated scope" do
+      lambda {
+        eval "BEGIN { var_in_begin = 'foo' }; var_in_begin"
+      }.should raise_error NameError
+
+      lambda {
+        outside_var = 'foo'
+        eval "BEGIN { outside_var }"
+      }.should raise_error NameError
+    end
+  end
+
+  ruby_version_is "1.9" do
+    it "runs in a shared scope" do
+      lambda {
+        eval "BEGIN { var_in_begin = 'foo' }; var_in_begin"
+      }.should_not raise_error NameError
+
+      lambda {
+        outside_var = 'foo'
+        eval "BEGIN { outside_var }"
+      }.should_not raise_error NameError
+    end
+
+    it "must appear in a top-level context" do
+      lambda do
+        eval "1.times{ BEGIN{ :begun }}"
+      end.should raise_error(SyntaxError)
+    end
+  end
+
+  it "runs first in a given code unit" do
+    o = Object.new
+    class << o
+      ARY = []
+      eval "ARY << 'foo'; BEGIN { ARY << 'bar' }"
+      def ary; ARY; end
+    end
+
+    o.ary.should == ['bar', 'foo']
+  end
+
+  it "runs multiple begins in FIFO order" do
+    o = Object.new
+    class << o
+      ARY = []
+      eval "BEGIN { ARY << 'foo' }; BEGIN { ARY << 'bar' }"
+      def ary; ARY; end
+    end
+
+    o.ary.should == ['foo', 'bar']
+  end
+end