Add spec for inline failing ruby call, gh-42

spec/rfunctions_spec.rb

@@ -92,7 +92,7 @@
     end
   end
 
-  describe 'calling a Ruby function from Lua' do
+  context 'calling a Ruby function from Lua' do
 
     it 'may return a single value' do
 
@@ -157,17 +157,6 @@
       )
     end
 
-    it 'raise exceptions (Ruby -> Lua -> Ruby and back)' do
-
-      @s.function :do_fail do
-        raise 'fail!'
-      end
-
-      expect(lambda {
-        @s.eval('return do_fail()')
-      }).to raise_error(RuntimeError)
-    end
-
     it 'counts the animals correctly' do
 
       @s.function 'key_up' do |table|
@@ -291,5 +280,44 @@
       expect(@s.instance_variable_get(:@callbacks).size).to eq 1
     end
   end
+
+  context 'Ruby functions and exceptions' do
+
+    it 'raises exceptions (Ruby -> Lua -> Ruby and back)' do
+
+      @s.function :do_fail do
+        raise 'fail!'
+      end
+
+      expect {
+        @s.eval('return do_fail()')
+      }.to raise_error(RuntimeError)
+    end
+
+    it 'raises exceptions (Ruby -> Lua -> Ruby and back)' do
+
+      @s.function :do_fail do
+        raise 'fail!'
+      end
+
+      expect {
+        @s.eval('do_fail()')
+      }.to raise_error(RuntimeError)
+    end
+
+    it 'raises exceptions (gh-42)' do
+
+      @s.function :no_fail do
+        1
+      end
+      @s.function :do_fail do
+        raise 'fail!'
+      end
+
+      expect {
+        @s.eval('do_fail(); no_fail()')
+      }.to raise_error(RuntimeError)
+    end
+  end
 end