diff --git a/test/test_tags.rb b/test/test_tags.rb
index c58c9c7e..6179077e 100644
--- a/test/test_tags.rb
+++ b/test/test_tags.rb
@@ -273,22 +273,19 @@ CONTENT
         end
       end
 
-      context "when invalid" do
-        setup do
-          @gist = "mattr-24081a1d93d2898ecf0f"
-          @filename = "myfile.ext"
-          content = <<CONTENT
+      should "raise SyntaxError when invalid" do
+        @gist = "mattr-24081a1d93d2898ecf0f"
+        @filename = "myfile.ext"
+        content = <<CONTENT
   ---
   title: My Cool Gist
   ---
 
   {% gist #{@gist} #{@filename} %}
 CONTENT
-          create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
-        end
 
-        should "write script tag with specific file in gist" do
-          assert_match "Error parsing gist id", @result
+        assert_raise SyntaxError do
+          create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
         end
       end
     end
@@ -313,7 +310,7 @@ CONTENT
     end
 
     context "with blank gist id" do
-      setup do
+      should "raise SyntaxError" do
         content = <<CONTENT
 ---
 title: My Cool Gist
@@ -321,16 +318,15 @@ title: My Cool Gist
 
 {% gist %}
 CONTENT
-        create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
-      end
 
-      should "output error message" do
-        assert_match "Error parsing gist id", @result
+        assert_raise SyntaxError do
+          create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
+        end
       end
     end
 
     context "with invalid gist id" do
-      setup do
+      should "raise SyntaxError" do
         invalid_gist = 'invalid'
         content = <<CONTENT
 ---
@@ -339,11 +335,10 @@ title: My Cool Gist
 
 {% gist #{invalid_gist} %}
 CONTENT
-        create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
-      end
 
-      should "output error message" do
-        assert_match "Error parsing gist id", @result
+        assert_raise SyntaxError do
+          create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
+        end
       end
     end
   end