From 3a6fcb9b0d75394226360f4bafbe928a49d660dd Mon Sep 17 00:00:00 2001
From: Michael Miller <icy.arctic.fox@gmail.com>
Date: Mon, 23 Sep 2019 20:52:03 -0600
Subject: [PATCH] Fix value negation of attribute matcher

---
 src/spectator/matchers/attributes_matcher.cr | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/spectator/matchers/attributes_matcher.cr b/src/spectator/matchers/attributes_matcher.cr
index be3e178..93cd62a 100644
--- a/src/spectator/matchers/attributes_matcher.cr
+++ b/src/spectator/matchers/attributes_matcher.cr
@@ -39,7 +39,7 @@ module Spectator::Matchers
     def negated_match(actual : TestExpression(T)) : MatchData forall T
       snapshot = snapshot_values(actual.value)
       if match?(snapshot)
-        FailedMatchData.new("#{actual.label} has attributes #{expected.label}", **values(snapshot))
+        FailedMatchData.new("#{actual.label} has attributes #{expected.label}", **negated_values(snapshot))
       else
         SuccessfulMatchData.new
       end
@@ -79,5 +79,17 @@ module Spectator::Matchers
       }
       {% end %}
     end
+
+    # Produces the tuple for the failed negated match data from a snapshot of the attributes.
+    private def negated_values(snapshot)
+      {% begin %}
+      {
+        {% for attribute in ExpectedType.keys %}
+        {{"expected " + attribute.stringify}}: "Not #{expected.value[{{attribute.symbolize}}].inspect}",
+        {{"actual " + attribute.stringify}}:   snapshot[{{attribute.symbolize}}].inspect,
+        {% end %}
+      }
+      {% end %}
+    end
   end
 end