Try different method

This should only have ExceptionMatcher's match data types

spec/helpers/matchers_helper.cr

@@ -1,6 +1,5 @@
 # Retrieves a value from the `NamedTuple` returned by `Spectator::Matchers::MatchData#values`.
 def match_data_value(match_data, key)
-  puts typeof(match_data.values)
   match_data.values.fetch(key) { raise "#{key} is missing" }
 end
 
@@ -8,6 +7,15 @@ end
 # from a `Spectator::Matchers::PrefixedValue`
 # in a `NamedTuple` returned by `Spectator::Matchers::MatchData#values`.
 def match_data_prefix(match_data, key)
+  prefix = match_data.values.fetch(key) { raise "#{key} is missing" }
+  if prefix.responds_to?(:value)
+    {to_s: prefix.to_s, value: prefix.value}
+  else
+    {to_s: prefix.to_s, value: prefix}
+  end
+end
+
+def match_data_prefix2(match_data, key)
   puts typeof(match_data.values)
   prefix = match_data.values.fetch(key) { raise "#{key} is missing" }
   if prefix.responds_to?(:value)

spec/matchers/exception_matcher_spec.cr

@@ -94,7 +94,7 @@ describe Spectator::Matchers::ExceptionMatcher do
             partial = new_block_partial { raise ArgumentError.new }
             matcher = Spectator::Matchers::ExceptionMatcher(KeyError, Nil).new
             match_data = matcher.match(partial)
-            match_data_prefix(match_data, :"expected type")[:value].should eq(KeyError)
+            match_data_prefix2(match_data, :"expected type")[:value].should eq(KeyError)
           end
         end
 
@@ -103,7 +103,7 @@ describe Spectator::Matchers::ExceptionMatcher do
             partial = new_block_partial { raise ArgumentError.new }
             matcher = Spectator::Matchers::ExceptionMatcher(KeyError, Nil).new
             match_data = matcher.match(partial)
-            match_data_prefix(match_data, :"actual type")[:value].should eq(ArgumentError)
+            match_data_prefix2(match_data, :"actual type")[:value].should eq(ArgumentError)
           end
 
           context "when nothing is raised" do
@@ -111,7 +111,7 @@ describe Spectator::Matchers::ExceptionMatcher do
               partial = new_block_partial { 42 }
               matcher = Spectator::Matchers::ExceptionMatcher(KeyError, Nil).new
               match_data = matcher.match(partial)
-              match_data_prefix(match_data, :"actual type")[:value].should eq(Nil)
+              match_data_prefix2(match_data, :"actual type")[:value].should eq(Nil)
             end
           end
         end
@@ -122,7 +122,7 @@ describe Spectator::Matchers::ExceptionMatcher do
             partial = new_block_partial { raise ArgumentError.new("foobar") }
             matcher = Spectator::Matchers::ExceptionMatcher(KeyError, Regex).new(regex, "label")
             match_data = matcher.match(partial)
-            match_data_prefix(match_data, :"expected message")[:value].should eq(regex)
+            match_data_prefix2(match_data, :"expected message")[:value].should eq(regex)
           end
         end
 
@@ -132,7 +132,7 @@ describe Spectator::Matchers::ExceptionMatcher do
             partial = new_block_partial { raise ArgumentError.new(message) }
             matcher = Spectator::Matchers::ExceptionMatcher(KeyError, Regex).new(/baz/, "label")
             match_data = matcher.match(partial)
-            match_data_prefix(match_data, :"actual message")[:value].should eq(message)
+            match_data_prefix2(match_data, :"actual message")[:value].should eq(message)
           end
         end
       end