Fix warnings from Crystal 1.5.0 regarding positional parameters

src/spectator/matchers/have_predicate_matcher.cr

@@ -17,7 +17,7 @@ module Spectator::Matchers
     # Actually performs the test against the expression.
     def match(actual : Expression(T)) : MatchData forall T
       snapshot = snapshot_values(actual.value)
-      if match?(snapshot)
+      if values_match?(snapshot)
         SuccessfulMatchData.new(description)
       else
         FailedMatchData.new(description, "#{actual.label} does not have #{expected.label}", values(snapshot).to_a)
@@ -28,13 +28,18 @@ module Spectator::Matchers
     # A successful match with `#match` should normally fail for this method, and vice-versa.
     def negated_match(actual : Expression(T)) : MatchData forall T
       snapshot = snapshot_values(actual.value)
-      if match?(snapshot)
+      if values_match?(snapshot)
         FailedMatchData.new(description, "#{actual.label} has #{expected.label}", values(snapshot).to_a)
       else
         SuccessfulMatchData.new(description)
       end
     end
 
+    def match?(actual : Expression(T)) : Bool forall T
+      snapshot = snapshot_values(actual.value)
+      values_match?(snapshot)
+    end
+
     # Message displayed when the matcher isn't satisfied.
     #
     # This is only called when `#match?` returns false.
@@ -69,7 +74,7 @@ module Spectator::Matchers
     end
 
     # Checks if all predicate methods from the snapshot of them are satisfied.
-    private def match?(snapshot) : Bool
+    private def values_match?(snapshot) : Bool
       # Test each predicate and immediately return false if one is false.
       {% for attribute in ExpectedType.keys %}
       return false unless snapshot[{{attribute.symbolize}}]

src/spectator/mocks/double.cr

@@ -153,7 +153,7 @@ module Spectator
       yield
     end
 
-    private def _spectator_stub_fallback(call : MethodCall, _type, &)
+    private def _spectator_stub_fallback(call : MethodCall, type, &)
       _spectator_stub_fallback(call) { yield }
     end
 
@@ -167,7 +167,7 @@ module Spectator
       raise UnexpectedMessage.new("#{_spectator_stubbed_name} received unexpected message #{call}")
     end
 
-    private def _spectator_abstract_stub_fallback(call : MethodCall, _type)
+    private def _spectator_abstract_stub_fallback(call : MethodCall, type)
       _spectator_abstract_stub_fallback(call)
     end
 

src/spectator/mocks/null_stub.cr

@@ -5,7 +5,7 @@ module Spectator
   # Stub that does nothing and returns nil.
   class NullStub < TypedStub(Nil)
     # Invokes the stubbed implementation.
-    def call(_call : MethodCall) : Nil
+    def call(call : MethodCall) : Nil
     end
   end
 end

src/spectator/mocks/value_stub.cr

@@ -7,7 +7,7 @@ module Spectator
   # Stub that responds with a static value.
   class ValueStub(T) < TypedStub(T)
     # Invokes the stubbed implementation.
-    def call(_call : MethodCall) : T
+    def call(call : MethodCall) : T
       @value
     end
 

src/spectator/null_node_filter.cr

@@ -9,7 +9,7 @@ module Spectator
     end
 
     # Checks whether the node satisfies the filter.
-    def includes?(_node) : Bool
+    def includes?(node) : Bool
       @match
     end
   end