Allow actual collection to be enumerable, not just array

Force expected collection to an array.

src/spectator/matchers/array_matcher.cr

@@ -4,12 +4,13 @@ require "./unordered_array_matcher"
 module Spectator::Matchers
   # Matcher for checking that the contents of one array (or similar type)
   # has the exact same contents as another and in the same order.
-  struct ArrayMatcher(ExpectedType) < ValueMatcher(Array(ExpectedType))
+  struct ArrayMatcher(ExpectedType) < ValueMatcher(Enumerable(ExpectedType))
     # Determines whether the matcher is satisfied with the partial given to it.
     # `MatchData` is returned that contains information about the match.
     def match(partial)
       actual = partial.actual.to_a
-      values = ExpectedActual.new(expected, label, actual, partial.label)
+      expected_elements = expected.to_a
+      values = ExpectedActual.new(expected_elements, label, actual, partial.label)
       if values.expected.size == values.actual.size
         index = 0
         values.expected.zip(values.actual) do |expected, element|
@@ -25,14 +26,14 @@ module Spectator::Matchers
     # Creates the value matcher.
     # The label should be a string representation of the expectation.
     # The expected value is stored for later use.
-    def initialize(expected : Array(ExpectedType), label : String)
+    def initialize(expected : Enumerable(ExpectedType), label : String)
       super
     end
 
     # Creates the value matcher.
     # The label is generated by calling `#to_s` on the expected value.
     # The expected value is stored for later use.
-    def initialize(expected : Array(ExpectedType))
+    def initialize(expected : Enumerable(ExpectedType))
       super
     end
 

src/spectator/matchers/unordered_array_matcher.cr

@@ -3,14 +3,15 @@ require "./value_matcher"
 module Spectator::Matchers
   # Matcher for checking that the contents of one array (or similar type)
   # has the exact same contents as another, but in any order.
-  struct UnorderedArrayMatcher(ExpectedType) < ValueMatcher(Array(ExpectedType))
+  struct UnorderedArrayMatcher(ExpectedType) < ValueMatcher(Enumerable(ExpectedType))
     # Determines whether the matcher is satisfied with the partial given to it.
     # `MatchData` is returned that contains information about the match.
     def match(partial)
+      expected_elements = expected.to_a
       actual = partial.actual.to_a
       missing, extra = array_diff(expected, actual)
 
-      values = ExpectedActual.new(expected, label, actual, partial.label)
+      values = ExpectedActual.new(expected_elements, label, actual, partial.label)
       if missing.empty? && extra.empty?
         IdenticalMatchData.new(values)
       else
@@ -40,14 +41,14 @@ module Spectator::Matchers
     # Creates the value matcher.
     # The label should be a string representation of the expectation.
     # The expected value is stored for later use.
-    def initialize(expected : Array(ExpectedType), label : String)
+    def initialize(expected : Enumerable(ExpectedType), label : String)
       super
     end
 
     # Creates the value matcher.
     # The label is generated by calling `#to_s` on the expected value.
     # The expected value is stored for later use.
-    def initialize(expected : Array(ExpectedType))
+    def initialize(expected : Enumerable(ExpectedType))
       super
     end