Move test selection out of stategy

lib/mutant/config.rb

@@ -29,5 +29,26 @@ module Mutant
       self
     end
 
+    # Return tests for mutation
+    #
+    # TODO: This logic is now centralized but still fucked.
+    #
+    # @param [Mutation] mutation
+    #
+    # @return [Enumerable<Test>]
+    #
+    # @api private
+    #
+    def tests(subject)
+      subject.match_expressions.each do |match_expression|
+        tests = strategy.all_tests.select do |test|
+          match_expression.prefix?(test.expression)
+        end
+        return tests if tests.any?
+      end
+
+      EMPTY_ARRAY
+    end
+
   end # Config
 end # Mutant

lib/mutant/runner/subject.rb

@@ -64,7 +64,7 @@ module Mutant
       # @api private
       #
       def tests
-        config.strategy.tests(subject)
+        config.tests(subject)
       end
       memoize :tests
 

lib/mutant/strategy.rb

@@ -62,27 +62,6 @@ module Mutant
     #
     abstract_method :all_tests
 
-    # Return tests for mutation
-    #
-    # TODO: This logic is now centralized but still fucked.
-    #
-    # @param [Mutation] mutation
-    #
-    # @return [Enumerable<Test>]
-    #
-    # @api private
-    #
-    def tests(subject)
-      subject.match_expressions.each do |match_expression|
-        tests = all_tests.select do |test|
-          match_expression.prefix?(test.expression)
-        end
-        return tests if tests.any?
-      end
-
-      EMPTY_ARRAY
-    end
-
     # Null strategy that never kills a mutation
     class Null < self
 

spec/unit/mutant/runner/subject_spec.rb

@@ -30,7 +30,7 @@ describe Mutant::Runner::Subject, '#success?' do
   let(:tests) { [double('test a'), double('test b')] }
 
   before do
-    expect(strategy).to receive(:tests).with(mutation_subject).and_return(tests)
+    expect(config).to receive(:tests).with(mutation_subject).and_return(tests)
     expect(Mutant::Runner).to receive(:run).with(config, mutation_a, tests).and_return(runner_a)
     expect(Mutant::Runner).to receive(:run).with(config, mutation_b, tests).and_return(runner_b)
   end