Merge pull request #13 from eropple/interpolation-for-in-operator

Interpolation for in operator

json_logic.gemspec

@@ -23,4 +23,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'bundler',  '~> 1.13'
   spec.add_development_dependency 'rake',     '~> 10.0'
   spec.add_development_dependency 'minitest', '~> 5.0'
+  spec.add_development_dependency 'pry'
 end

lib/json_logic/operation.rb

@@ -92,7 +92,7 @@ class Operation
       '%'     => ->(v, d) { v.map(&:to_i).reduce(:%) },
       '^'     => ->(v, d) { v.map(&:to_f).reduce(:**) },
       'merge' => ->(v, d) { v.flatten },
-      'in'    => ->(v, d) { v[1].include? v[0] },
+      'in'    => ->(v, d) { interpolated_block(v[1], d).include? v[0] },
       'cat'   => ->(v, d) { v.map(&:to_s).join },
       'log'   => ->(v, d) { puts v }
     }

test/json_logic_test.rb

@@ -70,4 +70,26 @@ def test_array_with_logic
       { "x" => true, "y" => 42}
     )
   end
+
+  def test_in_with_variable
+    assert_equal true, JSONLogic.apply(
+      {
+        "in" => [
+          {"var" => "x"},
+          {"var" => "x"}
+        ]
+      },
+      { "x" => "foo"}
+    )
+
+    assert_equal false, JSONLogic.apply(
+      {
+        "in" => [
+          {"var" => "x"},
+          {"var" => "y"},
+        ]
+      },
+      { "x" => "foo", "y" => "bar" }
+    )
+  end
 end