1 files changed, 39 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/object/to_param_test.rb b/activesupport/test/core_ext/object/to_param_test.rb
new file mode 100644
index 0000000000..612156bd99
--- /dev/null
+++ b/activesupport/test/core_ext/object/to_param_test.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+require "active_support/core_ext/object/to_param"
+
+class ToParamTest < ActiveSupport::TestCase
+  class CustomString < String
+    def to_param
+      "custom-#{ self }"
+    end
+  end
+
+  def test_object
+    foo = Object.new
+    def foo.to_s; "foo" end
+    assert_equal "foo", foo.to_param
+  end
+
+  def test_nil
+    assert_nil nil.to_param
+  end
+
+  def test_boolean
+    assert_equal true, true.to_param
+    assert_equal false, false.to_param
+  end
+
+  def test_array
+    # Empty Array
+    assert_equal "", [].to_param
+
+    array = [1, 2, 3, 4]
+    assert_equal "1/2/3/4", array.to_param
+
+    # Array of different objects
+    array = [1, "3", { a: 1, b: 2 }, nil, true, false, CustomString.new("object")]
+    assert_equal "1/3/a=1&b=2//true/false/custom-object", array.to_param
+  end
+end