9 files changed, 48 insertions, 8 deletions
diff --git a/activesupport/test/abstract_unit.rb b/activesupport/test/abstract_unit.rb
index 3ac11e0fe0..f214898145 100644
--- a/activesupport/test/abstract_unit.rb
+++ b/activesupport/test/abstract_unit.rb
@@ -38,4 +38,8 @@ class ActiveSupport::TestCase
   private def jruby_skip(message = "")
     skip message if defined?(JRUBY_VERSION)
   end
+
+  def frozen_error_class
+    Object.const_defined?(:FrozenError) ? FrozenError : RuntimeError
+  end
 end
diff --git a/activesupport/test/cache/behaviors/cache_store_behavior.rb b/activesupport/test/cache/behaviors/cache_store_behavior.rb
index 73a9b2a71c..bdc689b8b4 100644
--- a/activesupport/test/cache/behaviors/cache_store_behavior.rb
+++ b/activesupport/test/cache/behaviors/cache_store_behavior.rb
@@ -174,6 +174,18 @@ module CacheStoreBehavior
     assert_equal "bar", @cache.read("foo")
   end
 
+  def test_unversioned_cache_key
+    obj = Object.new
+    def obj.cache_key
+      "foo"
+    end
+    def obj.cache_key_with_version
+      "foo-v1"
+    end
+    @cache.write(obj, "bar")
+    assert_equal "bar", @cache.read("foo")
+  end
+
   def test_array_as_cache_key
     @cache.write([:fu, "foo"], "bar")
     assert_equal "bar", @cache.read("fu/foo")
diff --git a/activesupport/test/core_ext/duration_test.rb b/activesupport/test/core_ext/duration_test.rb
index dbee543644..4a02f27def 100644
--- a/activesupport/test/core_ext/duration_test.rb
+++ b/activesupport/test/core_ext/duration_test.rb
@@ -71,6 +71,8 @@ class DurationTest < ActiveSupport::TestCase
     assert_equal "7 days",                          7.days.inspect
     assert_equal "1 week",                          1.week.inspect
     assert_equal "2 weeks",                         1.fortnight.inspect
+    assert_equal "0 seconds",                       (10 % 5.seconds).inspect
+    assert_equal "10 minutes",                      (10.minutes + 0.seconds).inspect
   end
 
   def test_inspect_locale
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 746d7ad416..17952e9fc7 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -446,7 +446,7 @@ class HashExtTest < ActiveSupport::TestCase
     original.freeze
     assert_nothing_raised { original.except(:a) }
 
-    assert_raise(RuntimeError) { original.except!(:a) }
+    assert_raise(frozen_error_class) { original.except!(:a) }
   end
 
   def test_except_does_not_delete_values_in_original
diff --git a/activesupport/test/core_ext/object/blank_test.rb b/activesupport/test/core_ext/object/blank_test.rb
index 749e59ec00..954f415383 100644
--- a/activesupport/test/core_ext/object/blank_test.rb
+++ b/activesupport/test/core_ext/object/blank_test.rb
@@ -16,8 +16,8 @@ class BlankTest < ActiveSupport::TestCase
     end
   end
 
-  BLANK = [ EmptyTrue.new, nil, false, "", "   ", "  \n\t  \r ", "　", "\u00a0", [], {} ]
-  NOT   = [ EmptyFalse.new, Object.new, true, 0, 1, "a", [nil], { nil => 0 }, Time.now ]
+  BLANK = [ EmptyTrue.new, nil, false, "", "   ", "  \n\t  \r ", "　", "\u00a0", [], {}, " ".encode("UTF-16LE") ]
+  NOT   = [ EmptyFalse.new, Object.new, true, 0, 1, "a", [nil], { nil => 0 }, Time.now, "my value".encode("UTF-16LE") ]
 
   def test_blank
     BLANK.each { |v| assert_equal true, v.blank?,  "#{v.inspect} should be blank" }
diff --git a/activesupport/test/digest_test.rb b/activesupport/test/digest_test.rb
index 5dec75b9fe..83ff2a8d83 100644
--- a/activesupport/test/digest_test.rb
+++ b/activesupport/test/digest_test.rb
@@ -16,7 +16,7 @@ class DigestTest < ActiveSupport::TestCase
     digest = ActiveSupport::Digest.hexdigest("hello friend")
 
     assert_equal 32, digest.length
-    assert_equal ::Digest::SHA1.hexdigest("hello friend").truncate(32), digest
+    assert_equal ::Digest::SHA1.hexdigest("hello friend")[0...32], digest
   ensure
     ActiveSupport::Digest.hash_digest_class = original_hash_digest_class
   end
diff --git a/activesupport/test/encrypted_configuration_test.rb b/activesupport/test/encrypted_configuration_test.rb
index 0bc915be82..93ccf457de 100644
--- a/activesupport/test/encrypted_configuration_test.rb
+++ b/activesupport/test/encrypted_configuration_test.rb
@@ -10,8 +10,10 @@ class EncryptedConfigurationTest < ActiveSupport::TestCase
     @credentials_key_path = File.join(Dir.tmpdir, "master.key")
     File.write(@credentials_key_path, ActiveSupport::EncryptedConfiguration.generate_key)
 
-    @credentials = ActiveSupport::EncryptedConfiguration.new \
-      config_path: @credentials_config_path, key_path: @credentials_key_path, env_key: "RAILS_MASTER_KEY"
+    @credentials = ActiveSupport::EncryptedConfiguration.new(
+      config_path: @credentials_config_path, key_path: @credentials_key_path,
+      env_key: "RAILS_MASTER_KEY", raise_if_missing_key: true
+    )
   end
 
   teardown do
diff --git a/activesupport/test/encrypted_file_test.rb b/activesupport/test/encrypted_file_test.rb
index 7259726d08..ba3bbef903 100644
--- a/activesupport/test/encrypted_file_test.rb
+++ b/activesupport/test/encrypted_file_test.rb
@@ -12,8 +12,9 @@ class EncryptedFileTest < ActiveSupport::TestCase
     @key_path = File.join(Dir.tmpdir, "content.txt.key")
     File.write(@key_path, ActiveSupport::EncryptedFile.generate_key)
 
-    @encrypted_file = ActiveSupport::EncryptedFile.new \
-      content_path: @content_path, key_path: @key_path, env_key: "CONTENT_KEY"
+    @encrypted_file = ActiveSupport::EncryptedFile.new(
+      content_path: @content_path, key_path: @key_path, env_key: "CONTENT_KEY", raise_if_missing_key: true
+    )
   end
 
   teardown do
@@ -47,4 +48,12 @@ class EncryptedFileTest < ActiveSupport::TestCase
 
     assert_equal "#{@content} and went by the lake", @encrypted_file.read
   end
+
+  test "raise MissingKeyError when key is missing" do
+    assert_raise(ActiveSupport::EncryptedFile::MissingKeyError) do
+      ActiveSupport::EncryptedFile.new(
+        content_path: @content_path, key_path: "", env_key: "", raise_if_missing_key: true
+      ).read
+    end
+  end
 end
diff --git a/activesupport/test/test_case_test.rb b/activesupport/test/test_case_test.rb
index 84e4953fe2..79b75a001a 100644
--- a/activesupport/test/test_case_test.rb
+++ b/activesupport/test/test_case_test.rb
@@ -156,6 +156,16 @@ class AssertDifferenceTest < ActiveSupport::TestCase
     end
   end
 
+  def test_assert_changes_with_to_option_but_no_change_has_special_message
+    error = assert_raises Minitest::Assertion do
+      assert_changes "@object.num", to: 0 do
+        # no changes
+      end
+    end
+
+    assert_equal "\"@object.num\" didn't change. It was already 0", error.message
+  end
+
   def test_assert_changes_with_wrong_to_option
     assert_raises Minitest::Assertion do
       assert_changes "@object.num", to: 2 do
@@ -218,6 +228,7 @@ class AssertDifferenceTest < ActiveSupport::TestCase
   def test_assert_changes_with_message
     error = assert_raises Minitest::Assertion do
       assert_changes "@object.num", "@object.num should 1", to: 1 do
+        @object.decrement
       end
     end