1 files changed, 59 insertions, 0 deletions
diff --git a/activesupport/test/encrypted_file_test.rb b/activesupport/test/encrypted_file_test.rb
new file mode 100644
index 0000000000..ba3bbef903
--- /dev/null
+++ b/activesupport/test/encrypted_file_test.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+require "active_support/encrypted_file"
+
+class EncryptedFileTest < ActiveSupport::TestCase
+  setup do
+    @content = "One little fox jumped over the hedge"
+
+    @content_path = File.join(Dir.tmpdir, "content.txt.enc")
+
+    @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", raise_if_missing_key: true
+    )
+  end
+
+  teardown do
+    FileUtils.rm_rf @content_path
+    FileUtils.rm_rf @key_path
+  end
+
+  test "reading content by env key" do
+    FileUtils.rm_rf @key_path
+
+    begin
+      ENV["CONTENT_KEY"] = ActiveSupport::EncryptedFile.generate_key
+      @encrypted_file.write @content
+
+      assert_equal @content, @encrypted_file.read
+    ensure
+      ENV["CONTENT_KEY"] = nil
+    end
+  end
+
+  test "reading content by key file" do
+    @encrypted_file.write(@content)
+    assert_equal @content, @encrypted_file.read
+  end
+
+  test "change content by key file" do
+    @encrypted_file.write(@content)
+    @encrypted_file.change do |file|
+      file.write(file.read + " and went by the lake")
+    end
+
+    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