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-rw-r--r--railties/test/console_helpers.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/railties/test/console_helpers.rb b/railties/test/console_helpers.rb
index 4b11afa511..8350fce5ee 100644
--- a/railties/test/console_helpers.rb
+++ b/railties/test/console_helpers.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
begin
require "pty"
rescue LoadError
@@ -7,7 +9,7 @@ module ConsoleHelpers
def assert_output(expected, io, timeout = 10)
timeout = Time.now + timeout
- output = ""
+ output = "".dup
until output.include?(expected) || Time.now > timeout
if IO.select([io], [], [], 0.1)
output << io.read(1)