Correct Env name in the UI to be tested

Author: ono-max

test/support/assertions.rb

@@ -3,7 +3,7 @@
 module DEBUGGER__
   module AssertionHelpers
     def assert_line_num(expected)
-      case ENV['RUBY_DEBUG_TEST_UI']
+      case get_target_ui
       when 'terminal'
         @scenario.push(Proc.new { |test_info|
           msg = "Expected line number to be #{expected.inspect}, but was #{test_info.internal_info['line']}\n"

test/support/protocol_test_case.rb

@@ -280,7 +280,7 @@ def assert_watch_result expected,  expression, frame_idx: 0
     # Not API
 
     def execute_dap_scenario scenario
-      ENV['RUBY_DEBUG_TESTED_UI'] = 'vscode'
+      ENV['RUBY_DEBUG_TEST_UI'] = 'vscode'
 
       @remote_info = setup_unix_domain_socket_remote_debuggee
       Timeout.timeout(TIMEOUT_SEC) do
@@ -305,7 +305,7 @@ def execute_dap_scenario scenario
     end
 
     def execute_cdp_scenario scenario
-      ENV['RUBY_DEBUG_TESTED_UI'] = 'chrome'
+      ENV['RUBY_DEBUG_TEST_UI'] = 'chrome'
 
       @remote_info = setup_tcpip_remote_debuggee
       Timeout.timeout(TIMEOUT_SEC) do
@@ -589,10 +589,6 @@ def find_response key, target, direction
       flunk create_protocol_message "TIMEOUT ERROR (#{TIMEOUT_SEC} sec) while waiting: #{key} #{target}"
     end
 
-    def get_target_ui
-      ENV['RUBY_DEBUG_TESTED_UI']
-    end
-
     # FIXME: Commonalize this method.
     def recv_response
       case  header = @sock.gets

test/support/test_case.rb

@@ -98,6 +98,10 @@ def debug_print msg
 
     TIMEOUT_SEC = (ENV['RUBY_DEBUG_TIMEOUT_SEC'] || 10).to_i
 
+    def get_target_ui
+      ENV['RUBY_DEBUG_TEST_UI']
+    end
+
     private
 
     def wait_pid pid, sec