Ignore user's rdbgrc script in tests

Author: st0012

test/debug/rdbg_option_test.rb

@@ -57,6 +57,11 @@ def test_debugger_stops_immediately
   end
 
   class RCFileTest < TestCase
+    def rc_filename
+      # in test cases, Dir.home points to an updated ENV["HOME"] value, which is a tmpdir
+      File.join(Dir.home, ".rdbgrc")
+    end
+
     def rc_script
       "config set skip_path /foo/bar/"
     end
@@ -68,14 +73,11 @@ def program
     end
 
     def with_rc_script
-      rc_filename = "~/.rdbgrc"
-      renamed_rc_filename = "~/.rdbgrc.original"
-      File.rename(rc_filename, renamed_rc_filename) if File.exist?(rc_filename)
-      File.open(File.join(Dir.home, ".rdbgrc"), "w") { |f| f.write(rc_script) }
+      File.open(rc_filename, "w") { |f| f.write(rc_script) }
 
       yield
     ensure
-      File.rename(renamed_rc_filename, rc_filename) if File.exist?(renamed_rc_filename)
+      File.delete(rc_filename)
     end
 
     def test_debugger_loads_the_rc_file_by_default

test/support/test_case.rb

@@ -20,10 +20,15 @@ class TestCase < Test::Unit::TestCase
 
     def setup
       @temp_file = nil
+      @original_root = Dir.home("root")
+      # this is to prevent some test cases from updating the user's actual home dir
+      dir = Dir.mktmpdir
+      ENV["HOME"] = dir
     end
 
     def teardown
       remove_temp_file
+      ENV["HOME"] = @original_root
     end
 
     def temp_file_path
@@ -361,7 +366,7 @@ def cleanup
       method: "Debugger.setBlackboxPatterns",
       params: {
         patterns: [
-    
+
         ]
       }
     },
@@ -378,15 +383,15 @@ def initialize
       @result = []
       @keys = []
     end
-  
+
     def parse objs
       objs.each{|k, v|
         parse_ k, v
         @keys.pop
       }
       @result
     end
-  
+
     def parse_ k, v
       @keys << k
       case v