Override $HOME to avoid touching the actual $HOME.

Author: postmodern

.gitignore

@@ -1 +1,2 @@
 /test/src/
+/test/home/

test/helper.sh

@@ -1,11 +1,14 @@
 [[ -z "$SHUNIT2"     ]] && SHUNIT2=/usr/share/shunit2/shunit2
 [[ -n "$ZSH_VERSION" ]] && setopt shwordsplit
 
+export HOME="$PWD/test/home"
+export PATH="$PWD/bin:$PATH"
+
+mkdir -p "$HOME"
+
 . ./share/ruby-install/ruby-install.sh
 . ./share/ruby-install/functions.sh
 
-export PATH="$PWD/bin:$PATH"
-
 function setUp() { return; }
 function tearDown() { return; }
 function oneTimeTearDown() { return; }