diff --git a/test/test-helper.sh b/test/test-helper.sh
index f435b12..912fa58 100644
--- a/test/test-helper.sh
+++ b/test/test-helper.sh
@@ -1,12 +1,39 @@
+[ -n "$TEST_DEBUG" ] && set -x
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
+abs_dirname() {
+  local cwd="$(pwd)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  pwd
+  cd "$cwd"
+}
+
 # Set testroot variable.
-testroot="$(dirname "$BASH_SOURCE")"
+testroot="$(abs_dirname "$BASH_SOURCE")"
+
+# Set root variable.
+root="$(abs_dirname "$testroot/../..")"
+
+# Setup PATH environment variable.
+PATH="$root/bin:$root/libexec:$PATH"
 
 # Include assert.sh testing library.
-source "$testroot/assert.sh"
-source "$testroot/stub.sh"
+source "${testroot}/assert.sh"
+source "${testroot}/stub.sh"
+
 
 #
-# Additional test helpers.
+# Test Helpers
 #
 
 # Silent shortcut to "cd -".