Ensuring that there's a stable and unstable version "available" for this test.

test/fast/Listing versions/Running "nvm ls stable" and "nvm ls unstable" should return the appropriate implicit alias

@@ -4,6 +4,9 @@
 
 die () { echo $@ ; exit 1; }
 
+mkdir ../../../v0.2.3
+mkdir ../../../v0.3.3
+
 EXPECTED_STABLE="$(nvm_print_implicit_alias local stable)"
 STABLE_VERSION="$(nvm_version "$EXPECTED_STABLE")"
 
@@ -19,7 +22,8 @@ nvm ls unstable | \grep "$UNSTABLE_VERSION" >/dev/null \
 mkdir ../../../v0.1.2
 nvm alias stable 0.1
 
+nvm ls stable | \grep -v "$STABLE_VERSION" >/dev/null \
+  || die "'nvm ls stable' contained $STABLE_VERSION instead of v0.1.2"
 nvm ls stable | \grep v0.1.2 >/dev/null \
-  && nvm ls stable | \grep -v "$STABLE_VERSION" >/dev/null \
-  || die "'nvm ls stable' did not contain an explicit 'stable' alias"
+  || die "'nvm ls stable' did not contain v0.1.2"