Add tests for "`nvm use default` on source" behavior.

test/installation/sourcing/Sourcing nvm.sh should use the default if available

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+die () { echo $@ ; exit 1; }
+
+echo '0.10.1' > ../../../alias/default || die 'creation of default alias failed'
+
+. ../../../nvm.sh || die 'sourcing returned nonzero exit code'
+
+NVM_LS_CURRENT="$(nvm ls current | \grep -o v0.10.1)"
+[ "_$NVM_LS_CURRENT" = '_v0.10.1' ] || die "'nvm ls current' did not return '-> v0.10.1', got '$NVM_LS_CURRENT'"
+
+# NVM_LS_CURRENT_COLORED="$(nvm ls current | sed -n l)"
+
+NVM_ALIAS_DEFAULT="$(nvm alias default)"
+[ "_$NVM_ALIAS_DEFAULT" = "_default -> 0.10.1 (-> v0.10.1)" ] \
+  || die "'nvm alias default did not return 'default -> 0.10.1 (-> v0.10.1)', got '$NVM_ALIAS_DEFAULT'"
+

test/installation/sourcing/setup_dir

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+mkdir -p ../../../alias
+
+. ../../../nvm.sh
+nvm install 0.10.1
+nvm unload || echo >&2 'nvm unload failed'
+

test/installation/sourcing/teardown_dir

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+rm -rf ../../../alias
+rm -rf ../../../v0.10.1
+