test that go_segment prints nothing if GOPATH is set but is not a subset of PWD

test/segments/go_version.spec

@@ -35,6 +35,17 @@ function testGo() {
   unalias go
 }
 
+function testGoSegmentPrintsNothingIfNotInGopath() {
+  alias go=mockGo
+  POWERLEVEL9K_CUSTOM_WORLD='echo world'
+  POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(custom_world go_version)
+
+  assertEquals "%K{white} %F{black}world %k%F{white}%f " "$(build_left_prompt)"
+
+  unset POWERLEVEL9K_LEFT_PROMPT_ELEMENTS
+  unset POWERLEVEL9K_CUSTOM_WORLD
+}
+
 function testGoSegmentPrintsNothingIfGoIsNotAvailable() {
   alias go=noGo
   POWERLEVEL9K_CUSTOM_WORLD='echo world'