Add tests for php_version segment

test/segments/php_version.spec

@@ -0,0 +1,36 @@
+#!/usr/bin/env zsh
+#vim:ft=zsh ts=2 sw=2 sts=2 et fenc=utf-8
+
+# Required for shunit2 to run correctly
+setopt shwordsplit
+SHUNIT_PARENT=$0
+
+function setUp() {
+  export TERM="xterm-256color"
+  # Load Powerlevel9k
+  source powerlevel9k.zsh-theme
+}
+
+function testPhpVersionSegmentPrintsNothingIfPhpIsNotAvailable() {
+  local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(php_version custom_world)
+  local POWERLEVEL9K_CUSTOM_WORLD='echo world'
+  alias php="nophp"
+
+  assertEquals "%K{white} %F{black}world %k%F{white}%f " "$(build_left_prompt)"
+
+  unalias php
+}
+
+function testPhpVersionSegmentWorks() {
+  local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(php_version)
+  alias php="echo 'PHP 5.6.27 (cli) (built: Oct 23 2016 11:47:58)
+Copyright (c) 1997-2016 The PHP Group
+Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
+'"
+
+  assertEquals "%K{013} %F{255}PHP 5.6.27 %k%F{fuchsia}%f " "$(build_left_prompt)"
+
+  unalias php
+}
+
+source shunit2/source/2.1/src/shunit2