Add tests for swift segment

test/segments/swift_version.spec

@@ -0,0 +1,52 @@
+#!/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=$0
+
+function setUp() {
+  export TERM="xterm-256color"
+  # Load Powerlevel9k
+  source powerlevel9k.zsh-theme
+
+  P9K_HOME=$(pwd)
+  ### Test specific
+  # Create default folder and git init it.
+  FOLDER=/tmp/powerlevel9k-test
+  mkdir -p "${FOLDER}"
+  cd $FOLDER
+}
+
+function tearDown() {
+  # Go back to powerlevel9k folder
+  cd "${P9K_HOME}"
+  # Remove eventually created test-specific folder
+  rm -fr "${FOLDER}"
+  # At least remove test folder completely
+  rm -fr /tmp/powerlevel9k-test
+}
+
+function testSwiftSegmentPrintsNothingIfSwiftIsNotAvailable() {
+    local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(swift_version custom_world)
+    local POWERLEVEL9K_CUSTOM_WORLD='echo world'
+    alias swift="noswift"
+
+
+    assertEquals "%K{white} %F{black}world %k%F{white}%f " "$(build_left_prompt)"
+
+    unalias swift
+}
+
+function testSwiftSegmentWorks() {
+    local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(swift_version)
+    function swift() {
+        echo "Apple Swift version 3.0.1 (swiftlang-800.0.58.6 clang-800.0.42.1)\nTarget: x86_64-apple-macosx10.9"
+    }
+
+    assertEquals "%K{magenta} %F{white%}Swift %f%F{white}3.0.1 %k%F{magenta}%f " "$(build_left_prompt)"
+
+    unfunction swift
+}
+
+source shunit2/source/2.1/src/shunit2