Add tests for swap segment

test/segments/swap.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/swap-test
+  mkdir -p "${FOLDER}"
+  cd $FOLDER
+}
+
+function tearDown() {
+  # Go back to powerlevel9k folder
+  cd "${P9K_HOME}"
+  # Remove eventually created test-specific folder
+  rm -fr "${FOLDER}"
+  # At least remove test folder completely
+  rm -fr /tmp/powerlevel9k-test
+}
+
+function testSwapSegmentWorksOnOsx() {
+    local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(swap)
+    local OS="OSX" # Fake OSX
+    sysctl() {
+        echo "vm.swapusage: total = 3072,00M  used = 1620,50M  free = 1451,50M  (encrypted)"
+    }
+
+    assertEquals "%K{yellow} %F{black%}SWP %f%F{black}1.58G " "$(prompt_swap left 1 false ${FOLDER})"
+
+    unfunction sysctl
+}
+
+function testSwapSegmentWorksOnLinux() {
+    local POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(swap)
+    local OS="Linux" # Fake Linux
+    mkdir proc
+    echo "SwapTotal: 1000000" > proc/meminfo
+    echo "SwapFree: 1000" >> proc/meminfo
+
+    assertEquals "%K{yellow} %F{black%}SWP %f%F{black}0.95G " "$(prompt_swap left 1 false ${FOLDER})"
+}
+
+source shunit2/source/2.1/src/shunit2