diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..b887685f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "shunit2"]
+	path = shunit2
+	url = git@github.com:kward/shunit2.git
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..818940cc
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,9 @@
+language: php
+sudo: false
+
+php:
+    - '7.0'
+
+script:
+    - test/powerlevel9k.spec
+
diff --git a/shunit2 b/shunit2
new file mode 160000
index 00000000..60dd60bc
--- /dev/null
+++ b/shunit2
@@ -0,0 +1 @@
+Subproject commit 60dd60bcd1573befe38465010263ab242e55811d
diff --git a/test/powerlevel9k.spec b/test/powerlevel9k.spec
new file mode 100755
index 00000000..3ed33d64
--- /dev/null
+++ b/test/powerlevel9k.spec
@@ -0,0 +1,48 @@
+#!/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=$0
+
+function oneTimeSetUp() {
+  # Load Powerlevel9k
+  source powerlevel9k.zsh-theme
+  source functions/*
+}
+
+function testJoinedSegments() {
+  POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir dir_joined)
+
+  assertEquals "%K{blue} %F{black}%~ %K{blue}%F{black}%F{black}%~ %k%F{blue}%f " "$(build_left_prompt)"
+
+  unset POWERLEVEL9K_LEFT_PROMPT_ELEMENTS
+}
+
+function testTransitiveJoinedSegments() {
+  POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir root_indicator_joined dir_joined)
+
+  assertEquals "%K{blue} %F{black}%~ %K{blue}%F{black}%F{black}%~ %k%F{blue}%f " "$(build_left_prompt)"
+
+  unset POWERLEVEL9K_LEFT_PROMPT_ELEMENTS
+}
+
+function testJoiningWithConditionalSegment() {
+  POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir background_jobs dir_joined)
+
+  assertEquals "%K{blue} %F{black}%~ %K{blue}%F{black} %F{black}%~ %k%F{blue}%f " "$(build_left_prompt)"
+
+  unset POWERLEVEL9K_LEFT_PROMPT_ELEMENTS
+}
+
+function testDynamicColoringOfSegmentsWork() {
+  POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir)
+  POWERLEVEL9K_DIR_HOME_SUBFOLDER_BACKGROUND='red'
+
+  assertEquals "%K{red} %F{black}%~ %k%F{red}%f " "$(build_left_prompt)"
+
+  unset POWERLEVEL9K_LEFT_PROMPT_ELEMENTS
+  unset POWERLEVEL9K_DIR_HOME_SUBFOLDER_BACKGROUND
+}
+
+source shunit2/source/2.1/src/shunit2