diff --git a/tests/bashunit.bash b/tests/bashunit.bash
new file mode 100644
index 0000000..59dc5b5
--- /dev/null
+++ b/tests/bashunit.bash
@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+
+########################################################################
+# GLOBALS
+########################################################################
+
+verbose=2
+
+bashunit_passed=0
+bashunit_failed=0
+bashunit_skipped=0
+
+########################################################################
+# ASSERT FUNCTIONS
+########################################################################
+
+# Assert that a given expression evaluates to true.
+#
+# $1: Expression
+assert() {
+    if test $* ; then _passed ; else _failed "$*" true ; fi
+}
+
+# Assert that a given output string is equal to an expected string.
+#
+# $1: Output
+# $2: Expected
+assertEqual() {
+    echo $1 | grep -E "^$2$" > /dev/null
+    if [ $? -eq 0 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that a given output string is not equal to an expected string.
+#
+# $1: Output
+# $2: Expected
+assertNotEqual() {
+    echo $1 | grep -E "^$2$" > /dev/null
+    if [ $? -ne 0 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that a given output string starts with an expected string.
+#
+# $1: Output
+# $2: Expected
+assertStartsWith() {
+    echo $1 | grep -E "^$2" > /dev/null
+    if [ $? -eq 0 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that the last command's return code is equal to an expected integer.
+#
+# $1: Output
+# $2: Expected
+# $?: Provided
+assertReturn() {
+    local code=$?
+    if [ $code -eq $2 ] ; then _passed ; else _failed "$code" "$2" ; fi
+}
+
+# Assert that the last command's return code is not equal to an expected integer.
+#
+# $1: Output
+# $2: Expected
+# $?: Provided
+assertNotReturn() {
+    local code=$?
+    if [ $code -ne $2 ] ; then _passed ; else _failed "$code" "$2" ; fi
+}
+
+# Assert that a given integer is greater than an expected integer.
+#
+# $1: Output
+# $2: Expected
+assertGreaterThan() {
+    if [ $1 -gt $2 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that a given integer is greater than or equal to an expected integer.
+#
+# $1: Output
+# $2: Expected
+assertAtLeast() {
+    if [ $1 -ge $2 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that a given integer is less than an expected integer.
+#
+# $1: Output
+# $2: Expected
+assertLessThan() {
+    if [ $1 -lt $2 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Assert that a given integer is less than or equal to an expected integer.
+#
+# $1: Output
+# $2: Expected
+assertAtMost() {
+    if [ $1 -le $2 ] ; then _passed ; else _failed "$1" "$2" ; fi
+}
+
+# Skip the current test case.
+#
+skip() {
+    _skipped
+}
+
+_failed() {
+    bashunit_failed=$((bashunit_failed+1))
+
+    local tc=${FUNCNAME[2]}
+    local line=${BASH_LINENO[1]}
+    if [ $verbose -ge 2 ] ; then
+        echo -e "\033[37;1m$tc\033[0m:$line:\033[31mFailed\033[0m"
+    fi
+    if [ $verbose -eq 3 ] ; then
+        echo -e "\033[31mExpected\033[0m: $2"
+        echo -e "\033[31mProvided\033[0m: $1"
+    fi
+}
+
+_passed() {
+    bashunit_passed=$((bashunit_passed+1))
+
+    local tc=${FUNCNAME[2]}
+    local line=${BASH_LINENO[1]}
+    if [ $verbose -ge 2 ] ; then
+        echo -e "\033[37;1m$tc\033[0m:$line:\033[32mPassed\033[0m"
+    fi
+}
+
+_skipped() {
+    bashunit_skipped=$((bashunit_skipped+1))
+
+    local tc=${FUNCNAME[2]}
+    local line=${BASH_LINENO[1]}
+    if [ $verbose -ge 2 ] ; then
+        echo -e "\033[37;1m$tc\033[0m:$line:\033[33mSkipped\033[0m"
+    fi
+}
+
+########################################################################
+# RUN
+########################################################################
+
+usage() {
+    echo "Usage: <testscript> [options...]"
+    echo
+    echo "Options:"
+    echo "  -v, --verbose  Print exptected and provided values"
+    echo "  -s, --summary  Only print summary omitting individual test results"
+    echo "  -q, --quiet    Do not print anything to standard output"
+    echo "  -h, --help     Show usage screen"
+}
+
+runTests() {
+    local test_pattern="test[a-zA-Z0-9_]\+"
+    local testcases=$(grep "^ *\(function \)*$test_pattern *\\(\\)" $0 | \
+        grep -o $test_pattern)
+
+    if [ ! "${testcases[*]}" ] ; then
+        usage
+        exit 0
+    fi
+
+    for tc in $testcases ; do $tc ; done
+
+    if [ $verbose -ge 1 ] ; then
+        echo "Done. $bashunit_passed passed." \
+             "$bashunit_failed failed." \
+             "$bashunit_skipped skipped."
+    fi
+    exit $bashunit_failed
+}
+
+# Arguments
+while [ $# -gt 0 ]; do
+    arg=$1; shift
+    case $arg in
+        "-v"|"--verbose") verbose=3;;
+        "-s"|"--summary") verbose=1;;
+        "-q"|"--quiet")   verbose=0;;
+        "-h"|"--help")    usage; exit 0;;
+        *) shift;;
+    esac
+done
+
+runTests