diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 203534cb..9182ee3a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -71,6 +71,15 @@ jobs:
           name: docker-gen.tar
           path: docker-gen.tar
 
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v2
+        - name: Install Required Dependencies
+          run: make install-unit-test-deps
+        - name: Run Unit Tests
+          run: make unit-test
+
   docker-specs-tests:
     needs: companion-build
     runs-on: ubuntu-latest
diff --git a/.gitignore b/.gitignore
index 08ef5882..d0e86463 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,6 @@ vhost.d/
 go/
 nginx.tmpl
 test/local_test_env.sh
-test/tests/docker_api/expected-std-out.txt
-test/tests/container_restart/docker_event_out.txt
-test/tests/certs_standalone/letsencrypt_user_data
+test/integration/docker_api/expected-std-out.txt
+test/integration/container_restart/docker_event_out.txt
+test/integration/certs_standalone/letsencrypt_user_data
diff --git a/Makefile b/Makefile
new file mode 100644
index 00000000..80bb0a83
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,21 @@
+.DEFAULT_GOAL := help
+
+.PHONY: help
+help: ## Show help
+#	Source: https://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+.PHONY: install
+install: install-unit-test-deps ## Install all dev dependencies
+
+.PHONY: install-unit-test-deps
+install-unit-test-deps:
+	./hack/make-rules/install-unit-test-deps.sh
+
+.PHONY: unit-test
+unit-test: ## Run all tests
+	./hack/make-rules/unit-test.sh
+
+.PHONY: verify
+verify: ## Verify that dev dependencies are installed and correctly configured
+	./hack/make-rules/verify.sh
\ No newline at end of file
diff --git a/hack/init.sh b/hack/init.sh
new file mode 100644
index 00000000..1659339d
--- /dev/null
+++ b/hack/init.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2034 # Variables sourced in other scripts.
+
+PROJECT_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+
+THIRD_PARTY=$PROJECT_ROOT/third_party
diff --git a/hack/make-rules/install-unit-test-deps.sh b/hack/make-rules/install-unit-test-deps.sh
new file mode 100755
index 00000000..137e619c
--- /dev/null
+++ b/hack/make-rules/install-unit-test-deps.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+PROJECT_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
+
+# shellcheck disable=SC1090 # Sourced files
+source "$PROJECT_ROOT/hack/shunit2.sh"
+
+shunit2::install
diff --git a/hack/make-rules/unit-test.sh b/hack/make-rules/unit-test.sh
new file mode 100755
index 00000000..83c6fdf4
--- /dev/null
+++ b/hack/make-rules/unit-test.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2034 # Variables sourced in other scripts.
+
+set -e
+shopt -s globstar
+
+PROJECT_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
+
+UNIT_TEST_DIR=$PROJECT_ROOT/test/unit
+
+source_all_files_recursively_from() {
+    local directory=$1
+    for file in "$directory"/**/*.sh; do
+        # shellcheck disable=SC1090 # Sourced files
+        source "$file"
+    done
+}
+
+# shellcheck disable=SC1090 # Sourced files
+source "$PROJECT_ROOT/hack/shunit2.sh"
+
+suite() {
+    source_all_files_recursively_from "$UNIT_TEST_DIR"
+}
+
+# shellcheck disable=SC1090 # Sourced files
+. "$SHUNIT2_BIN"
diff --git a/hack/make-rules/verify.sh b/hack/make-rules/verify.sh
new file mode 100644
index 00000000..df7fc75c
--- /dev/null
+++ b/hack/make-rules/verify.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+PROJECT_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
+
+# shellcheck disable=SC1090 # Sourced files
+source "$PROJECT_ROOT/hack/shunit2.sh"
+
+shunit2::validate
diff --git a/hack/shunit2.sh b/hack/shunit2.sh
new file mode 100644
index 00000000..64cbf71d
--- /dev/null
+++ b/hack/shunit2.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2034 # Variables sourced in other scripts.
+
+PROJECT_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+
+# shellcheck disable=SC1090 # Sourced files
+source "$PROJECT_ROOT/hack/init.sh"
+
+SHUNIT2_VERSION=v2.1.8
+SHUNIT2_REPO_URL=https://github.com/kward/shunit2
+SHUNIT2_DIR=$THIRD_PARTY/shunit2
+SHUNIT2_BIN=$SHUNIT2_DIR/shunit2
+
+shunit2::validate() {
+    # Validate shUnit2 is installed
+    if [[ ! -d $SHUNIT2_DIR ]]; then
+        echo "shUnit2 is not installed."
+        return 1
+    fi
+
+    # Validate installed version
+    local expected_release=$SHUNIT2_VERSION
+    local current_release
+
+    current_release=$(cd "$SHUNIT2_DIR" && git describe --tags)
+    if [[ "$current_release" != "$expected_release" ]]; then
+        echo "shUnit2 version $expected_release required, the current version" \
+            "installed is $current_release."
+        return 1
+    fi
+}
+
+shunit2::install() {
+    if shunit2::validate; then
+        echo "shUnit2 ${SHUNIT2_VERSION} already installed."
+        return 1
+    else
+        shunit2::cleanup
+
+        git clone --branch "$SHUNIT2_VERSION" "$SHUNIT2_REPO_URL" "$SHUNIT2_DIR"
+        chmod +x "$SHUNIT2_BIN"
+    fi
+}
+
+shunit2::cleanup() {
+    if [[ -d "$SHUNIT2_DIR" ]]; then
+        rm -rf "$SHUNIT2_DIR"
+    fi
+}
diff --git a/test/tests/acme_accounts/expected-std-out.txt b/test/integration/acme_accounts/expected-std-out.txt
similarity index 100%
rename from test/tests/acme_accounts/expected-std-out.txt
rename to test/integration/acme_accounts/expected-std-out.txt
diff --git a/test/tests/acme_accounts/run.sh b/test/integration/acme_accounts/run.sh
similarity index 100%
rename from test/tests/acme_accounts/run.sh
rename to test/integration/acme_accounts/run.sh
diff --git a/test/tests/certs_san/expected-std-out.txt b/test/integration/certs_san/expected-std-out.txt
similarity index 100%
rename from test/tests/certs_san/expected-std-out.txt
rename to test/integration/certs_san/expected-std-out.txt
diff --git a/test/tests/certs_san/run.sh b/test/integration/certs_san/run.sh
similarity index 100%
rename from test/tests/certs_san/run.sh
rename to test/integration/certs_san/run.sh
diff --git a/test/tests/certs_single/expected-std-out.txt b/test/integration/certs_single/expected-std-out.txt
similarity index 100%
rename from test/tests/certs_single/expected-std-out.txt
rename to test/integration/certs_single/expected-std-out.txt
diff --git a/test/tests/certs_single/run.sh b/test/integration/certs_single/run.sh
similarity index 100%
rename from test/tests/certs_single/run.sh
rename to test/integration/certs_single/run.sh
diff --git a/test/tests/certs_single_domain/expected-std-out.txt b/test/integration/certs_single_domain/expected-std-out.txt
similarity index 100%
rename from test/tests/certs_single_domain/expected-std-out.txt
rename to test/integration/certs_single_domain/expected-std-out.txt
diff --git a/test/tests/certs_single_domain/run.sh b/test/integration/certs_single_domain/run.sh
similarity index 100%
rename from test/tests/certs_single_domain/run.sh
rename to test/integration/certs_single_domain/run.sh
diff --git a/test/tests/certs_standalone/expected-std-out.txt b/test/integration/certs_standalone/expected-std-out.txt
similarity index 100%
rename from test/tests/certs_standalone/expected-std-out.txt
rename to test/integration/certs_standalone/expected-std-out.txt
diff --git a/test/tests/certs_standalone/run.sh b/test/integration/certs_standalone/run.sh
similarity index 92%
rename from test/tests/certs_standalone/run.sh
rename to test/integration/certs_standalone/run.sh
index 20e5855b..345621b5 100755
--- a/test/tests/certs_standalone/run.sh
+++ b/test/integration/certs_standalone/run.sh
@@ -36,7 +36,7 @@ function cleanup {
 trap cleanup EXIT
 
 # Create letsencrypt_user_data with a single domain cert
-cat > "${GITHUB_WORKSPACE}/test/tests/certs_standalone/letsencrypt_user_data" <<EOF
+cat > "${GITHUB_WORKSPACE}/test/integration/certs_standalone/letsencrypt_user_data" <<EOF
 LETSENCRYPT_STANDALONE_CERTS=('single')
 LETSENCRYPT_single_HOST=('${domains[0]}')
 EOF
@@ -55,7 +55,7 @@ elif [[ "${DRY_RUN:-}" == 1 ]]; then
 fi
 
 run_le_container "${1:?}" "$le_container_name" \
-  "--volume ${GITHUB_WORKSPACE}/test/tests/certs_standalone/letsencrypt_user_data:/app/letsencrypt_user_data"
+  "--volume ${GITHUB_WORKSPACE}/test/integration/certs_standalone/letsencrypt_user_data:/app/letsencrypt_user_data"
 
 # Wait for a file at /etc/nginx/conf.d/standalone-cert-${domains[0]}.conf
 wait_for_standalone_conf "${domains[0]}" "$le_container_name"
@@ -78,7 +78,7 @@ docker exec "$le_container_name" bash -c "[[ -f /etc/nginx/conf.d/standalone-cer
   && echo "Standalone configuration for ${domains[0]} wasn't correctly removed."
 
 # Add another (SAN) certificate to letsencrypt_user_data
-cat > "${GITHUB_WORKSPACE}/test/tests/certs_standalone/letsencrypt_user_data" <<EOF
+cat > "${GITHUB_WORKSPACE}/test/integration/certs_standalone/letsencrypt_user_data" <<EOF
 LETSENCRYPT_STANDALONE_CERTS=('single' 'san')
 LETSENCRYPT_single_HOST=('${domains[0]}')
 LETSENCRYPT_san_HOST=('${domains[1]}' '${domains[2]}')
diff --git a/test/tests/container_restart/expected-std-out.txt b/test/integration/container_restart/expected-std-out.txt
similarity index 100%
rename from test/tests/container_restart/expected-std-out.txt
rename to test/integration/container_restart/expected-std-out.txt
diff --git a/test/tests/container_restart/run.sh b/test/integration/container_restart/run.sh
similarity index 85%
rename from test/tests/container_restart/run.sh
rename to test/integration/container_restart/run.sh
index 1bc05632..418ab7b0 100755
--- a/test/tests/container_restart/run.sh
+++ b/test/integration/container_restart/run.sh
@@ -15,7 +15,7 @@ IFS=',' read -r -a domains <<< "$TEST_DOMAINS"
 # Listen for Docker restart events
 docker events \
   --filter event=restart \
-  --format 'Container {{.Actor.Attributes.name}} restarted' > "${GITHUB_WORKSPACE}/test/tests/container_restart/docker_event_out.txt" &
+  --format 'Container {{.Actor.Attributes.name}} restarted' > "${GITHUB_WORKSPACE}/test/integration/container_restart/docker_event_out.txt" &
 docker_events_pid=$!
 
 # Cleanup function with EXIT trap
@@ -23,7 +23,7 @@ function cleanup {
   # Kill the Docker events listener
   kill $docker_events_pid && wait $docker_events_pid 2>/dev/null
   # Remove temporary files
-  rm -f "${GITHUB_WORKSPACE}/test/tests/container_restart/docker_event_out.txt"
+  rm -f "${GITHUB_WORKSPACE}/test/integration/container_restart/docker_event_out.txt"
   # Remove any remaining Nginx container(s) silently.
   for domain in "${domains[@]}"; do
     docker rm --force "$domain" &> /dev/null
@@ -42,7 +42,7 @@ for domain in "${domains[@]}"; do
   # Check if container restarted
   timeout="$(date +%s)"
   timeout="$((timeout + 60))"
-  until grep "$domain" "${GITHUB_WORKSPACE}"/test/tests/container_restart/docker_event_out.txt; do
+  until grep "$domain" "${GITHUB_WORKSPACE}"/test/integration/container_restart/docker_event_out.txt; do
     if [[ "$(date +%s)" -gt "$timeout" ]]; then
       echo "Container $domain didn't restart in under one minute."
       break
diff --git a/test/tests/default_cert/expected-std-out.txt b/test/integration/default_cert/expected-std-out.txt
similarity index 100%
rename from test/tests/default_cert/expected-std-out.txt
rename to test/integration/default_cert/expected-std-out.txt
diff --git a/test/tests/default_cert/run.sh b/test/integration/default_cert/run.sh
similarity index 100%
rename from test/tests/default_cert/run.sh
rename to test/integration/default_cert/run.sh
diff --git a/test/tests/docker_api/run.sh b/test/integration/docker_api/run.sh
similarity index 98%
rename from test/tests/docker_api/run.sh
rename to test/integration/docker_api/run.sh
index 84acf098..209e767d 100755
--- a/test/tests/docker_api/run.sh
+++ b/test/integration/docker_api/run.sh
@@ -78,7 +78,7 @@ case $SETUP in
     "$1" \
     bash -c "$commands" 2>&1
 
-  cat > "${GITHUB_WORKSPACE}/test/tests/docker_api/expected-std-out.txt" <<EOF
+  cat > "${GITHUB_WORKSPACE}/test/integration/docker_api/expected-std-out.txt" <<EOF
 Container $nginx_vol received exec_start: sh -c /app/docker-entrypoint.sh /usr/local/bin/docker-gen /app/nginx.tmpl /etc/nginx/conf.d/default.conf; /usr/sbin/nginx -s reload
 $nginx_vol
 Container $nginx_env received exec_start: sh -c /app/docker-entrypoint.sh /usr/local/bin/docker-gen /app/nginx.tmpl /etc/nginx/conf.d/default.conf; /usr/sbin/nginx -s reload
@@ -220,7 +220,7 @@ EOF
     "$1" \
     bash -c "$commands" 2>&1
 
-    cat > "${GITHUB_WORKSPACE}/test/tests/docker_api/expected-std-out.txt" <<EOF
+    cat > "${GITHUB_WORKSPACE}/test/integration/docker_api/expected-std-out.txt" <<EOF
 Container $docker_gen received signal 1
 Container $nginx_vol received signal 1
 $docker_gen
diff --git a/test/tests/force_renew/expected-std-out.txt b/test/integration/force_renew/expected-std-out.txt
similarity index 100%
rename from test/tests/force_renew/expected-std-out.txt
rename to test/integration/force_renew/expected-std-out.txt
diff --git a/test/tests/force_renew/run.sh b/test/integration/force_renew/run.sh
similarity index 100%
rename from test/tests/force_renew/run.sh
rename to test/integration/force_renew/run.sh
diff --git a/test/tests/location_config/expected-std-out.txt b/test/integration/location_config/expected-std-out.txt
similarity index 100%
rename from test/tests/location_config/expected-std-out.txt
rename to test/integration/location_config/expected-std-out.txt
diff --git a/test/tests/location_config/run.sh b/test/integration/location_config/run.sh
similarity index 99%
rename from test/tests/location_config/run.sh
rename to test/integration/location_config/run.sh
index 377626eb..e15cf7b3 100755
--- a/test/tests/location_config/run.sh
+++ b/test/integration/location_config/run.sh
@@ -7,7 +7,7 @@ test_comment='### This is a test comment'
 vhost_path='/etc/nginx/vhost.d'
 
 # Create custom location configuration file to be bind mounted
-location_file="${GITHUB_WORKSPACE}/test/tests/location_config/le2.wtf"
+location_file="${GITHUB_WORKSPACE}/test/integration/location_config/le2.wtf"
 echo "$test_comment" > "$location_file"
 
 # Create le1.wtf configuration file, *.le3.wtf and test.* from inside the nginx container
diff --git a/test/tests/ocsp_must_staple/expected-std-out.txt b/test/integration/ocsp_must_staple/expected-std-out.txt
similarity index 100%
rename from test/tests/ocsp_must_staple/expected-std-out.txt
rename to test/integration/ocsp_must_staple/expected-std-out.txt
diff --git a/test/tests/ocsp_must_staple/run.sh b/test/integration/ocsp_must_staple/run.sh
similarity index 100%
rename from test/tests/ocsp_must_staple/run.sh
rename to test/integration/ocsp_must_staple/run.sh
diff --git a/test/tests/permissions_custom/expected-std-out.txt b/test/integration/permissions_custom/expected-std-out.txt
similarity index 100%
rename from test/tests/permissions_custom/expected-std-out.txt
rename to test/integration/permissions_custom/expected-std-out.txt
diff --git a/test/tests/permissions_custom/run.sh b/test/integration/permissions_custom/run.sh
similarity index 100%
rename from test/tests/permissions_custom/run.sh
rename to test/integration/permissions_custom/run.sh
diff --git a/test/tests/permissions_default/expected-std-out.txt b/test/integration/permissions_default/expected-std-out.txt
similarity index 100%
rename from test/tests/permissions_default/expected-std-out.txt
rename to test/integration/permissions_default/expected-std-out.txt
diff --git a/test/tests/permissions_default/run.sh b/test/integration/permissions_default/run.sh
similarity index 100%
rename from test/tests/permissions_default/run.sh
rename to test/integration/permissions_default/run.sh
diff --git a/test/tests/private_keys/expected-std-out.txt b/test/integration/private_keys/expected-std-out.txt
similarity index 100%
rename from test/tests/private_keys/expected-std-out.txt
rename to test/integration/private_keys/expected-std-out.txt
diff --git a/test/tests/private_keys/run.sh b/test/integration/private_keys/run.sh
similarity index 100%
rename from test/tests/private_keys/run.sh
rename to test/integration/private_keys/run.sh
diff --git a/test/tests/symlinks/expected-std-out.txt b/test/integration/symlinks/expected-std-out.txt
similarity index 100%
rename from test/tests/symlinks/expected-std-out.txt
rename to test/integration/symlinks/expected-std-out.txt
diff --git a/test/tests/symlinks/run.sh b/test/integration/symlinks/run.sh
similarity index 100%
rename from test/tests/symlinks/run.sh
rename to test/integration/symlinks/run.sh
diff --git a/test/tests/test-functions.sh b/test/integration/test-functions.sh
similarity index 100%
rename from test/tests/test-functions.sh
rename to test/integration/test-functions.sh
diff --git a/test/tests/unit_tests/expected-std-out.txt b/test/integration/unit_tests/expected-std-out.txt
similarity index 100%
rename from test/tests/unit_tests/expected-std-out.txt
rename to test/integration/unit_tests/expected-std-out.txt
diff --git a/test/run.sh b/test/run.sh
index 7c9abb8c..1ea0a031 100755
--- a/test/run.sh
+++ b/test/run.sh
@@ -208,8 +208,8 @@ if [[ -z $GITHUB_ACTIONS ]] && [[ -f "$dir/local_test_env.sh" ]]; then
 	source "$dir/local_test_env.sh"
 fi
 
-# shellcheck source=./tests/test-functions.sh
-source "$dir/tests/test-functions.sh"
+# shellcheck source=./integration/test-functions.sh
+source "$dir/integration/test-functions.sh"
 ## End of additional code
 
 usage() {
@@ -296,12 +296,12 @@ for conf in "${configs[@]}"; do
 	for testName in ${globalTests[@]} ${imageTests[@]}; do
 		[ "${testPaths[$testName]}" ] && continue
 
-		if [ -d "$confDir/tests/$testName" ]; then
+		if [ -d "$confDir/integration/$testName" ]; then
 			# Test directory found relative to the conf file
-			testPaths[$testName]="$confDir/tests/$testName"
-		elif [ -d "$dir/tests/$testName" ]; then
+			testPaths[$testName]="$confDir/integration/$testName"
+		elif [ -d "$dir/integration/$testName" ]; then
 			# Test directory found in the main tests/ directory
-			testPaths[$testName]="$dir/tests/$testName"
+			testPaths[$testName]="$dir/integration/$testName"
 		fi
 	done
 done
diff --git a/test/unit/test-template.sh b/test/unit/test-template.sh
new file mode 100644
index 00000000..084a6dba
--- /dev/null
+++ b/test/unit/test-template.sh
@@ -0,0 +1,8 @@
+#! /bin/sh
+
+testEquality()
+{
+  assertEquals 1 1
+}
+
+suite_addTest testEquality