diff --git a/Makefile b/Makefile
index d166862..3af6b3d 100644
--- a/Makefile
+++ b/Makefile
@@ -34,6 +34,7 @@ all:
 	@echo "make release-major  - Generate new major release"
 	@echo "make release-minor  - Generate new minor release"
 	@echo "make changelog      - Show changes since last release"
+	@echo "make test-model-validate      - Run salt jsonschema validation"
 
 install:
 	# Formula
@@ -41,6 +42,7 @@ install:
 	cp -a $(FORMULANAME) $(DESTDIR)/$(SALTENVDIR)/
 	[ ! -d _modules ] || cp -a _modules $(DESTDIR)/$(SALTENVDIR)/
 	[ ! -d _states ] || cp -a _states $(DESTDIR)/$(SALTENVDIR)/ || true
+	[ ! -d _engines ] || cp -a _engines $(DESTDIR)/$(SALTENVDIR)/ || true
 	[ ! -d _grains ] || cp -a _grains $(DESTDIR)/$(SALTENVDIR)/ || true
 	# Metadata
 	[ -d $(DESTDIR)/$(RECLASSDIR)/service/$(FORMULANAME) ] || mkdir -p $(DESTDIR)/$(RECLASSDIR)/service/$(FORMULANAME)
@@ -52,6 +54,10 @@ lint:
 test:
 	[ ! -d tests ] || (cd tests; ./run_tests.sh)
 
+test-model-validate:
+	# TODO make it actually fail
+	[ ! -d $(FORMULANAME)/schemas/ ] || (cd tests; ./run_tests.sh model-validate)
+
 release-major: check-changes
 	@echo "Current version is $(VERSION), new version is $(NEW_MAJOR_VERSION)"
 	@[ $(VERSION_MAJOR) != $(NEW_MAJOR_VERSION) ] || (echo "Major version $(NEW_MAJOR_VERSION) already released, nothing to do. Do you want release-minor?" && exit 1)
@@ -119,4 +125,4 @@ clean:
 	[ ! -x "$(shell which kitchen)" ] || kitchen destroy
 	[ ! -d .kitchen ] || rm -rf .kitchen
 	[ ! -d tests/build ] || rm -rf tests/build
-	[ ! -d build ] || rm -rf build
+	[ ! -d build ] || rm -rf build
\ No newline at end of file
diff --git a/tests/pillar/client.sls b/tests/pillar/client.sls
new file mode 100644
index 0000000..9383adb
--- /dev/null
+++ b/tests/pillar/client.sls
@@ -0,0 +1,23 @@
+grafana:
+  client:
+    enabled: true
+    server:
+      protocol: https
+      host: grafana.host
+      port: 3000
+      user: admin
+      password: password
+    datasource:
+      elasticsearch:
+        type: elasticsearch
+        host: log01.domain.com
+        port: 80
+        index: grafana-dash
+    dashboard:
+      system_metrics:
+        title: "Generic system metrics"
+        style: dark
+        editable: false
+        row:
+          top:
+            title: "First row"
\ No newline at end of file
diff --git a/tests/pillar/server.sls b/tests/pillar/server.sls
new file mode 100644
index 0000000..875029d
--- /dev/null
+++ b/tests/pillar/server.sls
@@ -0,0 +1,27 @@
+grafana:
+  server:
+    enabled: true
+    bind:
+      address: 1.2.3.4
+      port: 3000
+    admin:
+      user: admin
+      password: passwd
+    auth:
+      ldap:
+        enabled: true
+        host: '127.0.0.1'
+        port: 389
+        use_ssl: false
+        bind_dn: "cn=admin,dc=grafana,dc=org"
+        bind_password: "grafana"
+        user_search_filter: "(cn=%s)"
+        user_search_base_dns:
+        - "dc=grafana,dc=org"
+    database:
+      engine: postgresql
+      host: localhost
+      port: 5432
+      name: grafana
+      user: grafana
+      password: passwd
\ No newline at end of file
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
new file mode 100755
index 0000000..4a7ce6e
--- /dev/null
+++ b/tests/run_tests.sh
@@ -0,0 +1,274 @@
+#!/usr/bin/env bash
+
+###
+# Script requirments:
+#apt-get install -y python-yaml virtualenv git
+
+set -e
+[ -n "$DEBUG" ] && set -x
+
+CURDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+METADATA=${CURDIR}/../metadata.yml
+FORMULA_NAME=$(cat $METADATA | python -c "import sys,yaml; print yaml.load(sys.stdin)['name']")
+FORMULA_META_DIR=${CURDIR}/../${FORMULA_NAME}/meta
+
+## Overrideable parameters
+PILLARDIR=${PILLARDIR:-${CURDIR}/pillar}
+BUILDDIR=${BUILDDIR:-${CURDIR}/build}
+VENV_DIR=${VENV_DIR:-${BUILDDIR}/virtualenv}
+MOCK_BIN_DIR=${MOCK_BIN_DIR:-${CURDIR}/mock_bin}
+DEPSDIR=${BUILDDIR}/deps
+SCHEMARDIR=${SCHEMARDIR:-"${CURDIR}/../${FORMULA_NAME}/schemas/"}
+
+SALT_FILE_DIR=${SALT_FILE_DIR:-${BUILDDIR}/file_root}
+SALT_PILLAR_DIR=${SALT_PILLAR_DIR:-${BUILDDIR}/pillar_root}
+SALT_CONFIG_DIR=${SALT_CONFIG_DIR:-${BUILDDIR}/salt}
+SALT_CACHE_DIR=${SALT_CACHE_DIR:-${SALT_CONFIG_DIR}/cache}
+SALT_CACHE_EXTMODS_DIR=${SALT_CACHE_EXTMODS_DIR:-${SALT_CONFIG_DIR}/cache_master_extmods}
+
+SALT_OPTS="${SALT_OPTS} --retcode-passthrough --local -c ${SALT_CONFIG_DIR} --log-file=/dev/null"
+
+if [ "x${SALT_VERSION}" != "x" ]; then
+    PIP_SALT_VERSION="==${SALT_VERSION}"
+fi
+
+## Functions
+log_info() {
+    echo -e "[INFO] $*"
+}
+
+log_err() {
+    echo -e "[ERROR] $*" >&2
+}
+
+setup_virtualenv() {
+    log_info "Setting up Python virtualenv"
+    dependency_check virtualenv
+    virtualenv $VENV_DIR
+    source ${VENV_DIR}/bin/activate
+    python -m pip install salt${PIP_SALT_VERSION}
+    python -m pip install jsonschema
+    if [[ -f ${CURDIR}/pip_requirements.txt ]]; then
+       python -m pip install -r ${CURDIR}/pip_requirements.txt
+    fi
+}
+
+setup_mock_bin() {
+    # If some state requires a binary, a lightweight replacement for
+    # such binary can be put into MOCK_BIN_DIR for test purposes
+    if [ -d "${MOCK_BIN_DIR}" ]; then
+        PATH="${MOCK_BIN_DIR}:$PATH"
+        export PATH
+    fi
+}
+
+setup_pillar() {
+    [ ! -d ${SALT_PILLAR_DIR} ] && mkdir -p ${SALT_PILLAR_DIR}
+    echo "base:" > ${SALT_PILLAR_DIR}/top.sls
+    for pillar in ${PILLARDIR}/*; do
+        grep ${FORMULA_NAME}: ${pillar} &>/dev/null || continue
+        state_name=$(basename ${pillar%.sls})
+        echo -e "  ${state_name}:\n    - ${state_name}" >> ${SALT_PILLAR_DIR}/top.sls
+    done
+}
+
+setup_salt() {
+    [ ! -d ${SALT_FILE_DIR} ] && mkdir -p ${SALT_FILE_DIR}
+    [ ! -d ${SALT_CONFIG_DIR} ] && mkdir -p ${SALT_CONFIG_DIR}
+    [ ! -d ${SALT_CACHE_DIR} ] && mkdir -p ${SALT_CACHE_DIR}
+    [ ! -d ${SALT_CACHE_EXTMODS_DIR} ] && mkdir -p ${SALT_CACHE_EXTMODS_DIR}
+
+    echo "base:" > ${SALT_FILE_DIR}/top.sls
+    for pillar in ${PILLARDIR}/*.sls; do
+        grep ${FORMULA_NAME}: ${pillar} &>/dev/null || continue
+        state_name=$(basename ${pillar%.sls})
+        echo -e "  ${state_name}:\n    - ${FORMULA_NAME}" >> ${SALT_FILE_DIR}/top.sls
+    done
+
+    cat << EOF > ${SALT_CONFIG_DIR}/minion
+file_client: local
+cachedir: ${SALT_CACHE_DIR}
+extension_modules:  ${SALT_CACHE_EXTMODS_DIR}
+verify_env: False
+minion_id_caching: False
+
+file_roots:
+  base:
+  - ${SALT_FILE_DIR}
+  - ${CURDIR}/..
+
+pillar_roots:
+  base:
+  - ${SALT_PILLAR_DIR}
+  - ${PILLARDIR}
+EOF
+}
+
+fetch_dependency() {
+    # example: fetch_dependency "linux:https://github.com/salt-formulas/salt-formula-linux"
+    dep_name="$(echo $1|cut -d : -f 1)"
+    dep_source="$(echo $1|cut -d : -f 2-)"
+    dep_root="${DEPSDIR}/$(basename $dep_source .git)"
+    dep_metadata="${dep_root}/metadata.yml"
+
+    dependency_check git
+    [ -d $dep_root ] && { log_info "Dependency $dep_name already fetched"; return 0; }
+
+    log_info "Fetching dependency $dep_name"
+    [ ! -d ${DEPSDIR} ] && mkdir -p ${DEPSDIR}
+    git clone $dep_source ${DEPSDIR}/$(basename $dep_source .git)
+    ln -s ${dep_root}/${dep_name} ${SALT_FILE_DIR}/${dep_name}
+
+    METADATA="${dep_metadata}" install_dependencies
+}
+
+link_modules(){
+    # Link modules *.py files to temporary salt-root
+    local SALT_ROOT=${1:-$SALT_FILE_DIR}
+    local SALT_ENV=${2:-$DEPSDIR}
+
+    mkdir -p "${SALT_ROOT}/_modules/"
+    # from git, development versions
+    find ${SALT_ENV} -maxdepth 3 -mindepth 3 -path '*_modules*' -iname "*.py" -type f -print0 | while read -d $'\0' file; do
+      ln -fs $(readlink -e ${file}) "$SALT_ROOT"/_modules/$(basename ${file}) ;
+    done
+    salt_run saltutil.sync_all
+}
+
+install_dependencies() {
+    grep -E "^dependencies:" ${METADATA} >/dev/null || return 0
+    (python - | while read dep; do fetch_dependency "$dep"; done) << EOF
+import sys,yaml
+for dep in yaml.load(open('${METADATA}', 'ro'))['dependencies']:
+    print '%s:%s' % (dep["name"], dep["source"])
+EOF
+}
+
+clean() {
+    log_info "Cleaning up ${BUILDDIR}"
+    [ -d ${BUILDDIR} ] && rm -rf ${BUILDDIR} || exit 0
+}
+
+salt_run() {
+    [ -e ${VENV_DIR}/bin/activate ] && source ${VENV_DIR}/bin/activate
+    python $(which salt-call) ${SALT_OPTS} $*
+}
+
+prepare() {
+    [ -d ${BUILDDIR} ] && mkdir -p ${BUILDDIR}
+
+    [[ ! -f "${VENV_DIR}/bin/activate" ]] && setup_virtualenv
+    setup_mock_bin
+    setup_pillar
+    setup_salt
+    install_dependencies
+    link_modules
+}
+
+lint_releasenotes() {
+    [[ ! -f "${VENV_DIR}/bin/activate" ]] && setup_virtualenv
+    source ${VENV_DIR}/bin/activate
+    python -m pip install reno
+    reno lint ${CURDIR}/../
+}
+
+lint() {
+#    lint_releasenotes
+    log_err "TODO: lint_releasenotes"
+}
+
+run() {
+    for pillar in ${PILLARDIR}/*.sls; do
+        grep ${FORMULA_NAME}: ${pillar} &>/dev/null || continue
+        state_name=$(basename ${pillar%.sls})
+        salt_run grains.set 'noservices' False force=True
+
+        echo "Checking state ${FORMULA_NAME}.${state_name} ..."
+        salt_run --id=${state_name} state.show_sls ${FORMULA_NAME} || (log_err "Execution of ${FORMULA_NAME}.${state_name} failed"; exit 1)
+
+        # Check that all files in 'meta' folder can be rendered using any valid pillar
+        for meta in `find ${FORMULA_META_DIR} -type f`; do
+            meta_name=$(basename ${meta})
+            echo "Checking meta ${meta_name} ..."
+            salt_run --out=quiet --id=${state_name} cp.get_template ${meta} ${SALT_CACHE_DIR}/${meta_name} \
+              || { log_err "Failed to render meta ${meta} using pillar ${FORMULA_NAME}.${state_name}"; exit 1; }
+            cat ${SALT_CACHE_DIR}/${meta_name}
+        done
+    done
+}
+
+real_run() {
+    for pillar in ${PILLARDIR}/*.sls; do
+        state_name=$(basename ${pillar%.sls})
+        salt_run --id=${state_name} state.sls ${FORMULA_NAME} || { log_err "Execution of ${FORMULA_NAME}.${state_name} failed"; exit 1; }
+    done
+}
+
+run_model_validate(){
+    if [ -d ${SCHEMARDIR} ]; then
+      # model validator require py modules
+      fetch_dependency "salt:https://github.com/salt-formulas/salt-formula-salt"
+      link_modules
+      # Rendered Example:
+      # python $(which salt-call) --local -c /test1/maas/tests/build/salt --id=maas_cluster modelschema.model_validate maas cluster
+      for role in ${SCHEMARDIR}/*.yaml; do
+          state_name=$(basename "${role%*.yaml}")
+          minion_id="${state_name}"
+          salt_run saltutil.clear_cache; salt_run saltutil.refresh_pillar; salt_run saltutil.sync_all;
+          salt_run -m ${DEPSDIR}/salt-formula-salt --id=${minion_id} modelschema.model_validate ${FORMULA_NAME} ${state_name} || { log_err "Execution of ${FORMULA_NAME}.${state_name} failed"; exit 1 ; }
+      done
+    else
+      log_info "${SCHEMARDIR} not found!";
+    fi
+}
+
+dependency_check() {
+  local DEPENDENCY_COMMANDS=$*
+
+  for DEPENDENCY_COMMAND in $DEPENDENCY_COMMANDS; do
+    which $DEPENDENCY_COMMAND > /dev/null || ( log_err "Command \"$DEPENDENCY_COMMAND\" can not be found in default path."; exit 1; )
+  done
+}
+
+_atexit() {
+    RETVAL=$?
+    trap true INT TERM EXIT
+
+    if [ $RETVAL -ne 0 ]; then
+        log_err "Execution failed"
+    else
+        log_info "Execution successful"
+    fi
+    return $RETVAL
+}
+
+## Main
+trap _atexit INT TERM EXIT
+
+case $1 in
+    clean)
+        clean
+        ;;
+    prepare)
+        prepare
+        ;;
+    lint)
+        lint
+        ;;
+    run)
+        run
+        ;;
+    real-run)
+        real_run
+        ;;
+    model-validate)
+       prepare
+       run_model_validate
+        ;;
+    *)
+        prepare
+#        lint
+        run
+        run_model_validate
+        ;;
+esac
\ No newline at end of file