diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 3fd37e6..49e12c3 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -1,7 +1,7 @@
 on: [pull_request]
 
 env:
-  GO_VERSION: '^1.21.2'
+  GO_VERSION: '^1.21'
 
 jobs:
   test:
@@ -12,163 +12,15 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: ${{ env.GO_VERSION }}
-      -
-        name: Prepare coverage
-        run: |
-          go install github.com/jandelgado/gcov2lcov@latest
       -
         name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Prepare coverage report
-        env:
-          CC_TEST_REPORTER_ID: ${{ secrets.CODECLIMATE_TOKEN }}
-          CC_TR_URL: "https://codeclimate.com/downloads/test-reporter"
-          CC_TR_BIN: "test-reporter-latest-linux-amd64"
-        run: |
-          mkdir -p coverage && \
-          curl -L ${CC_TR_URL}/${CC_TR_BIN} > ./cc-test-reporter && \
-          chmod +x ./cc-test-reporter && \
-          ./cc-test-reporter before-build
       -
         name: Run tests
-        run: |
-          go test -v ./... -race -coverprofile=coverage/gcov.out -covermode=atomic && \
-          gcov2lcov -infile=coverage/gcov.out -outfile=coverage/lcov.info
-      -
-        name: Push coverage
         env:
           CC_TEST_REPORTER_ID: ${{ secrets.CODECLIMATE_TOKEN }}
         run: |
-          ./cc-test-reporter after-build -t lcov
-  check-formatting:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Check formatting
-        run: |
-          gofmt -s -e -d -l . | tee /tmp/gofmt.output && [ $(cat /tmp/gofmt.output | wc -l) -eq 0 ]
-  check-smells:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Check code smells
-        run: |
-          go vet ./...
-  check-complexity:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Install gocyclo
-        run: |
-          go install github.com/fzipp/gocyclo/cmd/gocyclo@latest
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Check cyclomatic complexity
-        run: |
-          gocyclo -over 15 .
-  check-style:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Install golint
-        run: |
-          go install golang.org/x/lint/golint@latest
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Check Style
-        run: |
-          golint ./...
-  check-ineffectual-assignments:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Install ineffassign
-        run: |
-          go install github.com/gordonklaus/ineffassign@latest
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Download dependencies to local
-        run : |
-          go mod download
-      -
-        name: Check ineffectual assignments
-        run: |
-          ineffassign ./...
-  check-spelling:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Install spellchecker
-        run: |
-          go install github.com/client9/misspell/cmd/misspell@latest
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Check spelling
-        run: |
-          misspell -error .
-  staticcheck:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ env.GO_VERSION }}
-      -
-        name: Install staticcheck
-        run: |
-          go install honnef.co/go/tools/cmd/staticcheck@latest
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Download dependencies to local
-        run : |
-          go mod download
-      -
-        name: Run staticcheck
-        run: |
-          staticcheck ./...
+          scripts/check.sh all
   check-license:
     runs-on: ubuntu-latest
     steps:
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ad0a524
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/coverage/
+/cc-test-reporter
diff --git a/scripts/check.sh b/scripts/check.sh
new file mode 100755
index 0000000..3190c77
--- /dev/null
+++ b/scripts/check.sh
@@ -0,0 +1,118 @@
+#!/bin/env -S bash -l
+
+set -eu
+
+is_codeclimate_setup() {
+    set +u
+    if [ -z "${CC_TEST_REPORTER_ID}" ]; then
+        set -u
+        return 1
+    fi
+    set -u
+    return 0
+}
+
+codeclimate_precheck() {
+    # This function requires CC_TEST_REPORTER_ID env var, containing
+    # CodeClimate Token, to be present in the environment
+    if is_codeclimate_setup; then
+        echo "*** CodeClimate is setup"
+        CC_TEST_REPORTER_URL=https://codeclimate.com/downloads/test-reporter/
+        CC_TEST_REPORTER_BIN=test-reporter-latest-linux-amd64
+        curl -L ${CC_TEST_REPORTER_URL}/${CC_TEST_REPORTER_BIN} > ./cc-test-reporter
+        chmod +x ./cc-test-reporter
+        ./cc-test-reporter before-build
+    else
+        echo "*** CodeClimate is not setup"
+    fi
+}
+
+convert_coverage_report_gcov2lcov() {
+    go install github.com/jandelgado/gcov2lcov@latest
+    gcov2lcov -infile=${1} -outfile=${2}
+}
+
+tests_check() {
+    echo "*** Run unit tests"
+    EXTRA_TEST_PARAMS=""
+    if is_codeclimate_setup; then
+        mkdir -p coverage
+        EXTRA_TEST_PARAMS="${EXTRA_TEST_PARAMS}-coverprofile=coverage/gcov.out "
+    fi
+    go test -v ./... -race -covermode=atomic ${EXTRA_TEST_PARAMS}
+    if is_codeclimate_setup; then
+        convert_coverage_report_gcov2lcov coverage/gcov.out coverage/lcov.info
+        ./cc-test-reporter after-build -t lcov
+    fi
+}
+
+complexity_check() {
+    echo "*** Complexity check"
+    go install github.com/fzipp/gocyclo/cmd/gocyclo@latest
+    gocyclo -avg -top 5 -over 15 .
+}
+
+format_check() {
+    echo "*** Format check"
+    gofmt -s -e -d -l . | tee /tmp/gofmt.output && [ $(cat /tmp/gofmt.output | wc -l) -eq 0 ]
+}
+
+inefficiencies_check() {
+    echo "*** Inefficiencies check"
+    go install github.com/gordonklaus/ineffassign@latest
+    go mod tidy
+    ineffassign ./...
+}
+
+smells_check() {
+    echo "*** Smells check"
+    go mod tidy
+    go vet ./...
+}
+
+spelling_check() {
+    echo "*** Spelling check"
+    go install github.com/client9/misspell/cmd/misspell@latest
+    misspell -error .
+}
+
+static_check() {
+    echo "*** Static check"
+    go install honnef.co/go/tools/cmd/staticcheck@latest
+    go mod download
+    staticcheck ./...
+}
+
+style_check() {
+    echo "*** Style check"
+    go install golang.org/x/lint/golint@latest
+    golint ./...
+}
+
+find_functions() {
+    HOOK=${1:-check}
+
+    declare -F | awk '{print $3}' | grep -E "_${HOOK}$" | sed -e 's/_${HOOK}$//'
+}
+
+try() {
+    if find_functions "check" | grep -w ${1} >/dev/null; then
+	${1} && echo "=== OK!" || (echo "=== NOK!" && return -1)
+    else
+        echo No ${1} available
+	return 255
+    fi
+}
+
+if [ "${1}" == "all" ]; then
+    failure=0
+    set +e
+    codeclimate_precheck
+    for check in $(find_functions "check"); do
+        try ${check} || failure=1
+    done
+    set -e
+    exit ${failure}
+else
+    try ${1}
+fi