diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 11954a41..c806841d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,6 +28,41 @@ jobs:
           parallel: true
           flag-name: ${{ join(matrix.*, ' ') }}
 
+  test-integration:
+    strategy:
+      matrix:
+        go-version: [1.20.x]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    env:
+      GOCOVERDIR: _icoverdir_
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Integration tests
+        run: |
+          mkdir _icoverdir_
+          make build-with-coverage
+          cp examples/complete/lefthook.yml .
+      # TODO: prepare a framework to test the results
+      - run: |
+          ./lefthook dump
+          ./lefthook dump --json
+          ./lefthook dump --toml
+      - name: Format coverage
+        run: |
+          go tool covdata textfmt -i _icoverdir_ -o coverage.out
+      - name: Report coverage
+        uses: coverallsapp/github-action@v2
+        with:
+          file: coverage.out
+          parallel: true
+          flag-name: integration-${{ join(matrix.*, ' ') }}
+
   build:
     runs-on: ubuntu-latest
     steps:
@@ -53,9 +88,11 @@ jobs:
 
   coverage:
     runs-on: ubuntu-latest
-    needs: test
+    needs:
+      - test
+      - test-integration
     steps:
       - uses: coverallsapp/github-action@v2
         with:
-          carryforward: "1.19.x ubuntu-latest,1.19.x macos-latest,1.19.x windows-latest"
+          carryforward: "integration-1.20.x ubuntu-latest,integration-1.20.x macos-latest,integration-1.20.x windows-latest,1.19.x ubuntu-latest,1.19.x macos-latest,1.19.x windows-latest"
           parallel-finished: true
diff --git a/Makefile b/Makefile
index e246c64e..63834a69 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,17 @@ COMMIT_HASH = $(shell git rev-parse HEAD)
 build:
 	go build -ldflags "-s -w -X github.com/evilmartians/lefthook/internal/version.commit=$(COMMIT_HASH)" -o lefthook
 
+build-with-coverage:
+	go build -cover -ldflags "-s -w -X github.com/evilmartians/lefthook/internal/version.commit=$(COMMIT_HASH)" -o lefthook
+
 test:
 	go test -cpu 24 -race -count=1 -timeout=30s ./...
 
+test-integration: build-with-coverage
+	./lefthook dump
+	./lefthook dump --json
+	./lefthook dump --toml
+
 bench:
 	go test -cpu 24 -race -run=Bench -bench=. ./...
 
diff --git a/internal/config/command.go b/internal/config/command.go
index bcb86aa5..f30ad6aa 100644
--- a/internal/config/command.go
+++ b/internal/config/command.go
@@ -12,7 +12,7 @@ import (
 var errFilesIncompatible = errors.New("One of your runners contains incompatible file types")
 
 type Command struct {
-	Run string `mapstructure:"run"`
+	Run string `mapstructure:"run" yaml:"run" toml:"run" json:"run"`
 
 	Skip  interface{}       `mapstructure:"skip"  yaml:",omitempty"  toml:"skip,omitempty"  json:"skip,omitempty"`
 	Only  interface{}       `mapstructure:"only"  yaml:",omitempty"  toml:"only,omitempty,inline"  json:"only,omitempty"`
diff --git a/internal/config/script.go b/internal/config/script.go
index a1efd3fc..352d66f8 100644
--- a/internal/config/script.go
+++ b/internal/config/script.go
@@ -10,7 +10,7 @@ import (
 )
 
 type Script struct {
-	Runner string `mapstructure:"runner"`
+	Runner string `mapstructure:"runner" yaml:"runner" toml:"runner" json:"runner"`
 
 	Skip interface{}       `mapstructure:"skip" yaml:",omitempty" toml:"skip,omitempty" json:"skip,omitempty"`
 	Only interface{}       `mapstructure:"only" yaml:",omitempty" toml:"only,omitempty,inline" json:"only,omitempty"`