diff --git a/internal/config/config.invalid.yml b/internal/config/config.invalid.yml
new file mode 100644
index 00000000..93cedb17
--- /dev/null
+++ b/internal/config/config.invalid.yml
@@ -0,0 +1 @@
+invalid testdata file
\ No newline at end of file
diff --git a/internal/config/config.test.yml b/internal/config/config.test.yml
new file mode 100644
index 00000000..c0d7fc9e
--- /dev/null
+++ b/internal/config/config.test.yml
@@ -0,0 +1,63 @@
+db:
+  path: diun.db
+
+watch:
+  workers: 100
+  schedule: "*/30 * * * * *"
+  os: linux
+  arch: amd64
+
+notif:
+  mail:
+    enable: false
+    host: localhost
+    port: 25
+    ssl: false
+    insecure_skip_verify: false
+    username:
+    password:
+    from:
+    to:
+  webhook:
+    enable: false
+    endpoint: http://webhook.foo.com/sd54qad89azd5a
+    method: GET
+    headers:
+      Content-Type: application/json
+      Authorization: Token123456
+    timeout: 10
+
+regopts:
+  someregopts:
+    timeout: 5
+  bintrayoptions:
+    username: foo
+    password: bar
+
+image:
+  - name: docker.io/crazymax/nextcloud:latest
+    regopts_id: someregopts
+  - name: crazymax/swarm-cronjob
+    watch_repo: true
+    include_tags:
+      - ^1\.2\..*
+  - name: jfrog-docker-reg2.bintray.io/jfrog/artifactory-oss:4.0.0
+    regopts_id: bintrayoptions
+  - name: docker.bintray.io/jfrog/xray-server:2.8.6
+    watch_repo: true
+    max_tags: 50
+  - name: quay.io/coreos/hyperkube
+  - name: docker.io/portainer/portainer
+    watch_repo: true
+    max_tags: 10
+    include_tags:
+      - ^(0|[1-9]\d*)\..*
+  - name: traefik
+    watch_repo: true
+  - name: docker.io/graylog/graylog:3.2.0
+  - name: jacobalberty/unifi:5.9
+  - name: quay.io/coreos/hyperkube:v1.1.7-coreos.1
+  - name: crazymax/ddns-route53
+    watch_repo: true
+    include_tags:
+      - ^1\..*
diff --git a/internal/config/config_test.go b/internal/config/config_test.go
new file mode 100644
index 00000000..e9315d32
--- /dev/null
+++ b/internal/config/config_test.go
@@ -0,0 +1,147 @@
+package config_test
+
+import (
+	"testing"
+
+	"github.com/crazy-max/diun/internal/config"
+	"github.com/crazy-max/diun/internal/model"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLoad(t *testing.T) {
+	cases := []struct {
+		name     string
+		flags    model.Flags
+		wantData *config.Config
+		wantErr  bool
+	}{
+		{
+			name:    "Fail on non-existing file",
+			flags:   model.Flags{},
+			wantErr: true,
+		},
+		{
+			name: "Fail on wrong file format",
+			flags: model.Flags{
+				Cfgfile: "config.invalid.yml",
+			},
+			wantErr: true,
+		},
+		{
+			name: "Success",
+			flags: model.Flags{
+				Cfgfile: "config.test.yml",
+			},
+			wantData: &config.Config{
+				Flags: model.Flags{
+					Cfgfile: "config.test.yml",
+				},
+				App: model.App{
+					ID:      "diun",
+					Name:    "Diun",
+					Desc:    "Docker image update notifier",
+					URL:     "https://github.com/crazy-max/diun",
+					Author:  "CrazyMax",
+					Version: "test",
+				},
+				Db: model.Db{
+					Path: "diun.db",
+				},
+				Watch: model.Watch{
+					Workers:  100,
+					Schedule: "*/30 * * * * *",
+					Os:       "linux",
+					Arch:     "amd64",
+				},
+				Notif: model.Notif{
+					Mail: model.Mail{
+						Enable:             false,
+						Host:               "localhost",
+						Port:               25,
+						SSL:                false,
+						InsecureSkipVerify: false,
+					},
+					Webhook: model.Webhook{
+						Enable:   false,
+						Endpoint: "http://webhook.foo.com/sd54qad89azd5a",
+						Method:   "GET",
+						Headers: map[string]string{
+							"Content-Type":  "application/json",
+							"Authorization": "Token123456",
+						},
+						Timeout: 10,
+					},
+				},
+				RegOpts: map[string]model.RegOpts{
+					"someregopts": {
+						Timeout: 5,
+					},
+					"bintrayoptions": {
+						Username: "foo",
+						Password: "bar",
+					},
+				},
+				Image: []model.Image{
+					{
+						Name:      "docker.io/crazymax/nextcloud:latest",
+						RegOptsID: "someregopts",
+					},
+					{
+						Name:      "crazymax/swarm-cronjob",
+						WatchRepo: true,
+						IncludeTags: []string{
+							`^1\.2\..*`,
+						},
+					},
+					{
+						Name:      "jfrog-docker-reg2.bintray.io/jfrog/artifactory-oss:4.0.0",
+						RegOptsID: "bintrayoptions",
+					},
+					{
+						Name:      "docker.bintray.io/jfrog/xray-server:2.8.6",
+						WatchRepo: true,
+						MaxTags:   50,
+					},
+					{
+						Name: "quay.io/coreos/hyperkube",
+					},
+					{
+						Name:      "docker.io/portainer/portainer",
+						WatchRepo: true,
+						MaxTags:   10,
+						IncludeTags: []string{
+							`^(0|[1-9]\d*)\..*`,
+						},
+					},
+					{
+						Name:      "traefik",
+						WatchRepo: true,
+					},
+					{
+						Name: "docker.io/graylog/graylog:3.2.0",
+					},
+					{
+						Name: "jacobalberty/unifi:5.9",
+					},
+					{
+						Name: "quay.io/coreos/hyperkube:v1.1.7-coreos.1",
+					},
+					{
+						Name:      "crazymax/ddns-route53",
+						WatchRepo: true,
+						IncludeTags: []string{
+							`^1\..*`,
+						},
+					},
+				},
+			},
+		},
+	}
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg, err := config.Load(tt.flags, "test")
+			assert.Equal(t, tt.wantData, cfg)
+			assert.Equal(t, tt.wantErr, err != nil)
+		})
+	}
+}