feat: add mode selecting (#15)

Co-authored-by: Timo Behrendt <t.behrendt@t00n.de>
Co-committed-by: Timo Behrendt <t.behrendt@t00n.de>

pkg/config/config_test.go

@@ -1,69 +1,52 @@
 package config
 
 import (
+	"fmt"
 	"testing"
 )
 
+func testFactoryFileRelatedError(fileName string, expectedErrorText string) func(t *testing.T) {
+	return func(t *testing.T) {
+		c := Config{}
+		err := c.Load(fmt.Sprintf("./__mocks__/%s", fileName))
+
+		want := err != nil && err.Error() == expectedErrorText
+
+		if !want {
+			t.Fatalf("Expected error message %s, but got %s", expectedErrorText, err.Error())
+		}
+	}
+}
+
 func TestLoad(t *testing.T) {
 	t.Run("Can find file", testLoadCanFindFile())
-	t.Run("Cannot find file", testLoadCannotFindFile())
-	t.Run("Unmarshals from direct input", testLoadUnmarshalsFromDirectInput())
+	t.Run("Cannot find file", testFactoryFileRelatedError(
+		"nonexistent.yaml",
+		"failed to read config file: open ./__mocks__/nonexistent.yaml: no such file or directory",
+	))
+	t.Run("Missing CheckInterval in Scheduled mode", testFactoryFileRelatedError(
+		"testLoadMissingCheckInterval.yaml",
+		"failed to validate config: check interval must be set when mode is 'Scheduled'",
+	))
+	t.Run("Invalid mode", testFactoryFileRelatedError(
+		"testLoadInvalidMode.yaml",
+		"failed to validate config: mode must be one of 'RunOnce' or 'Scheduled'",
+	))
+	t.Run("Invalid YAML", testFactoryFileRelatedError(
+		"testLoadInvalidYAML.yaml",
+		"failed to unmarshal config file: yaml: line 2: did not find expected key",
+	))
 }
 
 func testLoadCanFindFile() func(t *testing.T) {
 	return func(t *testing.T) {
-
 		c := Config{}
 		err := c.Load("./__mocks__/testLoadCanFindFile.yaml")
 
-		want := c.DNSProvider.Type == "ionos" && c.ExternalIPProvider.Type == "plain"
+		want := err == nil && c.DNSProvider.Type == "ionos" && c.ExternalIPProvider.Type == "plain" && c.Mode == "RunOnce"
 
 		if !want || err != nil {
-			t.Fatalf("DnsProviderName couldn't be properly loaded or unmarshaled, Load() = %v, want %v", err, want)
-		}
-	}
-}
-
-func testLoadCannotFindFile() func(t *testing.T) {
-	return func(t *testing.T) {
-		c := Config{}
-		err := c.Load("nonexistent.yaml")
-		want := err != nil
-
-		if !want {
-			t.Fatalf("Config didn't throw an error")
-		}
-	}
-}
-
-func testLoadUnmarshalsFromDirectInput() func(t *testing.T) {
-	return func(t *testing.T) {
-		c := Config{}
-		err := c.Load(`---
-ip_provider:
-  type: plain
-  config:
-    url: https://ifconfig.me
-dns_provider:
-  type: ionos
-  config:
-    api_key: exampleAPIKey
-    base_url: https://example.com
-notification_provider:
-  type: gotify
-  config:
-    url: https://example.com
-domains:
-  - tld: example.com
-    subdomains:
-      - "@"
-      - www
-check_interval: 0 0 0/6 * * * *`)
-
-		want := c.DNSProvider.Type == "ionos" && c.ExternalIPProvider.Type == "plain" && c.NotificationProvider.Type == "gotify"
-
-		if !want || err != nil {
-			t.Fatalf("DnsProviderName couldn't be properly loaded or unmarshaled, Load() = %v, want %v", err, want)
+			t.Fatalf("Failed to load config file, expected no errors but got: %s", err)
 		}
 	}
 }