add test to override values from config when args are present

config/setup_test.go

@@ -42,6 +42,21 @@ func fixArrayFromCtx(ctx *cli.Context, key string, expected []string) []string {
 	return expected
 }
 
+func readTestConfig() (*Config, error) {
+	content, err := os.ReadFile("assets/test_config.toml")
+	if err != nil {
+		return nil, err
+	}
+
+	expectedConfig := &Config{}
+	err = toml.Unmarshal(content, expectedConfig)
+	if err != nil {
+		return nil, err
+	}
+
+	return expectedConfig, nil
+}
+
 func TestReadConfigShouldReturnEmptyConfigWhenConfigArgEmpty(t *testing.T) {
 	runApp(
 		t,
@@ -79,6 +94,39 @@ func TestReadConfigShouldReturnConfigFromFileWhenConfigArgPresent(t *testing.T)
 	)
 }
 
+func TestValuesReadFromConfigFileShouldBeOverwrittenByArgs(t *testing.T) {
+	runApp(
+		t,
+		func(ctx *cli.Context) error {
+			cfg, err := ReadConfig(ctx)
+
+			MergeConfig(ctx, cfg)
+
+			expectedConfig, err := readTestConfig()
+			if err != nil {
+				return err
+			}
+
+			expectedConfig.LogLevel = "debug"
+			expectedConfig.Gitea.Root = "not-codeberg.org"
+			expectedConfig.ACME.AcceptTerms = true
+			expectedConfig.Server.Host = "172.17.0.2"
+			expectedConfig.Server.BlacklistedPaths = append(expectedConfig.Server.BlacklistedPaths, ALWAYS_BLACKLISTED_PATHS...)
+
+			assert.Equal(t, expectedConfig, cfg)
+
+			return err
+		},
+		[]string{
+			"--config-file", "assets/test_config.toml",
+			"--log-level", "debug",
+			"--gitea-root", "not-codeberg.org",
+			"--acme-accept-terms",
+			"--host", "172.17.0.2",
+		},
+	)
+}
+
 func TestMergeConfigShouldReplaceAllExistingValuesGivenAllArgsExist(t *testing.T) {
 	runApp(
 		t,