Config setter (#119)

* TDD Config.SetField

* Config.SetField

Author: Andrea Spacca

pkg/genlib/config/config.go

@@ -154,3 +154,8 @@ func (c Config) GetField(fieldName string) (ConfigField, bool) {
 	v, ok := c.m[fieldName]
 	return v, ok
 }
+
+func (c Config) SetField(fieldName string, configField ConfigField) {
+	configField.Name = fieldName
+	c.m[fieldName] = configField
+}

pkg/genlib/config/config_test.go

@@ -31,6 +31,23 @@ func TestLoadConfig(t *testing.T) {
 	assert.Equal(t, "foobar", f.Value.(string))
 }
 
+func TestSetField(t *testing.T) {
+	fs := afero.NewMemMapFs()
+	configFile := "/cfg.yml"
+
+	data := []byte(sampleConfigFile)
+	afero.WriteFile(fs, configFile, data, 0666)
+
+	cfg, err := LoadConfig(fs, configFile)
+	assert.Nil(t, err)
+
+	cfg.SetField("field", ConfigField{Value: "foobaz"})
+	f, ok := cfg.GetField("field")
+	assert.True(t, ok)
+	assert.Equal(t, "field", f.Name)
+	assert.Equal(t, "foobaz", f.Value.(string))
+}
+
 func TestIsValidForDateField(t *testing.T) {
 	testCases := []struct {
 		scenario string