Add first basic unit test for client/config

client/config_test.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"bytes"
+	"github.com/sirupsen/logrus"
+	"strings"
+	"testing"
+)
+
+func TestGenerateExampleConfig(t *testing.T) {
+	testOutput := bytes.Buffer{}
+	logrus.SetOutput(&testOutput)
+
+	config, err := generateExampleConfig("test.yaml")
+
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
+
+	if config.SerialAddress != "/dev/ttyUSB0" {
+		t.Errorf("got %s instead of expected serial address /dev/ttyUSB0", config.SerialAddress)
+	}
+
+	if config.BaudRate != 115200 {
+		t.Errorf("got %d instead of expected baud rate 115200", config.BaudRate)
+	}
+
+	logOutput := testOutput.String()
+	if !strings.Contains(logOutput, "test.yaml") {
+		t.Error("logged instructions do not contain the file name test.yaml")
+	}
+
+	if !strings.Contains(logOutput, "---\\n") {
+		t.Errorf("logged instructions do not contain a yaml prefix: \n%s", logOutput)
+	}
+
+	yamlKeys := []string{"serial_address", "serial_baudrate", "paranoid", "debug", "gnupg_bin", "openssl_bin", "mysql_dsn"}
+	for _, item := range yamlKeys {
+		if !strings.Contains(logOutput, item) {
+			t.Errorf("%s missing in example log output", item)
+		}
+	}
+}
+
+func TestReadConfigNonExistingFile(t *testing.T) {
+	config, err := readConfig("nonExistant.yaml")
+
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
+
+	exampleConfig, _ := generateExampleConfig("nonExistant.yaml")
+	if config != exampleConfig {
+		t.Errorf("expected example config but got %+v", config)
+	}
+}