supportedTimeZones: add unit test for String()

supportedTimeZones_test.go

@@ -0,0 +1,36 @@
+package msgraph
+
+import (
+	"math/rand"
+	"testing"
+)
+
+func Test_supportedTimeZones_GetTimeZoneByAlias(t *testing.T) {
+	testuser := GetTestUser(t)
+	timezones, _ := testuser.getTimeZoneChoices(compileGetQueryOptions(nil))
+
+	randomTimezone := timezones.Value[rand.Intn(len(timezones.Value))]
+	_, err := timezones.GetTimeZoneByAlias(randomTimezone.Alias)
+	if err != nil {
+		t.Errorf("Cannot get timeZone with Alias %v, err: %v", randomTimezone.Alias, err)
+	}
+	_, err = timezones.GetTimeZoneByAlias("This is a non existing timezone")
+	if err == nil {
+		t.Errorf("Tried to get a non existing timezone, expected an error, but got nil")
+	}
+}
+
+func Test_supportedTimeZones_GetTimeZoneByDisplayName(t *testing.T) {
+	testuser := GetTestUser(t)
+	timezones, _ := testuser.getTimeZoneChoices(compileGetQueryOptions(nil))
+
+	randomTimezone := timezones.Value[rand.Intn(len(timezones.Value))]
+	_, err := timezones.GetTimeZoneByDisplayName(randomTimezone.DisplayName)
+	if err != nil {
+		t.Errorf("Cannot get timeZone with DisplayName %v, err: %v", randomTimezone.DisplayName, err)
+	}
+	_, err = timezones.GetTimeZoneByDisplayName("This is a non existing timezone")
+	if err == nil {
+		t.Errorf("Tried to get a non existing timezone, expected an error, but got nil")
+	}
+}