adds integration tests for sending SMS functionality, closes #135

Author: sdiakovskyi-gd

src/main/java/com/mailjet/client/MailjetClient.java

@@ -198,7 +198,7 @@ private Request.Builder getPreconfiguredRequestBuilder(MailjetRequest request) t
 
             case Bearer:
                 if (_options.getApiAccessToken() == null)
-                    throw new MailjetUnauthorizedException("To do a request to MailJet api, api key and api secret should be set");
+                    throw new MailjetUnauthorizedException("To do a request to MailJet api, api access token should be set");
 
                 builder.addHeader("Authorization", "Bearer " + _options.getApiAccessToken());
                 break;

src/test/java/com/mailjet/client/SendSmsIT.java

@@ -0,0 +1,60 @@
+package com.mailjet.client;
+
+import com.mailjet.client.errors.MailjetClientRequestException;
+import com.mailjet.client.errors.MailjetException;
+import com.mailjet.client.resource.sms.SmsSend;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+public class SendSmsIT {
+
+    @Test
+    public void sendSms_UnsupportedCountry_ThrowsMailjetException() {
+        // arrange
+        MailjetClient mailjetClient = new MailjetClient(ClientOptions
+                .builder()
+                .apiAccessToken(System.getenv("MJ_APITOKEN"))
+                .build());
+
+        String ukrainePhoneNumber = "+380507363100";
+
+        MailjetRequest mailjetRequest = new MailjetRequest(SmsSend.resource)
+                .property(SmsSend.FROM, "MJPilot")
+                .property(SmsSend.TO, ukrainePhoneNumber)
+                .property(SmsSend.TEXT, "Have a nice SMS flight with Mailjet!");
+
+        // act
+        MailjetClientRequestException requestException = Assert.assertThrows(MailjetClientRequestException.class, () -> mailjetClient.post(mailjetRequest));
+
+        // assert
+        Assert.assertEquals(400, requestException.getStatusCode());
+        Assert.assertTrue(requestException.getMessage().endsWith("\"ErrorCode\":\"sms-0002\",\"StatusCode\":400,\"ErrorMessage\":\"Unsupported country code.\",\"ErrorRelatedTo\":[\"To\"]}"));
+    }
+
+    @Test
+    @Ignore("This test will send the real sms")
+    public void sendSms_SupportedCountry_ReturnsSuccessResponse() throws MailjetException {
+        // arrange
+        MailjetClient mailjetClient = new MailjetClient(ClientOptions
+                .builder()
+                .apiAccessToken(System.getenv("MJ_APITOKEN"))
+                .build());
+
+        // to verify other countries, free services like https://receive-smss.com/ can be used
+        String germanyPhoneNumber = "+4915207831169";
+
+        MailjetRequest mailjetRequest = new MailjetRequest(SmsSend.resource)
+                .property(SmsSend.FROM, "MJPilot")
+                .property(SmsSend.TO, germanyPhoneNumber)
+                .property(SmsSend.TEXT, "Have a nice SMS flight with Mailjet!");
+
+        // act
+        MailjetResponse response = mailjetClient.post(mailjetRequest);
+
+        // assert
+        Assert.assertEquals(200, response.getStatus());
+        Assert.assertEquals("Message is being sent", response.getData().getJSONObject(0).getJSONObject("Status").getString("Description"));
+        Assert.assertEquals("Have a nice SMS flight with Mailjet!", response.getString("Text"));
+    }
+}