test: Video exception responses

Author: SMadani

src/main/kotlin/com/vonage/client/kt/Video.kt

@@ -71,7 +71,7 @@ class Video(private val client: VideoClient) {
 
         fun sendDtmf(digits: String): Unit = client.sendDtmf(id, digits)
 
-        fun startCaptions(token: String, properties: CaptionsRequest.Builder.() -> Unit): UUID =
+        fun startCaptions(token: String, properties: CaptionsRequest.Builder.() -> Unit = {}): UUID =
             client.startCaptions(CaptionsRequest.builder()
                 .apply(properties).sessionId(id).token(token).build()
             ).captionsId

src/test/kotlin/com/vonage/client/kt/AbstractTest.kt

@@ -294,6 +294,7 @@ abstract class AbstractTest {
 
         assert401ApiResponseException<E>(url, requestMethod, actualCall)
         assert402ApiResponseException<E>(url, requestMethod, actualCall)
+        assert403ApiResponseException<E>(url, requestMethod, actualCall)
         assert429ApiResponseException<E>(url, requestMethod, actualCall)
     }
 
@@ -341,6 +342,14 @@ abstract class AbstractTest {
             "bf0ca0bf927b3b52e3cb03217e1a1ddf"
         )
 
+    protected inline fun <reified E: VonageApiResponseException> assert403ApiResponseException(
+        url: String, requestMethod: HttpMethod, actualCall: () -> Any): E =
+        assertApiResponseException(url, requestMethod, actualCall, 403,
+            title = "Forbidden",
+            code = "10001",
+            detail = "Invalid token format or signature."
+        )
+
     protected inline fun <reified E: VonageApiResponseException> assert429ApiResponseException(
             url: String, requestMethod: HttpMethod, actualCall: () -> Any): E =
         assertApiResponseException(url, requestMethod, actualCall, 429,