<p><b>@bergzand</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/12267#discussion_r325844884">tests/usbus/main.c</a>:</p>
<pre style='color:#555'>> +    /* Validate direction and content for the current state */
+    switch (req_phase) {
+        case TEST_REQ_PHASE_START_GET:
+            _validate_get_req_start(ep);
+            _handle_data(dev, ep, len);
+            break;
+        case TEST_REQ_PHASE_START_SET:
+            _validate_set_req_start(dev, ep, len);
+            break;
+        case TEST_REQ_PHASE_OUTACK:
+            _validate_out_ack(dev, ep);
+            break;
+        case TEST_REQ_PHASE_INACK:
+            _validate_in_ack(dev, ep, len);
+            break;
+        default:
</pre>
<p>And added a comment :)</p>

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