Add a few tests for ecp_tls_read_point
diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index e6baf46..ca71ff3 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -181,6 +181,18 @@
ECP read binary #6 (non-zero, OK)
ecp_read_binary:SECP192R1:"0448d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc99336ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"48d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":"6ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"01":0
+ECP tls read point #1 (zero, invalid length byte)
+ecp_tls_read_point:SECP192R1:"0200":"01":"01":"00":POLARSSL_ERR_ECP_BAD_INPUT_DATA
+
+ECP tls read point #2 (zero, OK)
+ecp_tls_read_point:SECP192R1:"0100":"01":"01":"00":0
+
+ECP tls read point #3 (non-zero, invalid length byte)
+ecp_tls_read_point:SECP192R1:"300448d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc99336ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"48d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":"6ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"01":POLARSSL_ERR_ECP_BAD_INPUT_DATA
+
+ECP tls read point #4 (non-zero, OK)
+ecp_tls_read_point:SECP192R1:"310448d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc99336ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"48d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":"6ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"01":0
+
ECP tls write-read point #1
ecp_tls_write_read_point:SECP192R1