Add protocol example tests

examples/protocols/icmp_echo/example_test.py

@@ -0,0 +1,27 @@
+from __future__ import unicode_literals
+import re
+import ttfw_idf
+
+
+@ttfw_idf.idf_example_test(env_tag='Example_WIFI')
+def test_examples_icmp_echo(env, extra_data):
+
+    dut = env.get_dut('icmp_echo', 'examples/protocols/icmp_echo')
+    dut.start_app()
+
+    dut.expect('example_connect: Connected to')
+    dut.expect('esp>')
+    dut.write('ping www.espressif.com')
+    ip_re = r'\.'.join((r'\d{1,3}',) * 4)
+    ip = dut.expect(re.compile(r'64 bytes from ({}) icmp_seq=1 ttl=\d+ time=\d+ ms'.format(ip_re)))[0]
+
+    # expect at least one more (there could be lost packets)
+    dut.expect(re.compile(r'64 bytes from {} icmp_seq=[2-5] ttl=49 time='.format(ip)))
+
+    dut.expect(re.compile(r'5 packets transmitted, [2-5] received, \d{1,3}% packet loss'))
+    dut.write('')
+    dut.expect('esp>')
+
+
+if __name__ == '__main__':
+    test_examples_icmp_echo()