Diff: TESTS/unit_tests/default/main.cpp

Revision:

0:44dd95724bc2

Child:

1:80ec3fccad9e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TESTS/unit_tests/default/main.cpp	Wed Jun 14 09:27:55 2017 +0000
@@ -0,0 +1,739 @@
+#include "UbloxPPPCellularInterface.h"
+#include "mbed.h"
+#include "Callback.h"
+#include "greentea-client/test_env.h"
+#include "unity.h"
+#include "utest.h"
+#include "UDPSocket.h"
+#ifdef FEATURE_COMMON_PAL
+#include "mbed_trace.h"
+#define TRACE_GROUP "TEST"
+#else
+#define tr_debug(format, ...) debug_if(_debug_trace_on, format "\n", ## __VA_ARGS__)
+#define tr_info(format, ...)  debug_if(_debug_trace_on, format "\n", ## __VA_ARGS__)
+#define tr_warn(format, ...)  debug_if(_debug_trace_on, format "\n", ## __VA_ARGS__)
+#define tr_error(format, ...) debug_if(_debug_trace_on, format "\n", ## __VA_ARGS__)
+#endif
+
+using namespace utest::v1;
+
+#if NSAPI_PPP_AVAILABLE
+
+// IMPORTANT!!! if you make a change to the tests here you should
+// check whether the same change should be made to the tests under
+// the AT DATA driver.
+
+// ----------------------------------------------------------------
+// COMPILE-TIME MACROS
+// ----------------------------------------------------------------
+
+// These macros can be overridden with an mbed_app.json file and
+// contents of the following form:
+//
+//{
+//    "config": {
+//        "default-pin": {
+//            "value": "\"1234\""
+//        }
+//}
+//
+// See the template_mbed_app.txt in this directory for a fuller example.
+
+// Whether debug trace is on
+#ifndef MBED_CONF_APP_DEBUG_ON
+# define MBED_CONF_APP_DEBUG_ON false
+#endif
+
+// Run the SIM change tests, which require the DEFAULT_PIN
+// above to be correct for the board on which the test
+// is being run (and the SIM PIN to be disabled before tests run).
+#ifndef MBED_CONF_APP_RUN_SIM_PIN_CHANGE_TESTS
+# define MBED_CONF_APP_RUN_SIM_PIN_CHANGE_TESTS 0
+#endif
+
+#if MBED_CONF_APP_RUN_SIM_PIN_CHANGE_TESTS
+# ifndef MBED_CONF_APP_DEFAULT_PIN
+#   error "MBED_CONF_APP_DEFAULT_PIN must be defined to run the SIM tests"
+# endif
+# ifndef MBED_CONF_APP_ALT_PIN
+#   error "MBED_CONF_APP_ALT_PIN must be defined to run the SIM tests"
+# endif
+# ifndef MBED_CONF_APP_INCORRECT_PIN
+#   error "MBED_CONF_APP_INCORRECT_PIN must be defined to run the SIM tests"
+# endif
+#endif
+
+// The credentials of the SIM in the board.
+#ifndef MBED_CONF_APP_DEFAULT_PIN
+// Note: if PIN is enabled on your SIM, or you wish to run the SIM PIN change
+// tests, you must define the PIN for your SIM (see note above on using
+// mbed_app.json to do so).
+# define MBED_CONF_APP_DEFAULT_PIN "0000"
+#endif
+#ifndef MBED_CONF_APP_APN
+# define MBED_CONF_APP_APN         NULL
+#endif
+#ifndef MBED_CONF_APP_USERNAME
+# define MBED_CONF_APP_USERNAME    NULL
+#endif
+#ifndef MBED_CONF_APP_PASSWORD
+# define MBED_CONF_APP_PASSWORD    NULL
+#endif
+
+// Alternate PIN to use during pin change testing
+#ifndef MBED_CONF_APP_ALT_PIN
+# define MBED_CONF_APP_ALT_PIN    "9876"
+#endif
+
+// A PIN that is definitely incorrect
+#ifndef MBED_CONF_APP_INCORRECT_PIN
+# define MBED_CONF_APP_INCORRECT_PIN "1530"
+#endif
+
+// Servers and ports
+#ifdef MBED_CONF_APP_ECHO_SERVER
+# ifndef MBED_CONF_APP_ECHO_UDP_PORT
+#  error "MBED_CONF_APP_ECHO_UDP_PORT (the port on which your echo server echoes UDP packets) must be defined"
+# endif
+# ifndef MBED_CONF_APP_ECHO_TCP_PORT
+#  error "MBED_CONF_APP_ECHO_TCP_PORT (the port on which your echo server echoes TCP packets) must be defined"
+# endif
+#endif
+
+#ifndef MBED_CONF_APP_NTP_SERVER
+# define MBED_CONF_APP_NTP_SERVER "2.pool.ntp.org"
+#else
+# ifndef MBED_CONF_APP_NTP_PORT
+#  error "MBED_CONF_APP_NTP_PORT must be defined if MBED_CONF_APP_NTP_SERVER is defined"
+# endif
+#endif
+#ifndef MBED_CONF_APP_NTP_PORT
+# define MBED_CONF_APP_NTP_PORT 123
+#endif
+
+#ifndef MBED_CONF_APP_LOCAL_PORT
+# define MBED_CONF_APP_LOCAL_PORT 15
+#endif
+
+// UDP packet size limit for testing
+#ifndef MBED_CONF_APP_UDP_MAX_PACKET_SIZE
+# define MBED_CONF_APP_UDP_MAX_PACKET_SIZE 508
+#endif
+
+// TCP packet size limit for testing
+#ifndef MBED_CONF_APP_MBED_CONF_APP_TCP_MAX_PACKET_SIZE
+# define MBED_CONF_APP_TCP_MAX_PACKET_SIZE 1500
+#endif
+
+// The number of retries for UDP exchanges
+#define NUM_UDP_RETRIES 5
+
+// How long to wait for stuff to travel in the async tests
+#define ASYNC_TEST_WAIT_TIME 10000
+
+// ----------------------------------------------------------------
+// PRIVATE VARIABLES
+// ----------------------------------------------------------------
+
+#ifdef FEATURE_COMMON_PAL
+// Lock for debug prints
+static Mutex mtx;
+#endif
+
+// An instance of the cellular interface
+static UbloxPPPCellularInterface *interface = new UbloxPPPCellularInterface(MDMTXD,
+                                                                            MDMRXD,
+                                                                            MBED_CONF_UBLOX_CELL_BAUD_RATE,
+                                                                            MBED_CONF_APP_DEBUG_ON);
+
+// Connection flag
+static bool connection_has_gone_down = false;
+
+static const char send_data[] =  "_____0000:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0100:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0200:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0300:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0400:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0500:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0600:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0700:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0800:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____0900:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1000:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1100:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1200:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1300:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1400:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1500:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1600:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1700:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1800:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____1900:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789"
+                                 "_____2000:0123456789012345678901234567890123456789"
+                                 "01234567890123456789012345678901234567890123456789";
+
+// ----------------------------------------------------------------
+// PRIVATE FUNCTIONS
+// ----------------------------------------------------------------
+
+#ifdef FEATURE_COMMON_PAL
+// Locks for debug prints
+static void lock()
+{
+    mtx.lock();
+}
+
+static void unlock()
+{
+    mtx.unlock();
+}
+#endif
+
+// Callback in case the connection goes down
+void connection_down_cb(nsapi_error_t err)
+{
+    connection_has_gone_down = true;
+}
+
+#ifdef MBED_CONF_APP_ECHO_SERVER
+// Make sure that size is greater than 0 and no more than limit,
+// useful since, when moduloing a very large number number,
+// compilers sometimes screw up and produce a small *negative*
+// number.  Who knew?  For example, GCC decided that
+// 492318453 (0x1d582ef5) modulo 508 was -47 (0xffffffd1).
+static int fix (int size, int limit)
+{
+    if (size <= 0) {
+        size = limit / 2; // better than 1
+    } else if (size > limit) {
+        size = limit;
+    }
+    return size;
+}
+
+// Do a UDP socket echo test to a given host of a given packet size
+static void do_udp_echo(UDPSocket *sock, SocketAddress *host_address, int size)
+{
+    bool success = false;
+    void * recv_data = malloc (size);
+    TEST_ASSERT(recv_data != NULL);
+
+    // Retry this a few times, don't want to fail due to a flaky link
+    for (int x = 0; !success && (x < NUM_UDP_RETRIES); x++) {
+        tr_debug("Echo testing UDP packet size %d byte(s), try %d.", size, x + 1);
+        if ((sock->sendto(*host_address, (void*) send_data, size) == size) &&
+            (sock->recvfrom(host_address, recv_data, size) == size)) {
+            TEST_ASSERT (memcmp(send_data, recv_data, size) == 0);
+            success = true;
+        }
+    }
+    TEST_ASSERT (success);
+    TEST_ASSERT(!connection_has_gone_down);
+
+    free (recv_data);
+}
+
+// Send an entire TCP data buffer until done
+static int sendAll(TCPSocket *sock, const char *data, int size)
+{
+    int x;
+    int count = 0;
+    Timer timer;
+
+    timer.start();
+    while ((count < size) && (timer.read_ms() < ASYNC_TEST_WAIT_TIME)) {
+        x = sock->send(data + count, size - count);
+        if (x > 0) {
+            count += x;
+            tr_debug("%d byte(s) sent, %d left to send.", count, size - count);
+        }
+        wait_ms(10);
+    }
+    timer.stop();
+
+    return count;
+}
+
+// The asynchronous callback
+static void async_cb(bool *callback_triggered)
+{
+
+    TEST_ASSERT (callback_triggered != NULL);
+    *callback_triggered = true;
+}
+
+// Do a TCP echo using the asynchronous interface
+static void do_tcp_echo_async(TCPSocket *sock, int size, bool *callback_triggered)
+{
+    void * recv_data = malloc (size);
+    int recv_size = 0;
+    int x, y;
+    Timer timer;
+    TEST_ASSERT(recv_data != NULL);
+
+    *callback_triggered = false;
+    tr_debug("Echo testing TCP packet size %d byte(s) async.", size);
+    TEST_ASSERT (sendAll(sock, send_data, size) == size);
+    // Wait for all the echoed data to arrive
+    timer.start();
+    while ((recv_size < size) && (timer.read_ms() < ASYNC_TEST_WAIT_TIME)) {
+        if (*callback_triggered) {
+            *callback_triggered = false;
+            x = sock->recv((char *) recv_data + recv_size, size);
+            // IMPORTANT: this is different to the version in the AT DATA tests
+            // In the AT DATA case we know that the only reason the callback
+            // will be triggered is if there is received data.  In the case
+            // of calling the LWIP implementation other things can also trigger
+            // it, so don't rely on there being any bytes to receive.
+            if (x > 0) {
+                recv_size += x;
+                tr_debug("%d byte(s) echoed back so far.", recv_size);
+            }
+        }
+        wait_ms(10);
+    }
+    TEST_ASSERT(recv_size == size);
+    y = memcmp(send_data, recv_data, size);
+    if (y != 0) {
+        tr_debug("Sent %d, |%*.*s|", size, size, size, send_data);
+        tr_debug("Rcvd %d, |%*.*s|", size, size, size, (char *) recv_data);
+        TEST_ASSERT(false);
+    }
+    timer.stop();
+
+    TEST_ASSERT(!connection_has_gone_down);
+
+    free (recv_data);
+}
+#endif
+
+// Get NTP time
+static void do_ntp(UbloxPPPCellularInterface *interface)
+{
+    char ntp_values[48] = { 0 };
+    time_t timestamp = 0;
+    struct tm *localTime;
+    char timeString[25];
+    time_t TIME1970 = 2208988800U;
+    int len;
+    bool comms_done = false;
+
+    ntp_values[0] = '\x1b';
+
+    // Retry this a few times, don't want to fail due to a flaky link
+    for (unsigned int x = 0; !comms_done && (x < NUM_UDP_RETRIES); x++) {
+        sock->sendto(ntp_address, (void*) ntp_values, sizeof(ntp_values));
+        len = sock->recvfrom(&ntp_address, (void*) ntp_values, sizeof(ntp_values));
+        if (len > 0) {
+            comms_done = true;
+        }
+    }
+    TEST_ASSERT (comms_done);
+
+    tr_debug("UDP: %d byte(s) returned by NTP server.", len);
+    if (len >= 43) {
+        timestamp |= ((int) *(ntp_values + 40)) << 24;
+        timestamp |= ((int) *(ntp_values + 41)) << 16;
+        timestamp |= ((int) *(ntp_values + 42)) << 8;
+        timestamp |= ((int) *(ntp_values + 43));
+        timestamp -= TIME1970;
+        srand (timestamp);
+        tr_debug("srand() called");
+        localTime = localtime(&timestamp);
+        if (localTime) {
+            if (strftime(timeString, sizeof(timeString), "%a %b %d %H:%M:%S %Y", localTime) > 0) {
+                printf("NTP timestamp is %s.\n", timeString);
+            }
+        }
+    }
+}
+
+// Use a connection, checking that it is good
+static void use_connection(UbloxPPPCellularInterface *interface)
+{
+    const char * ip_address = interface->get_ip_address();
+    const char * net_mask = interface->get_netmask();
+    const char * gateway = interface->get_gateway();
+
+    TEST_ASSERT(interface->is_connected());
+
+    TEST_ASSERT(ip_address != NULL);
+    tr_debug ("IP address %s.", ip_address);
+    TEST_ASSERT(net_mask != NULL);
+    tr_debug ("Net mask %s.", net_mask);
+    TEST_ASSERT(gateway != NULL);
+    tr_debug ("Gateway %s.", gateway);
+
+    do_ntp(interface);
+    TEST_ASSERT(!connection_has_gone_down);
+}
+
+// Drop a connection and check that it has dropped
+static void drop_connection(UbloxPPPCellularInterface *interface)
+{
+    TEST_ASSERT(interface->disconnect() == 0);
+    TEST_ASSERT(connection_has_gone_down);
+    connection_has_gone_down = false;
+    TEST_ASSERT(!interface->is_connected());
+}
+
+// ----------------------------------------------------------------
+// TESTS
+// ----------------------------------------------------------------
+
+// Call srand() using the NTP server
+void test_set_randomise() {
+    UDPSocket sock;
+    SocketAddress host_address;
+
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    do_ntp(interface);
+    TEST_ASSERT(!connection_has_gone_down);
+    drop_connection(interface);
+}
+
+#ifdef MBED_CONF_APP_ECHO_SERVER
+// Test UDP data exchange
+void  test_udp_echo() {
+    UDPSocket sock;
+    SocketAddress host_address;
+    int x;
+    int size;
+
+    interface->deinit();
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+
+    TEST_ASSERT(interface->gethostbyname(MBED_CONF_APP_ECHO_SERVER, &host_address) == 0);
+    host_address.set_port(MBED_CONF_APP_ECHO_UDP_PORT);
+
+    tr_debug("UDP: Server %s address: %s on port %d.", MBED_CONF_APP_ECHO_SERVER,
+             host_address.get_ip_address(), host_address.get_port());
+
+    TEST_ASSERT(sock.open(interface) == 0)
+
+    sock.set_timeout(10000);
+
+    // Test min, max, and some random sizes in-between
+    do_udp_echo(&sock, &host_address, 1);
+    do_udp_echo(&sock, &host_address, MBED_CONF_APP_UDP_MAX_PACKET_SIZE);
+    for (x = 0; x < 10; x++) {
+        size = (rand() % MBED_CONF_APP_UDP_MAX_PACKET_SIZE) + 1;
+        size = fix(size, MBED_CONF_APP_UDP_MAX_PACKET_SIZE);
+        do_udp_echo(&sock, &host_address, size);
+    }
+
+    sock.close();
+
+    drop_connection(interface);
+
+    tr_debug("%d UDP packets of size up to %d byte(s) echoed successfully.", x,
+             MBED_CONF_APP_UDP_MAX_PACKET_SIZE);
+}
+
+// Test TCP data exchange via the asynchronous sigio() mechanism
+void test_tcp_echo_async() {
+    TCPSocket sock;
+    SocketAddress host_address;
+    bool callback_triggered = false;
+    int x;
+    int size;
+
+    interface->deinit();
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+
+    TEST_ASSERT(interface->gethostbyname(MBED_CONF_APP_ECHO_SERVER, &host_address) == 0);
+    host_address.set_port(MBED_CONF_APP_ECHO_TCP_PORT);
+
+    tr_debug("TCP: Server %s address: %s on port %d.", MBED_CONF_APP_ECHO_SERVER,
+             host_address.get_ip_address(), host_address.get_port());
+
+    TEST_ASSERT(sock.open(interface) == 0)
+
+    // Set up the async callback and set the timeout to zero
+    sock.sigio(callback(async_cb, &callback_triggered));
+    sock.set_timeout(0);
+
+    TEST_ASSERT(sock.connect(host_address) == 0);
+    // Test min, max, and some random sizes in-between
+    do_tcp_echo_async(&sock, 1, &callback_triggered);
+    do_tcp_echo_async(&sock, MBED_CONF_APP_TCP_MAX_PACKET_SIZE, &callback_triggered);
+    for (x = 0; x < 10; x++) {
+        size = (rand() % MBED_CONF_APP_TCP_MAX_PACKET_SIZE) + 1;
+        size = fix(size, MBED_CONF_APP_TCP_MAX_PACKET_SIZE);
+        do_tcp_echo_async(&sock, size, &callback_triggered);
+    }
+
+    sock.close();
+
+    drop_connection(interface);
+
+    tr_debug("%d TCP packets of size up to %d byte(s) echoed asynchronously and successfully.",
+             x, MBED_CONF_APP_TCP_MAX_PACKET_SIZE);
+}
+#endif
+
+// Connect with credentials included in the connect request
+void test_connect_credentials() {
+
+    interface->deinit();
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+}
+
+// Test with credentials preset
+void test_connect_preset_credentials() {
+
+    interface->deinit();
+    TEST_ASSERT(interface->init(MBED_CONF_APP_DEFAULT_PIN));
+    interface->set_credentials(MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME,
+                               MBED_CONF_APP_PASSWORD);
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+}
+
+// Test adding and using a SIM pin, then removing it, using the pending
+// mechanism where the change doesn't occur until connect() is called
+void test_check_sim_pin_pending() {
+
+    interface->deinit();
+
+    // Enable PIN checking (which will use the current PIN)
+    // and also flag that the PIN should be changed to MBED_CONF_APP_ALT_PIN,
+    // then try connecting
+    interface->sim_pin_check_enable(true);
+    interface->change_sim_pin(MBED_CONF_APP_ALT_PIN);
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+    interface->deinit();
+
+    // Now change the PIN back to what it was before
+    interface->change_sim_pin(MBED_CONF_APP_DEFAULT_PIN);
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_ALT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+    interface->deinit();
+
+    // Check that it was changed back, and this time
+    // use the other way of entering the PIN
+    interface->set_sim_pin(MBED_CONF_APP_DEFAULT_PIN);
+    TEST_ASSERT(interface->connect(NULL, MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME,
+                                   MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+    interface->deinit();
+
+    // Remove PIN checking again and check that it no
+    // longer matters what the PIN is
+    interface->sim_pin_check_enable(false);
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+    interface->deinit();
+    TEST_ASSERT(interface->init(NULL));
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_INCORRECT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+
+    // Put the SIM pin back to the correct value for any subsequent tests
+    interface->set_sim_pin(MBED_CONF_APP_DEFAULT_PIN);
+}
+
+// Test adding and using a SIM pin, then removing it, using the immediate
+// mechanism
+void test_check_sim_pin_immediate() {
+
+    interface->deinit();
+    interface->connection_status_cb(callback(connection_down_cb));
+
+    // Enable PIN checking (which will use the current PIN), change
+    // the PIN to MBED_CONF_APP_ALT_PIN, then try connecting after powering on and
+    // off the modem
+    interface->set_sim_pin_check(true, true, MBED_CONF_APP_DEFAULT_PIN);
+    interface->set_new_sim_pin(MBED_CONF_APP_ALT_PIN, true);
+    interface->deinit();
+    TEST_ASSERT(interface->init(NULL));
+    TEST_ASSERT(interface->connect(MBED_CONF_APP_ALT_PIN, MBED_CONF_APP_APN,
+                                   MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+
+    interface->connection_status_cb(callback(connection_down_cb));
+
+    // Now change the PIN back to what it was before
+    interface->set_new_sim_pin(MBED_CONF_APP_DEFAULT_PIN, true);
+    interface->deinit();
+    interface->set_sim_pin(MBED_CONF_APP_DEFAULT_PIN);
+    TEST_ASSERT(interface->init(NULL));
+    TEST_ASSERT(interface->connect(NULL, MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME,
+                                   MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+
+    interface->connection_status_cb(callback(connection_down_cb));
+
+    // Remove PIN checking again and check that it no
+    // longer matters what the PIN is
+    interface->set_sim_pin_check(false, true);
+    interface->deinit();
+    TEST_ASSERT(interface->init(MBED_CONF_APP_INCORRECT_PIN));
+    TEST_ASSERT(interface->connect(NULL, MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME,
+                                   MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(interface);
+    drop_connection(interface);
+
+    // Put the SIM pin back to the correct value for any subsequent tests
+    interface->set_sim_pin(MBED_CONF_APP_DEFAULT_PIN);
+}
+
+// Test being able to connect with a local instance of the driver
+// NOTE: since this local instance will fiddle with bits of HW that the
+// static instance thought it owned, the static instance will no longer
+// work afterwards, hence this must be run as the last test in the list
+void test_connect_local_instance_last_test() {
+
+    UbloxPPPCellularInterface *pLocalInterface = NULL;
+
+    pLocalInterface = new UbloxPPPCellularInterface(MDMTXD, MDMRXD,
+                                                    MBED_CONF_UBLOX_CELL_BAUD_RATE,
+                                                    MBED_CONF_APP_DEBUG_ON);
+    pLocalInterface->connection_status_cb(callback(connection_down_cb));
+
+    TEST_ASSERT(pLocalInterface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                         MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(pLocalInterface);
+    drop_connection(pLocalInterface);
+    delete pLocalInterface;
+
+    pLocalInterface = new UbloxPPPCellularInterface(MDMTXD, MDMRXD,
+                                                    MBED_CONF_UBLOX_CELL_BAUD_RATE,
+                                                    MBED_CONF_APP_DEBUG_ON);
+    pLocalInterface->connection_status_cb(callback(connection_down_cb));
+
+    TEST_ASSERT(pLocalInterface->connect(MBED_CONF_APP_DEFAULT_PIN, MBED_CONF_APP_APN,
+                                         MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD) == 0);
+    use_connection(pLocalInterface);
+    drop_connection(pLocalInterface);
+    delete pLocalInterface;
+}
+
+// ----------------------------------------------------------------
+// TEST ENVIRONMENT
+// ----------------------------------------------------------------
+
+// Setup the test environment
+utest::v1::status_t test_setup(const size_t number_of_cases) {
+    // Setup Greentea with a timeout
+    GREENTEA_SETUP(600, "default_auto");
+    return verbose_test_setup_handler(number_of_cases);
+}
+
+// IMPORTANT!!! if you make a change to the tests here you should
+// check whether the same change should be made to the tests under
+// the AT DATA driver.
+
+// Test cases
+Case cases[] = {
+    Case("Set randomise", test_set_randomise),
+#ifdef MBED_CONF_APP_ECHO_SERVER
+    Case("UDP echo test", test_udp_echo),
+# if MBED_CONF_LWIP_TCP_ENABLED
+    Case("TCP async echo test", test_tcp_echo_async),
+# endif
+#endif
+    Case("Connect with credentials", test_connect_credentials),
+    Case("Connect with preset credentials", test_connect_preset_credentials),
+#if MBED_CONF_APP_RUN_SIM_PIN_CHANGE_TESTS
+    Case("Check SIM pin, pending", test_check_sim_pin_pending),
+    Case("Check SIM pin, immediate", test_check_sim_pin_immediate),
+#endif
+#ifndef TARGET_UBLOX_C027 // Not enough RAM on little 'ole C027 for this
+    Case("Connect using local instance, must be last test", test_connect_local_instance_last_test)
+#endif
+};
+
+Specification specification(test_setup, cases);
+
+// ----------------------------------------------------------------
+// MAIN
+// ----------------------------------------------------------------
+
+int main() {
+
+#ifdef FEATURE_COMMON_PAL
+    mbed_trace_init();
+
+    mbed_trace_mutex_wait_function_set(lock);
+    mbed_trace_mutex_release_function_set(unlock);
+
+    interface->connection_status_cb(callback(connection_down_cb));
+#endif
+    
+    // Run tests
+    return !Harness::run(specification);
+}
+
+#else
+
+// This looks a bit peculiar.  These tests should only be compiled if LWIP is included and PPP support is enabled.
+// The way the "mbed test" command, which parses these files, does its filtering is by looking for the pattern:
+//
+// #ifndef THING
+// #error [NOT_SUPPORTED] this test can only be used if THING is defined
+// endif
+//
+// So if THING is not defined, this test will not even be compiled. However, the only compilation switch which
+// is visible here for PPP being enabled or not is NSAPI_PPP_AVAILABLE, which is 0 if PPP is not enabled (the default)
+// or 1 if PPP is enabled.  There is NO visible compilation switch which is or isn't _defined_ when PPP is or
+// isn't enabled.
+//
+// Instead, here is a dummy test body which clearly states that these tests are irrelevant 'cos there's no PPP.
+
+void dummy() {
+}
+utest::v1::status_t test_setup(const size_t number_of_cases) {
+    GREENTEA_SETUP(10, "default_auto");
+    return verbose_test_setup_handler(number_of_cases);
+}
+Case cases[] = {
+    Case("No PPP, no tests to run", dummy)
+};
+Specification specification(test_setup, cases);
+
+int main() {
+    return !Harness::run(specification);;
+}
+
+#endif
+
+// End Of File
+