restructure tests and build system

1 files changed, 876 insertions, 0 deletions

diff --git a/src/lib/test_taler_exchange_wirewatch.c b/src/lib/test_taler_exchange_wirewatch.c
new file mode 100644
index 000000000..9c089a54d
--- /dev/null
+++ b/src/lib/test_taler_exchange_wirewatch.c
@@ -0,0 +1,876 @@
+/*
+  This file is part of TALER
+  (C) 2016, 2017, 2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file exchange/test_taler_exchange_wirewatch.c
+ * @brief Tests for taler-exchange-wirewatch and taler-exchange-aggregator logic;
+ *        Performs an invalid wire transfer to the exchange, and then checks that
+ *        wirewatch immediately sends the money back.
+ *        Then performs a valid wire transfer, waits for the reserve to expire,
+ *        and then checks that the aggregator sends the money back.
+ * @author Christian Grothoff <christian@grothoff.org>
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include <gnunet/gnunet_json_lib.h>
+#include <gnunet/gnunet_pq_lib.h>
+#include "taler_json_lib.h"
+#include <microhttpd.h>
+#include "taler_fakebank_lib.h"
+
+
+/**
+ * Commands for the interpreter.
+ */
+enum OpCode
+{
+
+  /**
+   * Terminate testcase with 'skipped' result.
+   */
+  OPCODE_TERMINATE_SKIP,
+
+  /**
+   * Run taler-exchange-aggregator.
+   */
+  OPCODE_RUN_AGGREGATOR,
+
+  /**
+   * Expect that we have exhaustively gone over all transactions.
+   */
+  OPCODE_RUN_WIREWATCH,
+
+  /**
+   * Send money from bank to exchange.
+   */
+  OPCODE_RUN_TRANSFER,
+
+  /**
+   * Wait a certain amount of time.
+   */
+  OPCODE_WAIT,
+
+  /**
+   * Expect that we have received the specified transfer.
+   */
+  OPCODE_EXPECT_TRANSFER,
+
+  /**
+   * Expect that we have 'expected' all wire transfers.
+   */
+  OPCODE_EXPECT_TRANSFERS_EMPTY,
+
+  /**
+   * Finish testcase with success.
+   */
+  OPCODE_TERMINATE_SUCCESS
+};
+
+
+/**
+ * Command state for the interpreter.
+ */
+struct Command
+{
+
+  /**
+   * What instruction should we run?
+   */
+  enum OpCode opcode;
+
+  /**
+   * Human-readable label for the command.
+   */
+  const char *label;
+
+  union
+  {
+
+    /**
+     * If @e opcode is #OPCODE_EXPECT_TRANSFER, this
+     * specifies which transaction we expected.  Note that
+     * the WTID will be set, not checked!
+     */
+    struct
+    {
+
+      /**
+       * Amount to be transferred.
+       */
+      const char *amount;
+
+      /**
+       * Account to debit.
+       */
+      uint64_t debit_account;
+
+      /**
+       * Account to credit.
+       */
+      uint64_t credit_account;
+
+      /**
+       * Expected base URL for the exchange.
+       */
+      const char *exchange_base_url;
+
+      /**
+       * Subject of the transfer, set by the command.
+       */
+      struct TALER_WireTransferIdentifierRawP wtid;
+
+    } expect_transfer;
+
+
+    /**
+     * If @e opcode is #OPCODE_RUN_TRANSFER, this
+     * specifies which transaction the bank should do.
+     */
+    struct
+    {
+
+      /**
+       * Amount to be transferred.
+       */
+      const char *amount;
+
+      /**
+       * Account to debit.
+       */
+      uint64_t debit_account;
+
+      /**
+       * Account to credit.
+       */
+      uint64_t credit_account;
+
+      /**
+       * Subject of the transfer, set by the command.
+       */
+      const char *subject;
+
+      /**
+       * Serial ID of the wire transfer as assigned by the bank.
+       */
+      uint64_t serial_id;
+
+    } run_transfer;
+
+    struct
+    {
+
+      /**
+       * The handle for the aggregator process that we are testing.
+       */
+      struct GNUNET_OS_Process *aggregator_proc;
+
+      /**
+       * ID of task called whenever we get a SIGCHILD.
+       */
+      struct GNUNET_SCHEDULER_Task *child_death_task;
+
+    } aggregator;
+
+    struct
+    {
+
+      /**
+       * The handle for the wirewatch process that we are testing.
+       */
+      struct GNUNET_OS_Process *wirewatch_proc;
+
+      /**
+       * ID of task called whenever we get a SIGCHILD.
+       */
+      struct GNUNET_SCHEDULER_Task *child_death_task;
+
+    } wirewatch;
+
+    /**
+     * How long should we wait if the opcode is #OPCODE_WAIT.
+     */
+    struct GNUNET_TIME_Relative wait_delay;
+
+  } details;
+
+};
+
+
+/**
+ * State of the interpreter.
+ */
+struct State
+{
+  /**
+   * Array of commands to run.
+   */
+  struct Command*commands;
+
+  /**
+   * Offset of the next command to be run.
+   */
+  unsigned int ioff;
+};
+
+
+/**
+ * Pipe used to communicate child death via signal.
+ */
+static struct GNUNET_DISK_PipeHandle *sigpipe;
+
+/**
+ * ID of task called whenever we time out.
+ */
+static struct GNUNET_SCHEDULER_Task *timeout_task;
+
+/**
+ * Return value from main().
+ */
+static int result;
+
+/**
+ * Name of the configuration file to use.
+ */
+static char *config_filename;
+
+/**
+ * Task running the interpreter().
+ */
+static struct GNUNET_SCHEDULER_Task *int_task;
+
+/**
+ * Handle for our fake bank.
+ */
+static struct TALER_FAKEBANK_Handle *fb;
+
+
+/**
+ * Interprets the commands from the test program.
+ *
+ * @param cls the `struct State` of the interpreter
+ */
+static void
+interpreter (void *cls);
+
+
+/**
+ * Advance the IP and run the next command.
+ *
+ * @param state interpreter to advance.
+ */
+static void
+next_command (struct State *state)
+{
+  GNUNET_assert (NULL == int_task);
+  state->ioff++;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Advancing to command %s\n",
+              state->commands[state->ioff].label);
+  int_task = GNUNET_SCHEDULER_add_now (&interpreter,
+                                       state);
+}
+
+
+/**
+ * Fail the testcase at the current command.
+ */
+static void
+fail (struct Command *cmd)
+{
+  GNUNET_assert (NULL == int_task);
+  fprintf (stderr,
+           "Testcase failed at command `%s'\n",
+           cmd->label);
+  result = 2;
+  GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Task triggered whenever we are to shutdown.
+ *
+ * @param cls closure, NULL if we need to self-restart
+ */
+static void
+timeout_action (void *cls)
+{
+  timeout_task = NULL;
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+              "Test failed: timeout\n");
+  result = 2;
+  GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Task triggered whenever we are to shutdown.
+ *
+ * @param cls our `struct State`
+ */
+static void
+shutdown_action (void *cls)
+{
+  struct State *state = cls;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Running shutdown\n");
+  if (NULL != timeout_task)
+  {
+    GNUNET_SCHEDULER_cancel (timeout_task);
+    timeout_task = NULL;
+  }
+  if (NULL != int_task)
+  {
+    GNUNET_SCHEDULER_cancel (int_task);
+    int_task = NULL;
+  }
+  if (NULL != fb)
+  {
+    TALER_FAKEBANK_stop (fb);
+    fb = NULL;
+  }
+  for (unsigned int i = 0; i<=state->ioff; i++)
+  {
+    struct Command *cmd = &state->commands[i];
+
+    switch (cmd->opcode)
+    {
+    case OPCODE_TERMINATE_SKIP:
+      break;
+    case OPCODE_RUN_AGGREGATOR:
+      if (NULL != cmd->details.aggregator.child_death_task)
+      {
+        GNUNET_SCHEDULER_cancel (cmd->details.aggregator.child_death_task);
+        cmd->details.aggregator.child_death_task = NULL;
+      }
+      if (NULL != cmd->details.aggregator.aggregator_proc)
+      {
+        GNUNET_break (0 == GNUNET_OS_process_kill (
+                        cmd->details.aggregator.aggregator_proc,
+                        SIGKILL));
+        GNUNET_OS_process_wait (cmd->details.aggregator.aggregator_proc);
+        GNUNET_OS_process_destroy (cmd->details.aggregator.aggregator_proc);
+        cmd->details.aggregator.aggregator_proc = NULL;
+      }
+      break;
+    case OPCODE_RUN_WIREWATCH:
+      if (NULL != cmd->details.wirewatch.child_death_task)
+      {
+        GNUNET_SCHEDULER_cancel (cmd->details.wirewatch.child_death_task);
+        cmd->details.wirewatch.child_death_task = NULL;
+      }
+      if (NULL != cmd->details.wirewatch.wirewatch_proc)
+      {
+        GNUNET_break (0 == GNUNET_OS_process_kill (
+                        cmd->details.wirewatch.wirewatch_proc,
+                        SIGKILL));
+        GNUNET_OS_process_wait (cmd->details.wirewatch.wirewatch_proc);
+        GNUNET_OS_process_destroy (cmd->details.wirewatch.wirewatch_proc);
+        cmd->details.wirewatch.wirewatch_proc = NULL;
+      }
+      break;
+    case OPCODE_RUN_TRANSFER:
+      break;
+    case OPCODE_WAIT:
+      break;
+    case OPCODE_EXPECT_TRANSFER:
+      break;
+    case OPCODE_EXPECT_TRANSFERS_EMPTY:
+      break;
+    case OPCODE_TERMINATE_SUCCESS:
+      break;
+    }
+  }
+}
+
+
+/**
+ * Task triggered whenever we receive a SIGCHLD (child
+ * process died).
+ *
+ * @param cls our `struct State`
+ */
+static void
+maint_child_death (void *cls)
+{
+  struct State *state = cls;
+  const struct GNUNET_DISK_FileHandle *pr;
+  struct Command *cmd = &state->commands[state->ioff];
+  char c[16];
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Child process died for command %s\n",
+              cmd->label);
+  pr = GNUNET_DISK_pipe_handle (sigpipe,
+                                GNUNET_DISK_PIPE_END_READ);
+  GNUNET_break (0 < GNUNET_DISK_file_read (pr,
+                                           &c,
+                                           sizeof (c)));
+  switch (cmd->opcode)
+  {
+  case OPCODE_RUN_AGGREGATOR:
+    GNUNET_assert (NULL != cmd->details.aggregator.child_death_task);
+    cmd->details.aggregator.child_death_task = NULL;
+    GNUNET_OS_process_wait (cmd->details.aggregator.aggregator_proc);
+    GNUNET_OS_process_destroy (cmd->details.aggregator.aggregator_proc);
+    cmd->details.aggregator.aggregator_proc = NULL;
+    break;
+  case OPCODE_RUN_WIREWATCH:
+    GNUNET_assert (NULL != cmd->details.wirewatch.child_death_task);
+    cmd->details.wirewatch.child_death_task = NULL;
+    GNUNET_OS_process_wait (cmd->details.wirewatch.wirewatch_proc);
+    GNUNET_OS_process_destroy (cmd->details.wirewatch.wirewatch_proc);
+    cmd->details.wirewatch.wirewatch_proc = NULL;
+    break;
+  default:
+    fail (cmd);
+    return;
+  }
+  next_command (state);
+}
+
+
+/**
+ * Interprets the commands from the test program.
+ *
+ * @param cls the `struct State` of the interpreter
+ */
+static void
+interpreter (void *cls)
+{
+  struct State *state = cls;
+  struct Command *cmd = &state->commands[state->ioff];
+
+  GNUNET_assert (NULL != int_task);
+  int_task = NULL;
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Running command %u (%s)\n",
+              state->ioff,
+              cmd->label);
+  switch (cmd->opcode)
+  {
+  case OPCODE_TERMINATE_SKIP:
+    /* return skip: test not finished, but did not fail either */
+    result = 77;
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  case OPCODE_RUN_AGGREGATOR:
+    cmd->details.aggregator.child_death_task =
+      GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+                                      GNUNET_DISK_pipe_handle (sigpipe,
+                                                               GNUNET_DISK_PIPE_END_READ),
+                                      &maint_child_death,
+                                      state);
+    cmd->details.aggregator.aggregator_proc
+      = GNUNET_OS_start_process (GNUNET_NO,
+                                 GNUNET_OS_INHERIT_STD_ALL,
+                                 NULL, NULL, NULL,
+                                 "taler-exchange-aggregator",
+                                 "taler-exchange-aggregator",
+                                 "-c", config_filename,
+                                 "-t", /* enable temporary tables */
+                                 NULL);
+    if (NULL == cmd->details.aggregator.aggregator_proc)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  "Failed to start taler-exchange-aggregator. Check $PATH.\n");
+      GNUNET_break (0);
+      fail (cmd);
+      return;
+    }
+    return;
+  case OPCODE_RUN_WIREWATCH:
+    cmd->details.wirewatch.child_death_task =
+      GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+                                      GNUNET_DISK_pipe_handle (sigpipe,
+                                                               GNUNET_DISK_PIPE_END_READ),
+                                      &maint_child_death,
+                                      state);
+    cmd->details.wirewatch.wirewatch_proc
+      = GNUNET_OS_start_process (GNUNET_NO,
+                                 GNUNET_OS_INHERIT_STD_ALL,
+                                 NULL, NULL, NULL,
+                                 "taler-exchange-wirewatch",
+                                 "taler-exchange-wirewatch",
+                                 "-c", config_filename,
+                                 "-T", /* run in test mode, exit instead of looping */
+                                 NULL);
+    if (NULL == cmd->details.wirewatch.wirewatch_proc)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  "Failed to start taler-exchange-wirewatch. Check $PATH.\n");
+      GNUNET_break (0);
+      fail (cmd);
+      return;
+    }
+    return;
+  case OPCODE_RUN_TRANSFER:
+    {
+      struct TALER_Amount amount;
+
+      if (GNUNET_OK !=
+          TALER_string_to_amount (cmd->details.run_transfer.amount,
+                                  &amount))
+      {
+        GNUNET_break (0);
+        fail (cmd);
+        return;
+      }
+      GNUNET_assert (NULL != cmd->details.run_transfer.subject);
+      cmd->details.run_transfer.serial_id
+        = TALER_FAKEBANK_make_transfer (fb,
+                                        cmd->details.run_transfer.debit_account,
+                                        cmd->details.run_transfer.credit_account,
+                                        &amount,
+                                        cmd->details.run_transfer.subject,
+                                        "https://exchange.taler.net/");
+      next_command (state);
+      return;
+    }
+  case OPCODE_WAIT:
+    state->ioff++;
+    GNUNET_assert (NULL == int_task);
+    int_task = GNUNET_SCHEDULER_add_delayed (cmd->details.wait_delay,
+                                             &interpreter,
+                                             state);
+    return;
+  case OPCODE_EXPECT_TRANSFER:
+    {
+      struct TALER_Amount want_amount;
+
+      if (GNUNET_OK !=
+          TALER_string_to_amount (cmd->details.expect_transfer.amount,
+                                  &want_amount))
+      {
+        GNUNET_break (0);
+        fail (cmd);
+        return;
+      }
+      if (GNUNET_OK !=
+          TALER_FAKEBANK_check_debit (fb,
+                                      &want_amount,
+                                      cmd->details.expect_transfer.debit_account,
+                                      cmd->details.expect_transfer.
+                                      credit_account,
+                                      cmd->details.expect_transfer.
+                                      exchange_base_url,
+                                      &cmd->details.expect_transfer.wtid))
+      {
+        fail (cmd);
+        return;
+      }
+      next_command (state);
+      return;
+    }
+  case OPCODE_EXPECT_TRANSFERS_EMPTY:
+    if (GNUNET_OK != TALER_FAKEBANK_check_empty (fb))
+    {
+      fail (cmd);
+      return;
+    }
+    next_command (state);
+    return;
+  case OPCODE_TERMINATE_SUCCESS:
+    result = 0;
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  }
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure with configuration
+ */
+static void
+run (void *cls)
+{
+  static struct Command commands[] = {
+    /* test running with empty DB */
+    {
+      .opcode = OPCODE_EXPECT_TRANSFERS_EMPTY,
+      .label = "expect-empty-transactions-on-start"
+    },
+    {
+      .opcode = OPCODE_RUN_AGGREGATOR,
+      .label = "run-aggregator-on-empty"
+    },
+    {
+      .opcode = OPCODE_RUN_WIREWATCH,
+      .label = "run-wirewatch-on-empty"
+    },
+    {
+      .opcode = OPCODE_EXPECT_TRANSFERS_EMPTY,
+      .label = "expect-empty-transactions-after-dry-run"
+    },
+    /* fill exchange's reserve at bank */
+    {
+      .opcode = OPCODE_RUN_TRANSFER,
+      .label = "run-transfer-good-to-exchange",
+      .details.run_transfer.debit_account = 4,
+      .details.run_transfer.credit_account = 3,
+      .details.run_transfer.subject =
+        "SRB8VQHNTNJWSSG7BXT24Z063ZSXN7T0MHCQCBAFC1V17BZH10D0",
+      .details.run_transfer.amount = "EUR:5.00"
+    },
+    /* creates reserve */
+    {
+      .opcode = OPCODE_RUN_WIREWATCH,
+      .label = "run-wirewatch-on-good-transfer"
+    },
+    /* clear first transfer from DLL */
+    {
+      .opcode = OPCODE_EXPECT_TRANSFER,
+      .label = "clear-good-transfer-to-exchange",
+      .details.expect_transfer.debit_account = 4,
+      .details.expect_transfer.credit_account = 3,
+      .details.expect_transfer.exchange_base_url =
+        "https://exchange.taler.net/",
+      .details.expect_transfer.amount = "EUR:5.00"
+    },
+    /* should do NOTHING, it is too early... */
+    {
+      .opcode = OPCODE_RUN_AGGREGATOR,
+      .label = "run-aggregator-non-expired-reserve"
+    },
+    /* check nothing happened */
+    {
+      .opcode = OPCODE_EXPECT_TRANSFERS_EMPTY,
+      .label = "expect-empty-transactions-1"
+    },
+    /* Configuration says reserves expire after 5s! */
+    {
+      .opcode = OPCODE_WAIT,
+      .label = "wait (5s)",
+      .details.wait_delay = { 1000LL * 1000 * 6 } /* 6s */
+    },
+    /* This time the reserve expired, so the money should go back... */
+    {
+      .opcode = OPCODE_RUN_AGGREGATOR,
+      .label = "run-aggregator-non-expired-reserve"
+    },
+    /* Check exchange sent money back, minus closing fee of EUR:0.01  */
+    {
+      .opcode = OPCODE_EXPECT_TRANSFER,
+      .label = "check-reserve-expiration-transfer",
+      .details.expect_transfer.debit_account = 3,
+      .details.expect_transfer.credit_account = 4,
+      .details.expect_transfer.exchange_base_url =
+        "https://exchange.taler.net/",
+      .details.expect_transfer.amount = "EUR:4.99"
+    },
+    /* check nothing else happened */
+    {
+      .opcode = OPCODE_EXPECT_TRANSFERS_EMPTY,
+      .label = "expect-empty-transactions-1"
+    },
+    /* This cannot work unless #5077 is implemented. */
+#if TEST_5077
+    {
+      .opcode = OPCODE_RUN_TRANSFER,
+      .label = "run-transfer-bad-to-exchange",
+      .details.run_transfer.debit_account = 4,
+      .details.run_transfer.credit_account = 3,
+      .details.run_transfer.subject = "random junk",
+      .details.run_transfer.amount = "EUR:5.00"
+    },
+    {
+      .opcode = OPCODE_RUN_WIREWATCH,
+      .label = "run-wirewatch-on-bad-transfer"
+    },
+    {
+      .opcode = OPCODE_EXPECT_TRANSFER,
+      .label = "expect-bad-transfer-to-exchange",
+      .details.expect_transfer.debit_account = 4,
+      .details.expect_transfer.credit_account = 3,
+      .details.expect_transfer.exchange_base_url =
+        "https://exchange.taler.net/",
+      .details.expect_transfer.amount = "EUR:5.00"
+    },
+    {
+      .opcode = OPCODE_EXPECT_TRANSFER,
+      .label = "expect-rewire-transfer-from-exchange",
+      .details.expect_transfer.debit_account = 3,
+      .details.expect_transfer.credit_account = 4,
+      .details.expect_transfer.exchange_base_url =
+        "https://exchange.taler.net/",
+      .details.expect_transfer.amount = "EUR:5.00"
+    },
+    {
+      .opcode = OPCODE_EXPECT_TRANSFERS_EMPTY,
+      .label = "expect-empty-transactions-1"
+    },
+#endif
+
+    {
+      .opcode = OPCODE_TERMINATE_SUCCESS,
+      .label = "testcase-complete-terminating-with-success"
+    }
+  };
+  static struct State state = {
+    .commands = commands
+  };
+
+  GNUNET_SCHEDULER_add_shutdown (&shutdown_action,
+                                 &state);
+  timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MINUTES,
+                                               &timeout_action,
+                                               &state);
+  result = 1; /* test failed for undefined reason */
+  fb = TALER_FAKEBANK_start (8082);
+  if (NULL == fb)
+  {
+    GNUNET_SCHEDULER_shutdown ();
+    result = 77;
+    return;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Launching interpreter\n");
+  int_task = GNUNET_SCHEDULER_add_now (&interpreter,
+                                       &state);
+}
+
+
+/**
+ * Signal handler called for SIGCHLD.  Triggers the
+ * respective handler by writing to the trigger pipe.
+ */
+static void
+sighandler_child_death ()
+{
+  static char c;
+  int old_errno = errno;  /* back-up errno */
+
+  GNUNET_break (1 ==
+                GNUNET_DISK_file_write (GNUNET_DISK_pipe_handle
+                                          (sigpipe, GNUNET_DISK_PIPE_END_WRITE),
+                                        &c, sizeof (c)));
+  errno = old_errno;    /* restore errno */
+}
+
+
+int
+main (int argc,
+      char *const argv[])
+{
+  const char *plugin_name;
+  char *testname;
+  struct GNUNET_OS_Process *proc;
+  struct GNUNET_CONFIGURATION_Handle *cfg;
+  struct GNUNET_SIGNAL_Context *shc_chld;
+
+  result = -1;
+  if (NULL == (plugin_name = strrchr (argv[0], (int) '-')))
+  {
+    GNUNET_break (0);
+    return -1;
+  }
+  plugin_name++;
+  (void) GNUNET_asprintf (&testname,
+                          "test-taler-exchange-wirewatch-%s",
+                          plugin_name);
+  (void) GNUNET_asprintf (&config_filename,
+                          "%s.conf",
+                          testname);
+  /* these might get in the way */
+  unsetenv ("XDG_DATA_HOME");
+  unsetenv ("XDG_CONFIG_HOME");
+  GNUNET_log_setup ("test_taler_exchange_wirewatch",
+                    "WARNING",
+                    NULL);
+  /* check database is working */
+  {
+    struct GNUNET_PQ_Context *conn;
+    struct GNUNET_PQ_ExecuteStatement es[] = {
+      GNUNET_PQ_EXECUTE_STATEMENT_END
+    };
+
+    conn = GNUNET_PQ_connect ("postgres:///talercheck",
+                              es,
+                              NULL);
+    if (NULL == conn)
+      return 77;
+    GNUNET_PQ_disconnect (conn);
+  }
+  proc = GNUNET_OS_start_process (GNUNET_NO,
+                                  GNUNET_OS_INHERIT_STD_ALL,
+                                  NULL, NULL, NULL,
+                                  "taler-exchange-keyup",
+                                  "taler-exchange-keyup",
+                                  "-c", config_filename,
+                                  NULL);
+  if (NULL == proc)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Failed to run `taler-exchange-keyup`, is your PATH correct?\n");
+    return 77;
+  }
+  GNUNET_OS_process_wait (proc);
+  GNUNET_OS_process_destroy (proc);
+  proc = GNUNET_OS_start_process (GNUNET_NO,
+                                  GNUNET_OS_INHERIT_STD_ALL,
+                                  NULL, NULL, NULL,
+                                  "taler-exchange-dbinit",
+                                  "taler-exchange-dbinit",
+                                  "-c", config_filename,
+                                  "-r",
+                                  NULL);
+  if (NULL == proc)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Failed to run `taler-exchange-keyup`, is your PATH correct?\n");
+    return 77;
+  }
+  GNUNET_OS_process_wait (proc);
+  GNUNET_OS_process_destroy (proc);
+  if (GNUNET_OK !=
+      GNUNET_NETWORK_test_port_free (IPPROTO_TCP,
+                                     8082))
+  {
+    fprintf (stderr,
+             "Required port %u not available, skipping.\n",
+             (unsigned int) 8082);
+    return 77;
+  }
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_parse (cfg,
+                                  config_filename))
+  {
+    GNUNET_break (0);
+    GNUNET_free (config_filename);
+    GNUNET_free (testname);
+    return 2;
+  }
+  sigpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO,
+                              GNUNET_NO, GNUNET_NO);
+  GNUNET_assert (NULL != sigpipe);
+  shc_chld =
+    GNUNET_SIGNAL_handler_install (GNUNET_SIGCHLD,
+                                   &sighandler_child_death);
+  GNUNET_SCHEDULER_run (&run,
+                        cfg);
+  GNUNET_SIGNAL_handler_uninstall (shc_chld);
+  GNUNET_DISK_pipe_close (sigpipe);
+  GNUNET_CONFIGURATION_destroy (cfg);
+  GNUNET_free (config_filename);
+  GNUNET_free (testname);
+  return result;
+}
+
+
+/* end of test_taler_exchange_wirewatch.c */