Provide test API for keys serialization.

5 files changed, 195 insertions, 9 deletions

diff --git a/src/exchange-lib/Makefile.am b/src/exchange-lib/Makefile.am
index c22c47b53..4b1105d5a 100644
--- a/src/exchange-lib/Makefile.am
+++ b/src/exchange-lib/Makefile.am
@@ -58,6 +58,7 @@ libtalertesting_la_SOURCES = \
   testing_api_cmd_signal.c \
   testing_api_cmd_check_keys.c \
   testing_api_cmd_batch.c \
+  testing_api_cmd_serialize_keys.c \
   testing_api_helpers.c \
   testing_api_loop.c \
   testing_api_traits.c \
diff --git a/src/exchange-lib/testing_api_cmd_check_keys.c b/src/exchange-lib/testing_api_cmd_check_keys.c
index 1f559ed56..3aa6c24f6 100644
--- a/src/exchange-lib/testing_api_cmd_check_keys.c
+++ b/src/exchange-lib/testing_api_cmd_check_keys.c
@@ -36,14 +36,15 @@
 struct CheckKeysState
 {
   /**
-   * How many times the /keys response was received by the
-   * exchange under test.
+   * This number will instruct the CMD interpreter to
+   * make sure that /keys was downloaded `generation` times
+   * _before_ running the very CMD logic.
    */
   unsigned int generation;
 
   /**
-   * How many denomination keys the exchange is supposed to
-   * have.
+   * How many denomination keys the exchange is
+   * supposed to have.
    */
   unsigned int num_denom_keys;
 };
@@ -67,9 +68,9 @@ check_keys_run (void *cls,
               "cmd `%s', key generation: %d\n",
               cmd->label,
               is->key_generation);
+
   if (is->key_generation < cks->generation)
   {
-    /* Go back to waiting for /keys signal! */
     is->working = GNUNET_NO;
     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                 "Triggering /keys dl, cmd `%s'\n",
@@ -129,8 +130,11 @@ check_keys_cleanup (void *cls,
  * @a exchange matches @a num_denom_keys.
  *
  * @param label command label
- * @param generation how many /keys responses are expected to
- *        have been returned when this CMD will be run.
+ * @param generation when this command is run, exactly @a
+ *        generation /keys downloads took place.  If the number
+ *        of downloads is less than @a generation, the logic will
+ *        first make sure that @a generation downloads are done,
+ *        and _then_ execute the rest of the command.
  * @param num_denom_keys expected number of denomination keys.
  * @param exchange connection handle to the exchange to test.
  *
diff --git a/src/exchange-lib/testing_api_cmd_serialize_keys.c b/src/exchange-lib/testing_api_cmd_serialize_keys.c
new file mode 100644
index 000000000..f647a6224
--- /dev/null
+++ b/src/exchange-lib/testing_api_cmd_serialize_keys.c
@@ -0,0 +1,138 @@
+/*
+  This file is part of TALER
+  (C) 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-lib/testing_api_cmd_serialize_keys.c
+ * @brief Lets tests use the keys serialization API.
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include <jansson.h>
+#include "exchange_api_handle.h"
+#include "taler_testing_lib.h"
+
+
+/**
+ * Internal state for a serialize-keys CMD.
+ */
+struct SerializeKeysState
+{
+  /**
+   * Serialized keys.
+   */
+  json_t *keys;
+};
+
+
+/**
+ * Run the command.
+ *
+ * @param cls closure.
+ * @param cmd the command to execute.
+ * @param is the interpreter state.
+ */
+static void
+serialize_keys_run (void *cls,
+                    const struct TALER_TESTING_Command *cmd,
+                    struct TALER_TESTING_Interpreter *is)
+{
+  struct SerializeKeysState *sks = cls;
+
+  sks->keys = TALER_EXCHANGE_serialize_data (is->exchange);
+
+  if (NULL == sks->keys)
+    TALER_TESTING_interpreter_fail (is);
+}
+
+
+/**
+ * Cleanup the state of a "serialize keys" CMD.
+ *
+ * @param cls closure.
+ * @param cmd the command which is being cleaned up.
+ */
+void
+serialize_keys_cleanup (void *cls,
+                        const struct TALER_TESTING_Command *cmd)
+{
+  struct SerializeKeysState *sks = cls;
+
+  if (NULL != sks->keys)
+  {
+    json_decref (sks->keys);   
+  }
+
+  GNUNET_free (sks);
+}
+
+
+/**
+ * Offer serialized keys as trait.
+ *
+ * @param cls closure.
+ * @param ret[out] result.
+ * @param trait name of the trait.
+ * @param index index number of the object to offer.
+ *
+ * @return #GNUNET_OK on success.
+ */
+static int
+serialize_keys_traits (void *cls,
+                       const void **ret,
+                       const char *trait,
+                       unsigned int index)
+{
+  struct SerializeKeysState *sks = cls;
+
+  struct TALER_TESTING_Trait traits[] = {
+
+    TALER_TESTING_make_trait_exchange_keys (0,
+                                            sks->keys),
+    TALER_TESTING_trait_end ()
+  };
+
+  return TALER_TESTING_get_trait (traits,
+                                  ret,
+                                  trait,
+                                  index);
+}
+
+/**
+ * Make a serialize-keys CMD.
+ *
+ * @param label CMD label
+ * @return the CMD.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_serialize_keys (const char *label)
+{
+  struct SerializeKeysState *sks;
+
+  sks = GNUNET_new (struct SerializeKeysState);
+  struct TALER_TESTING_Command cmd = {
+    .cls = sks,
+    .label = label,
+    .run = serialize_keys_run,
+    .cleanup = serialize_keys_cleanup,
+    .traits = serialize_keys_traits  
+  };
+
+  return cmd;
+}
diff --git a/src/exchange-lib/testing_api_cmd_wire.c b/src/exchange-lib/testing_api_cmd_wire.c
index 0153af195..283e8769f 100644
--- a/src/exchange-lib/testing_api_cmd_wire.c
+++ b/src/exchange-lib/testing_api_cmd_wire.c
@@ -159,7 +159,7 @@ wire_cb (void *cls,
  * @param cmd the command to execute.
  * @param is the interpreter state.
  */
-void
+static void
 wire_run (void *cls,
           const struct TALER_TESTING_Command *cmd,
           struct TALER_TESTING_Interpreter *is)
@@ -179,7 +179,7 @@ wire_run (void *cls,
  * @param cls closure.
  * @param cmd the command which is being cleaned up.
  */
-void
+static void
 wire_cleanup (void *cls,
               const struct TALER_TESTING_Command *cmd)
 {
diff --git a/src/exchange-lib/testing_api_trait_json.c b/src/exchange-lib/testing_api_trait_json.c
index d27307918..5f6647fbb 100644
--- a/src/exchange-lib/testing_api_trait_json.c
+++ b/src/exchange-lib/testing_api_trait_json.c
@@ -30,6 +30,49 @@
 #include "taler_testing_lib.h"
 
 #define TALER_TESTING_TRAIT_WIRE_DETAILS "wire-details"
+#define TALER_TESTING_TRAIT_EXCHANGE_KEYS "exchange-keys"
+
+/**
+ * Obtain serialized exchange keys from @a cmd.
+ *
+ * @param cmd command to extract the keys from.
+ * @param index index number associate with the keys on offer.
+ * @param keys[out] where to write the serialized keys.
+ * @return #GNUNET_OK on success.
+ */
+int
+TALER_TESTING_get_trait_exchange_keys
+  (const struct TALER_TESTING_Command *cmd,
+   unsigned int index,
+   const json_t **keys)
+{
+  return cmd->traits (cmd->cls,
+                      (const void **) keys,
+                      TALER_TESTING_TRAIT_EXCHANGE_KEYS,
+                      index);
+}
+
+
+/**
+ * Offer serialized keys in a trait.
+ *
+ * @param index index number associate with the serial keys
+ *        on offer.
+ * @param keys serialized keys to offer.
+ * @return the trait.
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_exchange_keys
+  (unsigned int index,
+   const json_t *keys)
+{
+  struct TALER_TESTING_Trait ret = {
+    .index = index,
+    .trait_name = TALER_TESTING_TRAIT_EXCHANGE_KEYS,
+    .ptr = (const json_t *) keys
+  };
+  return ret;
+}
 
 /**
  * Obtain wire details from @a cmd.