Initial checkin of gRPC to third_party/

third_party/grpc/test/core/channel/channel_stack_test.c

Index: third_party/grpc/test/core/channel/channel_stack_test.c
diff --git a/third_party/grpc/test/core/channel/channel_stack_test.c b/third_party/grpc/test/core/channel/channel_stack_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..e19e9a57aed91b65568f93345b6a845ffcc98b04
--- /dev/null
+++ b/third_party/grpc/test/core/channel/channel_stack_test.c
@@ -0,0 +1,151 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/channel/channel_stack.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "test/core/util/test_config.h"
+
+static void channel_init_func(grpc_exec_ctx *exec_ctx,
+                              grpc_channel_element *elem,
+                              grpc_channel_element_args *args) {
+  GPR_ASSERT(args->channel_args->num_args == 1);
+  GPR_ASSERT(args->channel_args->args[0].type == GRPC_ARG_INTEGER);
+  GPR_ASSERT(0 == strcmp(args->channel_args->args[0].key, "test_key"));
+  GPR_ASSERT(args->channel_args->args[0].value.integer == 42);
+  GPR_ASSERT(args->is_first);
+  GPR_ASSERT(args->is_last);
+  *(int *)(elem->channel_data) = 0;
+}
+
+static void call_init_func(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                           grpc_call_element_args *args) {
+  ++*(int *)(elem->channel_data);
+  *(int *)(elem->call_data) = 0;
+}
+
+static void channel_destroy_func(grpc_exec_ctx *exec_ctx,
+                                 grpc_channel_element *elem) {}
+
+static void call_destroy_func(grpc_exec_ctx *exec_ctx,
+                              grpc_call_element *elem) {
+  ++*(int *)(elem->channel_data);
+}
+
+static void call_func(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                      grpc_transport_stream_op *op) {
+  ++*(int *)(elem->call_data);
+}
+
+static void channel_func(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
+                         grpc_transport_op *op) {
+  ++*(int *)(elem->channel_data);
+}
+
+static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
+  return gpr_strdup("peer");
+}
+
+static void free_channel(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  grpc_channel_stack_destroy(exec_ctx, arg);
+  gpr_free(arg);
+}
+
+static void free_call(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
+  grpc_call_stack_destroy(exec_ctx, arg);
+  gpr_free(arg);
+}
+
+static void test_create_channel_stack(void) {
+  const grpc_channel_filter filter = {
+      call_func, channel_func, sizeof(int), call_init_func,
+      grpc_call_stack_ignore_set_pollset, call_destroy_func, sizeof(int),
+      channel_init_func, channel_destroy_func, get_peer, "some_test_filter"};
+  const grpc_channel_filter *filters = &filter;
+  grpc_channel_stack *channel_stack;
+  grpc_call_stack *call_stack;
+  grpc_channel_element *channel_elem;
+  grpc_call_element *call_elem;
+  grpc_arg arg;
+  grpc_channel_args chan_args;
+  int *channel_data;
+  int *call_data;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
+  arg.type = GRPC_ARG_INTEGER;
+  arg.key = "test_key";
+  arg.value.integer = 42;
+
+  chan_args.num_args = 1;
+  chan_args.args = &arg;
+
+  channel_stack = gpr_malloc(grpc_channel_stack_size(&filters, 1));
+  grpc_channel_stack_init(&exec_ctx, 1, free_channel, channel_stack, &filters,
+                          1, &chan_args, "test", channel_stack);
+  GPR_ASSERT(channel_stack->count == 1);
+  channel_elem = grpc_channel_stack_element(channel_stack, 0);
+  channel_data = (int *)channel_elem->channel_data;
+  GPR_ASSERT(*channel_data == 0);
+
+  call_stack = gpr_malloc(channel_stack->call_stack_size);
+  grpc_call_stack_init(&exec_ctx, channel_stack, 1, free_call, call_stack, NULL,
+                       NULL, call_stack);
+  GPR_ASSERT(call_stack->count == 1);
+  call_elem = grpc_call_stack_element(call_stack, 0);
+  GPR_ASSERT(call_elem->filter == channel_elem->filter);
+  GPR_ASSERT(call_elem->channel_data == channel_elem->channel_data);
+  call_data = (int *)call_elem->call_data;
+  GPR_ASSERT(*call_data == 0);
+  GPR_ASSERT(*channel_data == 1);
+
+  GRPC_CALL_STACK_UNREF(&exec_ctx, call_stack, "done");
+  grpc_exec_ctx_flush(&exec_ctx);
+  GPR_ASSERT(*channel_data == 2);
+
+  GRPC_CHANNEL_STACK_UNREF(&exec_ctx, channel_stack, "done");
+
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  test_create_channel_stack();
+  grpc_shutdown();
+  return 0;
+}