1 files changed, 258 insertions, 0 deletions
diff --git a/test/core/transport/metadata_test.c b/test/core/transport/metadata_test.c
new file mode 100644
index 0000000000..d71628a264
--- /dev/null
+++ b/test/core/transport/metadata_test.c
@@ -0,0 +1,258 @@
+/*
+ *
+ * Copyright 2014, 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/transport/metadata.h"
+
+#include <stdio.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "test/core/util/test_config.h"
+
+#define LOG_TEST() gpr_log(GPR_INFO, "%s", __FUNCTION__)
+
+/* a large number */
+#define MANY 1000000
+
+static void test_no_op() {
+  grpc_mdctx *ctx;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  grpc_mdctx_orphan(ctx);
+}
+
+static void test_create_string() {
+  grpc_mdctx *ctx;
+  grpc_mdstr *s1, *s2, *s3;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  s1 = grpc_mdstr_from_string(ctx, "hello");
+  s2 = grpc_mdstr_from_string(ctx, "hello");
+  s3 = grpc_mdstr_from_string(ctx, "very much not hello");
+  GPR_ASSERT(s1 == s2);
+  GPR_ASSERT(s3 != s1);
+  GPR_ASSERT(gpr_slice_str_cmp(s1->slice, "hello") == 0);
+  GPR_ASSERT(gpr_slice_str_cmp(s3->slice, "very much not hello") == 0);
+  grpc_mdstr_unref(s1);
+  grpc_mdstr_unref(s2);
+  grpc_mdctx_orphan(ctx);
+  grpc_mdstr_unref(s3);
+}
+
+static void test_create_metadata() {
+  grpc_mdctx *ctx;
+  grpc_mdelem *m1, *m2, *m3;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  m1 = grpc_mdelem_from_strings(ctx, "a", "b");
+  m2 = grpc_mdelem_from_strings(ctx, "a", "b");
+  m3 = grpc_mdelem_from_strings(ctx, "a", "c");
+  GPR_ASSERT(m1 == m2);
+  GPR_ASSERT(m3 != m1);
+  GPR_ASSERT(m3->key == m1->key);
+  GPR_ASSERT(m3->value != m1->value);
+  GPR_ASSERT(gpr_slice_str_cmp(m1->key->slice, "a") == 0);
+  GPR_ASSERT(gpr_slice_str_cmp(m1->value->slice, "b") == 0);
+  GPR_ASSERT(gpr_slice_str_cmp(m3->value->slice, "c") == 0);
+  grpc_mdelem_unref(m1);
+  grpc_mdelem_unref(m2);
+  grpc_mdelem_unref(m3);
+  grpc_mdctx_orphan(ctx);
+}
+
+static void test_create_many_ephemeral_metadata() {
+  grpc_mdctx *ctx;
+  char buffer[256];
+  long i;
+  size_t mdtab_capacity_before;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  mdtab_capacity_before = grpc_mdctx_get_mdtab_capacity_test_only(ctx);
+  /* add, and immediately delete a bunch of different elements */
+  for (i = 0; i < MANY; i++) {
+    sprintf(buffer, "%ld", i);
+    grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", buffer));
+  }
+  /* capacity should not grow */
+  GPR_ASSERT(mdtab_capacity_before ==
+             grpc_mdctx_get_mdtab_capacity_test_only(ctx));
+  grpc_mdctx_orphan(ctx);
+}
+
+static void test_create_many_persistant_metadata() {
+  grpc_mdctx *ctx;
+  char buffer[256];
+  long i;
+  grpc_mdelem **created = gpr_malloc(sizeof(grpc_mdelem *) * MANY);
+  grpc_mdelem *md;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  /* add phase */
+  for (i = 0; i < MANY; i++) {
+    sprintf(buffer, "%ld", i);
+    created[i] = grpc_mdelem_from_strings(ctx, "a", buffer);
+  }
+  /* verify phase */
+  for (i = 0; i < MANY; i++) {
+    sprintf(buffer, "%ld", i);
+    md = grpc_mdelem_from_strings(ctx, "a", buffer);
+    GPR_ASSERT(md == created[i]);
+    grpc_mdelem_unref(md);
+  }
+  /* cleanup phase */
+  for (i = 0; i < MANY; i++) {
+    grpc_mdelem_unref(created[i]);
+  }
+  grpc_mdctx_orphan(ctx);
+
+  gpr_free(created);
+}
+
+static void test_spin_creating_the_same_thing() {
+  grpc_mdctx *ctx;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+  GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 0);
+  GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 0);
+
+  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
+  GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
+
+  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
+  GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
+
+  grpc_mdelem_unref(grpc_mdelem_from_strings(ctx, "a", "b"));
+  GPR_ASSERT(grpc_mdctx_get_mdtab_count_test_only(ctx) == 1);
+  GPR_ASSERT(grpc_mdctx_get_mdtab_free_test_only(ctx) == 1);
+
+  grpc_mdctx_orphan(ctx);
+}
+
+static void test_things_stick_around() {
+  grpc_mdctx *ctx;
+  int i, j;
+  char buffer[64];
+  int nstrs = 10000;
+  grpc_mdstr **strs = gpr_malloc(sizeof(grpc_mdstr *) * nstrs);
+  int *shuf = gpr_malloc(sizeof(int) * nstrs);
+  grpc_mdstr *test;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+
+  for (i = 0; i < nstrs; i++) {
+    sprintf(buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%dx", i);
+    strs[i] = grpc_mdstr_from_string(ctx, buffer);
+    shuf[i] = i;
+  }
+
+  for (i = 0; i < nstrs; i++) {
+    grpc_mdstr_ref(strs[i]);
+    grpc_mdstr_unref(strs[i]);
+  }
+
+  for (i = 0; i < nstrs; i++) {
+    int p = rand() % nstrs;
+    int q = rand() % nstrs;
+    int temp = shuf[p];
+    shuf[p] = shuf[q];
+    shuf[q] = temp;
+  }
+
+  for (i = 0; i < nstrs; i++) {
+    grpc_mdstr_unref(strs[shuf[i]]);
+    for (j = i + 1; j < nstrs; j++) {
+      sprintf(buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%dx", shuf[j]);
+      test = grpc_mdstr_from_string(ctx, buffer);
+      GPR_ASSERT(test == strs[shuf[j]]);
+      grpc_mdstr_unref(test);
+    }
+  }
+
+  grpc_mdctx_orphan(ctx);
+  gpr_free(strs);
+  gpr_free(shuf);
+}
+
+static void test_slices_work() {
+  /* ensure no memory leaks when switching representation from mdstr to slice */
+  grpc_mdctx *ctx;
+  grpc_mdstr *str;
+  gpr_slice slice;
+
+  LOG_TEST();
+
+  ctx = grpc_mdctx_create();
+
+  str = grpc_mdstr_from_string(
+      ctx, "123456789012345678901234567890123456789012345678901234567890");
+  slice = gpr_slice_ref(str->slice);
+  grpc_mdstr_unref(str);
+  gpr_slice_unref(slice);
+
+  str = grpc_mdstr_from_string(
+      ctx, "123456789012345678901234567890123456789012345678901234567890");
+  slice = gpr_slice_ref(str->slice);
+  gpr_slice_unref(slice);
+  grpc_mdstr_unref(str);
+
+  grpc_mdctx_orphan(ctx);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  test_no_op();
+  test_create_string();
+  test_create_metadata();
+  test_create_many_ephemeral_metadata();
+  test_create_many_persistant_metadata();
+  test_spin_creating_the_same_thing();
+  test_things_stick_around();
+  test_slices_work();
+  return 0;
+}