Merge github.com:grpc/grpc into tfix2

1 files changed, 309 insertions, 0 deletions

diff --git a/test/core/slice/slice_test.cc b/test/core/slice/slice_test.cc
new file mode 100644
index 0000000000..aec5636376
--- /dev/null
+++ b/test/core/slice/slice_test.cc
@@ -0,0 +1,309 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/slice.h>
+
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "test/core/util/test_config.h"
+
+#define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x);
+
+static void test_slice_malloc_returns_something_sensible(void) {
+  /* Calls grpc_slice_create for various lengths and verifies the internals for
+     consistency. */
+  size_t length;
+  size_t i;
+  grpc_slice slice;
+
+  LOG_TEST_NAME("test_slice_malloc_returns_something_sensible");
+
+  for (length = 0; length <= 1024; length++) {
+    slice = grpc_slice_malloc(length);
+    /* If there is a length, slice.data must be non-NULL. If length is zero
+       we don't care. */
+    if (length > GRPC_SLICE_INLINED_SIZE) {
+      GPR_ASSERT(slice.data.refcounted.bytes);
+    }
+    /* Returned slice length must be what was requested. */
+    GPR_ASSERT(GRPC_SLICE_LENGTH(slice) == length);
+    /* If the slice has a refcount, it must be destroyable. */
+    if (slice.refcount) {
+      GPR_ASSERT(slice.refcount->vtable != NULL);
+      GPR_ASSERT(slice.refcount->vtable->ref != NULL);
+      GPR_ASSERT(slice.refcount->vtable->unref != NULL);
+      GPR_ASSERT(slice.refcount->vtable->hash != NULL);
+    }
+    /* We must be able to write to every byte of the data */
+    for (i = 0; i < length; i++) {
+      GRPC_SLICE_START_PTR(slice)[i] = (uint8_t)i;
+    }
+    /* And finally we must succeed in destroying the slice */
+    grpc_slice_unref(slice);
+  }
+}
+
+static void do_nothing(void* ignored) {}
+
+static void test_slice_new_returns_something_sensible(void) {
+  uint8_t x;
+
+  grpc_slice slice = grpc_slice_new(&x, 1, do_nothing);
+  GPR_ASSERT(slice.refcount);
+  GPR_ASSERT(slice.data.refcounted.bytes == &x);
+  GPR_ASSERT(slice.data.refcounted.length == 1);
+  grpc_slice_unref(slice);
+}
+
+/* destroy function that sets a mark to indicate it was called. */
+static void set_mark(void* p) { *((int*)p) = 1; }
+
+static void test_slice_new_with_user_data(void) {
+  int marker = 0;
+  uint8_t buf[2];
+  grpc_slice slice;
+
+  buf[0] = 0;
+  buf[1] = 1;
+  slice = grpc_slice_new_with_user_data(buf, 2, set_mark, &marker);
+  GPR_ASSERT(marker == 0);
+  GPR_ASSERT(GRPC_SLICE_LENGTH(slice) == 2);
+  GPR_ASSERT(GRPC_SLICE_START_PTR(slice)[0] == 0);
+  GPR_ASSERT(GRPC_SLICE_START_PTR(slice)[1] == 1);
+
+  /* unref should cause destroy function to run. */
+  grpc_slice_unref(slice);
+  GPR_ASSERT(marker == 1);
+}
+
+static int do_nothing_with_len_1_calls = 0;
+
+static void do_nothing_with_len_1(void* ignored, size_t len) {
+  GPR_ASSERT(len == 1);
+  do_nothing_with_len_1_calls++;
+}
+
+static void test_slice_new_with_len_returns_something_sensible(void) {
+  uint8_t x;
+  int num_refs = 5; /* To test adding/removing an arbitrary number of refs */
+  int i;
+
+  grpc_slice slice = grpc_slice_new_with_len(&x, 1, do_nothing_with_len_1);
+  GPR_ASSERT(slice.refcount); /* ref count is initialized to 1 at this point */
+  GPR_ASSERT(slice.data.refcounted.bytes == &x);
+  GPR_ASSERT(slice.data.refcounted.length == 1);
+  GPR_ASSERT(do_nothing_with_len_1_calls == 0);
+
+  /* Add an arbitrary number of refs to the slice and remoe the refs. This is to
+     make sure that that the destroy callback (i.e do_nothing_with_len_1()) is
+     not called until the last unref operation */
+  for (i = 0; i < num_refs; i++) {
+    grpc_slice_ref(slice);
+  }
+  for (i = 0; i < num_refs; i++) {
+    grpc_slice_unref(slice);
+  }
+  GPR_ASSERT(do_nothing_with_len_1_calls == 0); /* Shouldn't be called yet */
+
+  /* last unref */
+  grpc_slice_unref(slice);
+  GPR_ASSERT(do_nothing_with_len_1_calls == 1);
+}
+
+static void test_slice_sub_works(unsigned length) {
+  grpc_slice slice;
+  grpc_slice sub;
+  unsigned i, j, k;
+
+  LOG_TEST_NAME("test_slice_sub_works");
+  gpr_log(GPR_INFO, "length=%d", length);
+
+  /* Create a slice in which each byte is equal to the distance from it to the
+     beginning of the slice. */
+  slice = grpc_slice_malloc(length);
+  for (i = 0; i < length; i++) {
+    GRPC_SLICE_START_PTR(slice)[i] = (uint8_t)i;
+  }
+
+  /* Ensure that for all subsets length is correct and that we start on the
+     correct byte. Additionally check that no copies were made. */
+  for (i = 0; i < length; i++) {
+    for (j = i; j < length; j++) {
+      sub = grpc_slice_sub(slice, i, j);
+      GPR_ASSERT(GRPC_SLICE_LENGTH(sub) == j - i);
+      for (k = 0; k < j - i; k++) {
+        GPR_ASSERT(GRPC_SLICE_START_PTR(sub)[k] == (uint8_t)(i + k));
+      }
+      grpc_slice_unref(sub);
+    }
+  }
+  grpc_slice_unref(slice);
+}
+
+static void check_head_tail(grpc_slice slice, grpc_slice head,
+                            grpc_slice tail) {
+  GPR_ASSERT(GRPC_SLICE_LENGTH(slice) ==
+             GRPC_SLICE_LENGTH(head) + GRPC_SLICE_LENGTH(tail));
+  GPR_ASSERT(0 == memcmp(GRPC_SLICE_START_PTR(slice),
+                         GRPC_SLICE_START_PTR(head), GRPC_SLICE_LENGTH(head)));
+  GPR_ASSERT(0 == memcmp(GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(head),
+                         GRPC_SLICE_START_PTR(tail), GRPC_SLICE_LENGTH(tail)));
+}
+
+static void test_slice_split_head_works(size_t length) {
+  grpc_slice slice;
+  grpc_slice head, tail;
+  size_t i;
+
+  LOG_TEST_NAME("test_slice_split_head_works");
+  gpr_log(GPR_INFO, "length=%" PRIuPTR, length);
+
+  /* Create a slice in which each byte is equal to the distance from it to the
+     beginning of the slice. */
+  slice = grpc_slice_malloc(length);
+  for (i = 0; i < length; i++) {
+    GRPC_SLICE_START_PTR(slice)[i] = (uint8_t)i;
+  }
+
+  /* Ensure that for all subsets length is correct and that we start on the
+     correct byte. Additionally check that no copies were made. */
+  for (i = 0; i < length; i++) {
+    tail = grpc_slice_ref(slice);
+    head = grpc_slice_split_head(&tail, i);
+    check_head_tail(slice, head, tail);
+    grpc_slice_unref(tail);
+    grpc_slice_unref(head);
+  }
+
+  grpc_slice_unref(slice);
+}
+
+static void test_slice_split_tail_works(size_t length) {
+  grpc_slice slice;
+  grpc_slice head, tail;
+  size_t i;
+
+  LOG_TEST_NAME("test_slice_split_tail_works");
+  gpr_log(GPR_INFO, "length=%" PRIuPTR, length);
+
+  /* Create a slice in which each byte is equal to the distance from it to the
+     beginning of the slice. */
+  slice = grpc_slice_malloc(length);
+  for (i = 0; i < length; i++) {
+    GRPC_SLICE_START_PTR(slice)[i] = (uint8_t)i;
+  }
+
+  /* Ensure that for all subsets length is correct and that we start on the
+     correct byte. Additionally check that no copies were made. */
+  for (i = 0; i < length; i++) {
+    head = grpc_slice_ref(slice);
+    tail = grpc_slice_split_tail(&head, i);
+    check_head_tail(slice, head, tail);
+    grpc_slice_unref(tail);
+    grpc_slice_unref(head);
+  }
+
+  grpc_slice_unref(slice);
+}
+
+static void test_slice_from_copied_string_works(void) {
+  static const char* text = "HELLO WORLD!";
+  grpc_slice slice;
+
+  LOG_TEST_NAME("test_slice_from_copied_string_works");
+
+  slice = grpc_slice_from_copied_string(text);
+  GPR_ASSERT(strlen(text) == GRPC_SLICE_LENGTH(slice));
+  GPR_ASSERT(
+      0 == memcmp(text, GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice)));
+  grpc_slice_unref(slice);
+}
+
+static void test_slice_interning(void) {
+  LOG_TEST_NAME("test_slice_interning");
+
+  grpc_init();
+  grpc_slice src1 = grpc_slice_from_copied_string("hello123456789123456789");
+  grpc_slice src2 = grpc_slice_from_copied_string("hello123456789123456789");
+  GPR_ASSERT(GRPC_SLICE_START_PTR(src1) != GRPC_SLICE_START_PTR(src2));
+  grpc_slice interned1 = grpc_slice_intern(src1);
+  grpc_slice interned2 = grpc_slice_intern(src2);
+  GPR_ASSERT(GRPC_SLICE_START_PTR(interned1) ==
+             GRPC_SLICE_START_PTR(interned2));
+  GPR_ASSERT(GRPC_SLICE_START_PTR(interned1) != GRPC_SLICE_START_PTR(src1));
+  GPR_ASSERT(GRPC_SLICE_START_PTR(interned2) != GRPC_SLICE_START_PTR(src2));
+  grpc_slice_unref(src1);
+  grpc_slice_unref(src2);
+  grpc_slice_unref(interned1);
+  grpc_slice_unref(interned2);
+  grpc_shutdown();
+}
+
+static void test_static_slice_interning(void) {
+  LOG_TEST_NAME("test_static_slice_interning");
+
+  // grpc_init/grpc_shutdown deliberately omitted: they should not be necessary
+  // to intern a static slice
+
+  for (size_t i = 0; i < GRPC_STATIC_MDSTR_COUNT; i++) {
+    GPR_ASSERT(grpc_slice_is_equivalent(
+        grpc_static_slice_table[i],
+        grpc_slice_intern(grpc_static_slice_table[i])));
+  }
+}
+
+static void test_static_slice_copy_interning(void) {
+  LOG_TEST_NAME("test_static_slice_copy_interning");
+
+  grpc_init();
+
+  for (size_t i = 0; i < GRPC_STATIC_MDSTR_COUNT; i++) {
+    grpc_slice copy = grpc_slice_dup(grpc_static_slice_table[i]);
+    GPR_ASSERT(grpc_static_slice_table[i].refcount != copy.refcount);
+    GPR_ASSERT(grpc_static_slice_table[i].refcount ==
+               grpc_slice_intern(copy).refcount);
+    grpc_slice_unref(copy);
+  }
+
+  grpc_shutdown();
+}
+
+int main(int argc, char** argv) {
+  unsigned length;
+  grpc_test_init(argc, argv);
+  test_slice_malloc_returns_something_sensible();
+  test_slice_new_returns_something_sensible();
+  test_slice_new_with_user_data();
+  test_slice_new_with_len_returns_something_sensible();
+  for (length = 0; length < 128; length++) {
+    test_slice_sub_works(length);
+    test_slice_split_head_works(length);
+    test_slice_split_tail_works(length);
+  }
+  test_slice_from_copied_string_works();
+  test_slice_interning();
+  test_static_slice_interning();
+  test_static_slice_copy_interning();
+  return 0;
+}