Initial checkin of gRPC to third_party/

third_party/grpc/test/core/support/slice_buffer_test.c

Index: third_party/grpc/test/core/support/slice_buffer_test.c
diff --git a/third_party/grpc/test/core/support/slice_buffer_test.c b/third_party/grpc/test/core/support/slice_buffer_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..cf2da84c2bbad33c47b88fe99e801893b9c0370a
--- /dev/null
+++ b/third_party/grpc/test/core/support/slice_buffer_test.c
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2015, 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 <grpc/support/log.h>
+#include <grpc/support/slice_buffer.h>
+#include "test/core/util/test_config.h"
+
+void test_slice_buffer_add() {
+  gpr_slice_buffer buf;
+  gpr_slice aaa = gpr_slice_from_copied_string("aaa");
+  gpr_slice bb = gpr_slice_from_copied_string("bb");
+  size_t i;
+
+  gpr_slice_buffer_init(&buf);
+  for (i = 0; i < 10; i++) {
+    gpr_slice_ref(aaa);
+    gpr_slice_ref(bb);
+    gpr_slice_buffer_add(&buf, aaa);
+    gpr_slice_buffer_add(&buf, bb);
+  }
+  GPR_ASSERT(buf.count > 0);
+  GPR_ASSERT(buf.length == 50);
+  gpr_slice_buffer_reset_and_unref(&buf);
+  GPR_ASSERT(buf.count == 0);
+  GPR_ASSERT(buf.length == 0);
+  for (i = 0; i < 10; i++) {
+    gpr_slice_ref(aaa);
+    gpr_slice_ref(bb);
+    gpr_slice_buffer_add(&buf, aaa);
+    gpr_slice_buffer_add(&buf, bb);
+  }
+  GPR_ASSERT(buf.count > 0);
+  GPR_ASSERT(buf.length == 50);
+  for (i = 0; i < 10; i++) {
+    gpr_slice_buffer_pop(&buf);
+    gpr_slice_unref(aaa);
+    gpr_slice_unref(bb);
+  }
+  GPR_ASSERT(buf.count == 0);
+  GPR_ASSERT(buf.length == 0);
+  gpr_slice_buffer_destroy(&buf);
+}
+
+void test_slice_buffer_move_first() {
+  gpr_slice slices[3];
+  gpr_slice_buffer src;
+  gpr_slice_buffer dst;
+  int idx = 0;
+  size_t src_len = 0;
+  size_t dst_len = 0;
+
+  slices[0] = gpr_slice_from_copied_string("aaa");
+  slices[1] = gpr_slice_from_copied_string("bbbb");
+  slices[2] = gpr_slice_from_copied_string("ccc");
+
+  gpr_slice_buffer_init(&src);
+  gpr_slice_buffer_init(&dst);
+  for (idx = 0; idx < 3; idx++) {
+    gpr_slice_ref(slices[idx]);
+    /* For this test, it is important that we add each slice at a new
+       slice index */
+    gpr_slice_buffer_add_indexed(&src, slices[idx]);
+    gpr_slice_buffer_add_indexed(&dst, slices[idx]);
+  }
+
+  /* Case 1: Move more than the first slice's length from src to dst */
+  src_len = src.length;
+  dst_len = dst.length;
+  gpr_slice_buffer_move_first(&src, 4, &dst);
+  src_len -= 4;
+  dst_len += 4;
+  GPR_ASSERT(src.length == src_len);
+  GPR_ASSERT(dst.length == dst_len);
+
+  /* src now has two slices ["bbb"] and  ["ccc"] */
+  /* Case 2: Move the first slice from src to dst */
+  gpr_slice_buffer_move_first(&src, 3, &dst);
+  src_len -= 3;
+  dst_len += 3;
+  GPR_ASSERT(src.length == src_len);
+  GPR_ASSERT(dst.length == dst_len);
+
+  /* src now has one slice ["ccc"] */
+  /* Case 3: Move less than the first slice's length from src to dst*/
+  gpr_slice_buffer_move_first(&src, 2, &dst);
+  src_len -= 2;
+  dst_len += 2;
+  GPR_ASSERT(src.length == src.length);
+  GPR_ASSERT(dst.length == dst.length);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+
+  test_slice_buffer_add();
+  test_slice_buffer_move_first();
+
+  return 0;
+}