Export of internal Abseil changes

--
87cdfd6aa40941e116cd79ef70f9a7a8271db163 by Abseil Team <absl-team@google.com>:

Fix a typo in random.h API documentation.

PiperOrigin-RevId: 305176308

--
8a38e1df49a18a954daca3ce617fd69045ff4c19 by Derek Mauro <dmauro@google.com>:

Import GitHub #647: Allow external add_subdirectory for using GoogleTest

PiperOrigin-RevId: 305156797

--
b1a2441536d4964fbe4e2329e74c322e6c41a4e6 by Gennadiy Rozental <rogeeff@google.com>:

temporary roll back.

PiperOrigin-RevId: 305149619

--
c78767577264348d2f881893f9407aadfe73ab75 by CJ Johnson <johnsoncj@google.com>:

Rollback update to linux_clang-latest container while investigating
a compiler bug.

PiperOrigin-RevId: 304897689

--
3c6fd38f53d2e982569fdba4043f75271c7b5de4 by Derek Mauro <dmauro@google.com>:

Update linux_clang-latest container to one based on Ubuntu 18.04,
which has libstdc++-8.

PiperOrigin-RevId: 304885120
GitOrigin-RevId: 87cdfd6aa40941e116cd79ef70f9a7a8271db163
Change-Id: Iefa6efee93907ec0eecb8add804c5cc2f052b64d

1 files changed, 0 insertions, 47 deletions

diff --git a/absl/strings/cord_test.cc b/absl/strings/cord_test.cc
index 0ec93b4c45..49178498fe 100644
--- a/absl/strings/cord_test.cc
+++ b/absl/strings/cord_test.cc
@@ -1403,53 +1403,6 @@ TEST(CordChunkIterator, Operations) {
   VerifyChunkIterator(subcords, 128);
 }
 
-TEST(CordChunkIterator, MaxLengthFullTree) {
-  // Start with a 1-byte cord, and then double its length in a loop.  We should
-  // be able to do this until the point where we would overflow size_t.
-
-  absl::Cord cord;
-  size_t size = 1;
-  AddExternalMemory("x", &cord);
-  EXPECT_EQ(cord.size(), size);
-
-  const int kCordLengthDoublingLimit = std::numeric_limits<size_t>::digits - 1;
-  for (int i = 0; i < kCordLengthDoublingLimit; ++i) {
-    cord.Prepend(absl::Cord(cord));
-    size <<= 1;
-
-    EXPECT_EQ(cord.size(), size);
-
-    auto chunk_it = cord.chunk_begin();
-    EXPECT_EQ(*chunk_it, "x");
-  }
-
-  EXPECT_DEATH_IF_SUPPORTED(
-      (cord.Prepend(absl::Cord(cord)), *cord.chunk_begin()),
-      "Cord is too long");
-}
-
-TEST(CordChunkIterator, MaxDepth) {
-  // By reusing nodes, it's possible in pathological cases to build a Cord that
-  // exceeds both the maximum permissible length and depth.  In this case, the
-  // violation of the maximum depth is reported.
-  absl::Cord left_child;
-  AddExternalMemory("x", &left_child);
-  absl::Cord root = left_child;
-
-  for (int i = 0; i < absl::cord_internal::MaxCordDepth() - 2; ++i) {
-    size_t new_size = left_child.size() + root.size();
-    root.Prepend(left_child);
-    EXPECT_EQ(root.size(), new_size);
-
-    auto chunk_it = root.chunk_begin();
-    EXPECT_EQ(*chunk_it, "x");
-
-    std::swap(left_child, root);
-  }
-
-  EXPECT_DEATH_IF_SUPPORTED(root.Prepend(left_child), "Cord is too long");
-}
-
 TEST(CordCharIterator, Traits) {
   static_assert(std::is_copy_constructible<absl::Cord::CharIterator>::value,
                 "");