1 files changed, 119 insertions, 0 deletions
diff --git a/src/test/common/test_split.cc b/src/test/common/test_split.cc
new file mode 100644
index 000000000..285dea752
--- /dev/null
+++ b/src/test/common/test_split.cc
@@ -0,0 +1,119 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include "common/split.h"
+#include <algorithm>
+#include <gtest/gtest.h>
+
+namespace ceph {
+
+using string_list = std::initializer_list<std::string_view>;
+
+bool operator==(const split& lhs, const string_list& rhs) {
+  return std::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end());
+}
+bool operator==(const string_list& lhs, const split& rhs) {
+  return std::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end());
+}
+
+TEST(split, split)
+{
+  EXPECT_EQ(string_list({}), split(""));
+  EXPECT_EQ(string_list({}), split(","));
+  EXPECT_EQ(string_list({}), split(",;"));
+
+  EXPECT_EQ(string_list({"a"}), split("a,;"));
+  EXPECT_EQ(string_list({"a"}), split(",a;"));
+  EXPECT_EQ(string_list({"a"}), split(",;a"));
+
+  EXPECT_EQ(string_list({"a", "b"}), split("a,b;"));
+  EXPECT_EQ(string_list({"a", "b"}), split("a,;b"));
+  EXPECT_EQ(string_list({"a", "b"}), split(",a;b"));
+}
+
+TEST(split, iterator_indirection)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+  ASSERT_NE(i, parts.end());
+  EXPECT_EQ("a", *i); // test operator*
+}
+
+TEST(split, iterator_dereference)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+  ASSERT_NE(i, parts.end());
+  EXPECT_EQ(1, i->size()); // test operator->
+}
+
+TEST(split, iterator_pre_increment)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+  ASSERT_NE(i, parts.end());
+
+  ASSERT_EQ("a", *i);
+  EXPECT_EQ("b", *++i); // test operator++()
+  EXPECT_EQ("b", *i);
+}
+
+TEST(split, iterator_post_increment)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+  ASSERT_NE(i, parts.end());
+
+  ASSERT_EQ("a", *i);
+  EXPECT_EQ("a", *i++); // test operator++(int)
+  ASSERT_NE(parts.end(), i);
+  EXPECT_EQ("b", *i);
+}
+
+TEST(split, iterator_singular)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+
+  // test comparions against default-constructed 'singular' iterators
+  split::iterator j;
+  split::iterator k;
+  EXPECT_EQ(j, parts.end()); // singular == end
+  EXPECT_EQ(j, k);           // singular == singular
+  EXPECT_NE(j, i);           // singular != valid
+}
+
+TEST(split, iterator_multipass)
+{
+  const auto parts = split("a,b");
+  auto i = parts.begin();
+  ASSERT_NE(i, parts.end());
+
+  // copy the iterator to test LegacyForwardIterator's multipass guarantee
+  auto j = i;
+  ASSERT_EQ(i, j);
+
+  ASSERT_EQ("a", *i);
+  ASSERT_NE(parts.end(), ++i);
+  EXPECT_EQ("b", *i);
+
+  ASSERT_EQ("a", *j); // test that ++i left j unmodified
+  ASSERT_NE(parts.end(), ++j);
+  EXPECT_EQ("b", *j);
+
+  EXPECT_EQ(i, j);
+}
+
+} // namespace ceph