1 files changed, 125 insertions, 0 deletions
diff --git a/src/jaegertracing/opentelemetry-cpp/api/test/nostd/string_view_test.cc b/src/jaegertracing/opentelemetry-cpp/api/test/nostd/string_view_test.cc
new file mode 100644
index 000000000..fc580debc
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/api/test/nostd/string_view_test.cc
@@ -0,0 +1,125 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#include "opentelemetry/nostd/string_view.h"
+
+#include <gtest/gtest.h>
+#include <cstring>
+#include <map>
+
+using opentelemetry::nostd::string_view;
+
+TEST(StringViewTest, DefaultConstruction)
+{
+  string_view ref;
+  EXPECT_EQ(ref.data(), nullptr);
+  EXPECT_EQ(ref.length(), 0);
+}
+
+TEST(StringViewTest, CStringInitialization)
+{
+  const char *val = "hello world";
+
+  string_view ref(val);
+
+  EXPECT_EQ(ref.data(), val);
+  EXPECT_EQ(ref.length(), std::strlen(val));
+}
+
+TEST(StringViewTest, StdStringInitialization)
+{
+  const std::string val = "hello world";
+
+  string_view ref(val);
+
+  EXPECT_EQ(ref.data(), val.data());
+  EXPECT_EQ(ref.length(), val.size());
+}
+
+TEST(StringViewTest, Copy)
+{
+  const std::string val = "hello world";
+
+  string_view ref(val);
+  string_view cpy(ref);
+
+  EXPECT_EQ(cpy.data(), val);
+  EXPECT_EQ(cpy.length(), val.length());
+  EXPECT_EQ(cpy, val);
+}
+
+TEST(StringViewTest, Accessor)
+{
+  string_view s = "abc123";
+  EXPECT_EQ(s.data(), &s[0]);
+  EXPECT_EQ(s.data() + 1, &s[1]);
+}
+
+TEST(StringViewTest, ExplicitStdStringConversion)
+{
+  std::string s = static_cast<std::string>(string_view{"abc"});
+  EXPECT_EQ(s, "abc");
+}
+
+TEST(StringViewTest, SubstrPortion)
+{
+  string_view s = "abc123";
+  EXPECT_EQ("123", s.substr(3));
+  EXPECT_EQ("12", s.substr(3, 2));
+}
+
+TEST(StringViewTest, SubstrOutOfRange)
+{
+  string_view s = "abc123";
+#if __EXCEPTIONS || defined(HAVE_CPP_STDLIB)
+  EXPECT_THROW(s.substr(10), std::out_of_range);
+#else
+  EXPECT_DEATH({ s.substr(10); }, "");
+#endif
+}
+
+TEST(StringViewTest, FindSingleCharacter)
+{
+  string_view s = "abc";
+
+  // starting from 0-th position (default)
+  EXPECT_EQ(s.find('a'), 0);
+  EXPECT_EQ(s.find('b'), 1);
+  EXPECT_EQ(s.find('c'), 2);
+  EXPECT_EQ(s.find('d'), -1);  // FIXME: string_view:npos - problem with linker
+
+  // starting from given index
+  EXPECT_EQ(s.find('a', 1), -1);
+  EXPECT_EQ(s.find('b', 1), 1);
+
+  // out of index
+  EXPECT_EQ(s.find('a', 10), -1);
+}
+
+TEST(StringViewTest, Compare)
+{
+  string_view s1 = "aaa";
+  string_view s2 = "bbb";
+  string_view s3 = "aaa";
+
+  // Equals
+  EXPECT_EQ(s1, s3);
+  EXPECT_EQ(s1, s1);
+
+  // Less then
+  EXPECT_LT(s1, s2);
+
+  // Greater then
+  EXPECT_GT(s2, s1);
+}
+
+TEST(StringViewTest, MapKeyOrdering)
+{
+  std::map<string_view, size_t> m = {{"bbb", 2}, {"aaa", 1}, {"ccc", 3}};
+  size_t i                        = 1;
+  for (const auto &kv : m)
+  {
+    EXPECT_EQ(kv.second, i);
+    i++;
+  }
+}