Squashed 'externals/fmt/' content from commit 39834389

git-subtree-dir: externals/fmt
git-subtree-split: 398343897f98b88ade80bbebdcbe82a36c65a980

test/string-test.cc

@@ -0,0 +1,80 @@
+/*
+ Tests of string utilities
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+#include "fmt/string.h"
+#include "gtest/gtest.h"
+
+using fmt::internal::StringBuffer;
+
+TEST(StringBufferTest, Empty) {
+  StringBuffer<char> buffer;
+  EXPECT_EQ(0u, buffer.size());
+  EXPECT_EQ(0u, buffer.capacity());
+  std::string data;
+  // std::string may have initial capacity.
+  std::size_t capacity = data.capacity();
+  buffer.move_to(data);
+  EXPECT_EQ("", data);
+  EXPECT_EQ(capacity, data.capacity());
+}
+
+TEST(StringBufferTest, Reserve) {
+  StringBuffer<char> buffer;
+  std::size_t capacity = std::string().capacity() + 10;
+  buffer.reserve(capacity);
+  EXPECT_EQ(0u, buffer.size());
+  EXPECT_EQ(capacity, buffer.capacity());
+  std::string data;
+  buffer.move_to(data);
+  EXPECT_EQ("", data);
+}
+
+TEST(StringBufferTest, Resize) {
+  StringBuffer<char> buffer;
+  std::size_t size = std::string().capacity() + 10;
+  buffer.resize(size);
+  EXPECT_EQ(size, buffer.size());
+  EXPECT_EQ(size, buffer.capacity());
+  std::string data;
+  buffer.move_to(data);
+  EXPECT_EQ(size, data.size());
+}
+
+TEST(StringBufferTest, MoveTo) {
+  StringBuffer<char> buffer;
+  std::size_t size = std::string().capacity() + 10;
+  buffer.resize(size);
+  const char *p = &buffer[0];
+  std::string data;
+  buffer.move_to(data);
+  EXPECT_EQ(p, &data[0]);
+  EXPECT_EQ(0u, buffer.size());
+  EXPECT_EQ(0u, buffer.capacity());
+}
+
+TEST(StringWriterTest, MoveTo) {
+  fmt::StringWriter out;
+  out << "The answer is " << 42 << "\n";
+  std::string s;
+  out.move_to(s);
+  EXPECT_EQ("The answer is 42\n", s);
+  EXPECT_EQ(0u, out.size());
+}
+
+TEST(StringWriterTest, WString) {
+  fmt::WStringWriter out;
+  out << "The answer is " << 42 << "\n";
+  std::wstring s;
+  out.move_to(s);
+  EXPECT_EQ(L"The answer is 42\n", s);
+}
+
+TEST(StringTest, ToString) {
+  EXPECT_EQ("42", fmt::to_string(42));
+}