Allow conversion from a type T to itself

[folly.git] / folly / test / ConvTest.cpp

diff --git a/folly/test/ConvTest.cpp b/folly/test/ConvTest.cpp
index 31cd9edad5cffe0b05a9428001815f8ebbfbed8e..ad44421bb011f65187a4f29224c1bcf497c33919 100644 (file)
--- a/folly/test/ConvTest.cpp
+++ b/folly/test/ConvTest.cpp
@@ -34,6 +34,36 @@ static uint32_t u32;
 static int64_t s64;
 static uint64_t u64;
 
+// Test to<T>(T)
+TEST(Conv, Type2Type) {
+  int intV = 42;
+  EXPECT_EQ(to<int>(intV), 42);
+
+  float floatV = 4.2;
+  EXPECT_EQ(to<float>(floatV), 4.2f);
+
+  double doubleV = 0.42;
+  EXPECT_EQ(to<double>(doubleV), 0.42);
+
+  std::string stringV = "StdString";
+  EXPECT_EQ(to<std::string>(stringV), "StdString");
+
+  folly::fbstring fbStrV = "FBString";
+  EXPECT_EQ(to<folly::fbstring>(fbStrV), "FBString");
+
+  folly::StringPiece spV("StringPiece");
+  EXPECT_EQ(to<folly::StringPiece>(spV), "StringPiece");
+
+  // Rvalues
+  EXPECT_EQ(to<int>(42), 42);
+  EXPECT_EQ(to<float>(4.2f), 4.2f);
+  EXPECT_EQ(to<double>(.42), .42);
+  EXPECT_EQ(to<std::string>(std::string("Hello")), "Hello");
+  EXPECT_EQ(to<folly::fbstring>(folly::fbstring("hello")), "hello");
+  EXPECT_EQ(to<folly::StringPiece>(folly::StringPiece("Forty Two")),
+            "Forty Two");
+}
+
 TEST(Conv, Integral2Integral) {
   // Same size, different signs
   s64 = numeric_limits<uint8_t>::max();