Add unit tests for file body

File body needs some unit tests for managing the move constructors.

Tested: Unit tests pass.

Change-Id: Ia640aec75a6f3f85640a50f5dd492638871f9eca
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/test/http/http_file_body_test.cpp b/test/http/http_file_body_test.cpp
new file mode 100644
index 0000000..4eaa93b
--- /dev/null
+++ b/test/http/http_file_body_test.cpp
@@ -0,0 +1,128 @@
+#include "file_test_utilities.hpp"
+#include "http_file_body.hpp"
+
+#include <boost/system/error_code.hpp>
+
+#include <array>
+#include <span>
+#include <string>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using ::testing::ElementsAre;
+
+namespace bmcweb
+{
+namespace
+{
+
+TEST(HttpFileBodyValueType, MoveString)
+{
+    FileBody::value_type value("teststring");
+    // Move constructor
+    FileBody::value_type value2(std::move(value));
+    EXPECT_EQ(value2.encodingType, EncodingType::Raw);
+    EXPECT_EQ(value2.str(), "teststring");
+    EXPECT_EQ(value2.payloadSize(), 10);
+}
+
+TEST(HttpFileBodyValueType, MoveOperatorString)
+{
+    FileBody::value_type value;
+    value.str() = "teststring";
+    // Move constructor
+    FileBody::value_type value2 = std::move(value);
+    EXPECT_EQ(value2.encodingType, EncodingType::Raw);
+    EXPECT_EQ(value2.str(), "teststring");
+    EXPECT_EQ(value2.payloadSize(), 10);
+}
+
+TEST(HttpFileBodyValueType, copysignl)
+{
+    FileBody::value_type value;
+    value.str() = "teststring";
+    // Move constructor
+    FileBody::value_type value2(value);
+    EXPECT_EQ(value2.encodingType, EncodingType::Raw);
+    EXPECT_EQ(value2.str(), "teststring");
+    EXPECT_EQ(value2.payloadSize(), 10);
+}
+
+TEST(HttpFileBodyValueType, CopyOperatorString)
+{
+    FileBody::value_type value;
+    value.str() = "teststring";
+    // Move constructor
+    FileBody::value_type value2 = value;
+    EXPECT_EQ(value2.encodingType, EncodingType::Raw);
+    EXPECT_EQ(value2.str(), "teststring");
+    EXPECT_EQ(value2.payloadSize(), 10);
+}
+
+TEST(HttpFileBodyValueType, MoveFile)
+{
+    FileBody::value_type value(EncodingType::Base64);
+    std::string filepath = makeFile("teststring");
+    boost::system::error_code ec;
+    value.open(filepath.c_str(), boost::beast::file_mode::read, ec);
+    ASSERT_FALSE(ec);
+    // Move constructor
+    FileBody::value_type value2(std::move(value));
+    std::array<char, 11> buffer{};
+    size_t out = value2.file().read(buffer.data(), buffer.size(), ec);
+    ASSERT_FALSE(ec);
+    EXPECT_EQ(value2.encodingType, EncodingType::Base64);
+
+    EXPECT_THAT(std::span(buffer.data(), out),
+                ElementsAre('t', 'e', 's', 't', 's', 't', 'r', 'i', 'n', 'g'));
+
+    EXPECT_THAT(buffer, ElementsAre('t', 'e', 's', 't', 's', 't', 'r', 'i', 'n',
+                                    'g', '\0'));
+
+    EXPECT_EQ(value2.payloadSize(), 16);
+}
+
+TEST(HttpFileBodyValueType, MoveOperatorFile)
+{
+    FileBody::value_type value(EncodingType::Base64);
+    std::string filepath = makeFile("teststring");
+    boost::system::error_code ec;
+    value.open(filepath.c_str(), boost::beast::file_mode::read, ec);
+    ASSERT_FALSE(ec);
+    // Move constructor
+    FileBody::value_type value2 = std::move(value);
+    std::array<char, 11> buffer{};
+    size_t out = value2.file().read(buffer.data(), buffer.size(), ec);
+    ASSERT_FALSE(ec);
+    EXPECT_EQ(value2.encodingType, EncodingType::Base64);
+
+    EXPECT_THAT(std::span(buffer.data(), out),
+                ElementsAre('t', 'e', 's', 't', 's', 't', 'r', 'i', 'n', 'g'));
+    EXPECT_THAT(buffer, ElementsAre('t', 'e', 's', 't', 's', 't', 'r', 'i', 'n',
+                                    'g', '\0'));
+
+    EXPECT_EQ(value2.payloadSize(), 16);
+}
+
+TEST(HttpFileBodyValueType, SetFd)
+{
+    FileBody::value_type value(EncodingType::Base64);
+    std::string filepath = makeFile("teststring");
+
+    boost::system::error_code ec;
+    value.setFd(fileno(fopen(filepath.c_str(), "r")), ec);
+    ASSERT_FALSE(ec);
+
+    std::array<char, 4096> buffer{};
+
+    size_t out = value.file().read(buffer.data(), buffer.size(), ec);
+    ASSERT_FALSE(ec);
+
+    EXPECT_THAT(std::span(buffer.data(), out),
+                ElementsAre('t', 'e', 's', 't', 's', 't', 'r', 'i', 'n', 'g'));
+    EXPECT_EQ(value.payloadSize(), 16);
+}
+
+} // namespace
+} // namespace bmcweb