Make C++ test names more consistent (#3586)

Inconsistent names were found using the following regular expressions.

* `rg "TEST(_F|_P)?\(\w+,\s+\w+Test\)"`
* `rg "TEST(_F|_P)?\(\w+,\s+Test\w+\)"`
* `rg "TEST(_F|_P)?\(\w+Tests,\s+\w+\)"`

Fixes #3495.

hal/src/test/native/cpp/HALTest.cpp

@@ -0,0 +1,12 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#include "gtest/gtest.h"
+#include "hal/HAL.h"
+
+namespace hal {
+TEST(HALTest, RuntimeType) {
+  EXPECT_EQ(HAL_RuntimeType::HAL_Runtime_Simulation, HAL_GetRuntimeType());
+}
+}  // namespace hal