Adding StreamMock class to test functions of Stream base class as well as test code for Stream::getTimeout()

Author: aentinger

Diff for: test/CMakeLists.txt

@@ -47,6 +47,7 @@ set(TEST_SRCS
   src/Ringbuffer/test_peek.cpp
   src/Ringbuffer/test_read_char.cpp
   src/Ringbuffer/test_store_char.cpp
+  src/Stream/test_getTimeout.cpp
   src/String/test_concat.cpp
   src/String/test_operators.cpp
   src/String/test_compareTo.cpp

Diff for: test/include/StreamMock.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2020 Arduino.  All rights reserved.
+ */
+
+#ifndef STREAM_MOCK_H_
+#define STREAM_MOCK_H_
+
+/**************************************************************************************
+ * INCLUDE
+ **************************************************************************************/
+
+#include <sstream>
+
+#include <Stream.h>
+
+/**************************************************************************************
+ * CLASS DECLARATION
+ **************************************************************************************/
+
+class StreamMock : public arduino::Stream
+{
+public:
+  std::stringstream _ss;
+
+  virtual size_t write(uint8_t ch) override { _ss << static_cast<char>(ch); return 1; }
+  virtual int available() override { return _ss.gcount(); }
+  virtual int read() override
+  {
+    char ch;
+    _ss >> ch;
+    return ch;
+  }
+  virtual int peek() override
+  {
+    char ch = _ss.peek();
+    return ch;
+  }
+};
+
+#endif /* STREAM_MOCK_H_ */

Diff for: test/src/Stream/test_getTimeout.cpp

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2020 Arduino.  All rights reserved.
+ */
+
+/**************************************************************************************
+ * INCLUDE
+ **************************************************************************************/
+
+#include <catch.hpp>
+
+#include <StreamMock.h>
+
+/**************************************************************************************
+ * TEST CODE
+ **************************************************************************************/
+
+TEST_CASE ("Verifying if default timeout is returned correctly", "[Stream-getTimeout-01]")
+{
+  StreamMock mock;
+  REQUIRE(mock.getTimeout() == 1000);
+}