Adding basic tests for 'Print::getWriteError'

Author: aentinger

Diff for: test/CMakeLists.txt

@@ -28,6 +28,7 @@ set(TEST_SRCS
   src/Common/test_makeWord.cpp
   src/Common/test_max.cpp
   src/Common/test_min.cpp
+  src/Print/test_getWriteError.cpp
   src/Print/test_print.cpp
   src/Ringbuffer/test_available.cpp
   src/Ringbuffer/test_availableForStore.cpp

Diff for: test/include/PrintMock.h

@@ -22,6 +22,8 @@ class PrintMock : public Print
 public:
   std::string _str;
   virtual size_t write(uint8_t b) override;
+  void mock_setWriteError() { setWriteError(); }
+  void mock_setWriteError(int err) { setWriteError(err); }
 };
 
 #endif /* PRINT_MOCK_H_ */

Diff for: test/src/Print/test_getWriteError.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020 Arduino.  All rights reserved.
+ */
+
+/**************************************************************************************
+ * INCLUDE
+ **************************************************************************************/
+
+#include <catch.hpp>
+
+#include <Print.h>
+
+#include <PrintMock.h>
+
+/**************************************************************************************
+ * TEST CODE
+ **************************************************************************************/
+
+TEST_CASE ("No write error has been set", "[Print-getWriteError-01]")
+{
+  PrintMock mock;
+  REQUIRE(mock.getWriteError() == 0);
+}
+
+TEST_CASE ("A write error has been set", "[Print-getWriteError-02]")
+{
+  PrintMock mock;
+  mock.mock_setWriteError(5);
+  REQUIRE(mock.getWriteError() == 5);
+}

Diff for: test/src/Print/test_print.cpp

@@ -8,8 +8,6 @@
 
 #include <catch.hpp>
 
-#include <string>
-
 #include <Print.h>
 
 #include <PrintMock.h>