[python] Add matplotlib test WIP

python/test/execution_environment.h

@@ -0,0 +1,15 @@
+#include <python/port/port.h>
+#include <apps/code/app.h>
+
+class TestExecutionEnvironment : public MicroPython::ExecutionEnvironment {
+public:
+  void printText(const char * text, size_t length) override;
+  static constexpr int s_pythonHeapSize = Code::App::k_pythonHeapSize;
+  static char s_pythonHeap[s_pythonHeapSize];
+};
+
+
+// TODO: this will be obsolete when runCode will take a parameter to choose the input type
+void inlineToBeSingleInput(char * buffer, size_t bufferSize, const char * script);
+
+void assert_script_execution_succeeds(const char * script);