diff --git a/neuralNetworkTests.c b/neuralNetworkTests.c
index 21ab370..cb7dcd9 100644
--- a/neuralNetworkTests.c
+++ b/neuralNetworkTests.c
@@ -9,6 +9,12 @@
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {
     // TODO
+	FILE file = fopen(path, "wb");
+	fwrite(path, sizeof(const char), 24, file);
+	for(int i = 0; i < nn.numberOfLayers; i++) {
+		fwrite(nn.layers[i].weights.buffer, sizeof(MatrixType), nn.layers[i].weights.rows * nn.layers[i].weights.cols, file);
+		fwrite(nn.layers[i].biases.buffer, sizeof(MatrixType), nn.layers[i].biases.rows * nn.layers[i].biases.cols, file);
+		fwrite(nn.layers[i].activation->buffer, sizeof(MatrixType), nn.layers[i].activation->rows * nn.layers[i].activation->cols, file);
 }
 
 void test_loadModelReturnsCorrectNumberOfLayers(void)