Test: Added unit testing for file converter

src/test/java/edu/ntnu/idi/idatt2003/g40/mappe/FileConverterTest.java

@@ -0,0 +1,74 @@
+package edu.ntnu.idi.idatt2003.g40.mappe;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class FileConverterTest {
+
+  private FileConverter converter;
+
+  private String validStockAsString1;
+  private String validStockAsString2;
+  private String validStockAsString3;
+  private ArrayList<String> allStocks;
+  private String invalidStockAsString1;
+
+  @BeforeEach
+  void setUp() {
+    validStockAsString1 = "AAPL, Apple inc., 251.42";
+    validStockAsString2 = "NVID, Nvidia corp., 100.25";
+    validStockAsString3 = "SAMS, Samsung corporation, 103.21";
+
+    invalidStockAsString1 = "INVALID, This stock has an invalid code!, 100.21";
+
+    allStocks = new ArrayList<>();
+
+    allStocks.add(validStockAsString1);
+    allStocks.add(validStockAsString2);
+    allStocks.add(validStockAsString3);
+    allStocks.add(invalidStockAsString1);
+
+    converter = new FileConverter();
+  }
+
+  @Test
+  void converter_returns_valid_stock_apple() {
+
+    boolean stockIncluded = false;
+
+    List<Stock> stocksFromConverter = converter.getStocksFromStrings(allStocks);
+
+    for (Stock s : stocksFromConverter) {
+      if (s.getSymbol().equals("AAPL")) {
+        stockIncluded = true;
+        break;
+      }
+    }
+
+    Assertions.assertTrue(stockIncluded);
+  }
+
+  @Test
+  void converter_ignores_invalid_stock_representation() {
+
+    boolean stockIncluded = false;
+
+    List<Stock> stocksFromConverter = converter.getStocksFromStrings(allStocks);
+
+    for (Stock s : stocksFromConverter) {
+      if (s.getSymbol().equals("INVALID")) {
+        stockIncluded = true;
+        break;
+      }
+    }
+
+    Assertions.assertFalse(stockIncluded);
+  }
+}