Feat: Unit tests for FileParser

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

@@ -1,8 +1,15 @@
 package edu.ntnu.idi.idatt2003.g40.mappe;
 
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.*;
 
@@ -11,8 +18,43 @@ class FileParserTest {
   private final String filePath = "src/main/resources/dummydata.txt";
   FileParser fileParser;
 
-  @Test
-  void test1() {
+  private final String validStockFromFile = "NVID, Nvidida Corporation, 241.591";
+
+  private final String invalidStockFromFile = "COOLI, This is a cool name, 252.2";
+
+  private final String commentFromFile = "#Above me are some valid formats.";
+
+  private List<String> allLines = new ArrayList<>();
+
+  private List<String> validStocks = new ArrayList<>();
+
+  @BeforeEach
+  void setUp() throws Exception {
     fileParser = new FileParser(filePath);
+    Path path = Paths.get(filePath);
+    allLines = Files.readAllLines(path);
+    try {
+      validStocks = fileParser.readFile();
+    } catch (Exception _) {
+      throw new Exception("Test failed");
+    }
+  }
+
+  @Test
+  void parser_gets_valid_stock_from_file() {
+    assertTrue(allLines.contains(validStockFromFile));
+    assertTrue(validStocks.contains(validStockFromFile));
+  }
+
+  @Test
+  void parser_skips_comments_from_file() {
+    assertTrue(allLines.contains(commentFromFile));
+    assertFalse(validStocks.contains(commentFromFile));
+  }
+
+  @Test
+  void parser_skips_invalid_stock_from_file() {
+    assertTrue(allLines.contains(invalidStockFromFile));
+    assertFalse(validStocks.contains(invalidStockFromFile));
   }
 }