implemented reader tests

src/test/java/com/auberer/compilerdesignlectureproject/lexer/LexerTest.java

@@ -10,28 +10,10 @@
 
 public class LexerTest {
 
-    private final Path filePath = Path.of("lexer-test.txt");
 
-    private void init() {
-        try {
-            Files.deleteIfExists(filePath);
-            Files.createFile(filePath);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    private void cleanUp() {
-        try {
-            Files.delete(filePath);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
 
     @Test
     public void testLexer() throws Exception {
-        init();
         Reader reader = new Reader(new File("src/test/resources/test.txt"));
         Lexer lexer = new Lexer(reader);
 
@@ -59,7 +41,5 @@ public void testLexer() throws Exception {
         lexer.expect(TokenType.TOK_EOF);
 
         assert lexer.isEOF();
-
-        cleanUp();
     }
 }

src/test/java/com/auberer/compilerdesignlectureproject/reader/ReaderTest.java

@@ -1,5 +1,6 @@
 package com.auberer.compilerdesignlectureproject.reader;
 
+import lombok.Locked;
 import org.junit.Test;
 
 import java.io.File;
@@ -12,31 +13,43 @@ public class ReaderTest {
     @Test
     public void testGetChar() throws FileNotFoundException {
         Reader reader = new Reader(testFile);
-        reader.getChar();
+        reader.advance();
+        assert reader.getChar() == 'i';
+
     }
 
     @Test
     public void testGetCodeLoc() throws FileNotFoundException {
         Reader reader = new Reader(testFile);
-        reader.getCodeLoc();
+        assertCodeLocCorrect(reader, 1L, 1L);
     }
 
     @Test
     public void testAdvance() throws FileNotFoundException {
         Reader reader = new Reader(testFile);
         reader.advance();
+        assertCodeLocCorrect(reader, 1L ,2L);
+        reader.advance();
+        assertCodeLocCorrect(reader, 1L, 3L);
     }
 
     @Test
     public void testExpect() throws FileNotFoundException {
         Reader reader = new Reader(testFile);
-        reader.expect('a');
+        reader.advance();
+        reader.expect('i');
     }
 
     @Test
     public void testIsEOF() throws FileNotFoundException {
         Reader reader = new Reader(testFile);
-        reader.isEOF();
+        do{reader.advance();}
+            while (reader.getChar() != (char) -1);
+        assert reader.isEOF();
+    }
+
+    private static void assertCodeLocCorrect(Reader reader, Long line, Long column){
+        assert reader.getCodeLoc().toString().equals(new CodeLoc(line, column).toString());
     }
 
 }