Unskip all typechecker test cases

Author: bryanlohxz

src/types/checker/__tests__/assignStatements.test.ts

@@ -25,8 +25,7 @@ const testcases: {
       int test = 0;
       test = 1;
     `,
-    result: { type: null, errors: [] },
-    only: true
+    result: { type: null, errors: [] }
   },
   {
     input: `

src/types/checker/__tests__/forStatements.test.ts

@@ -64,6 +64,13 @@ const testcases: {
       for (int i = 0; i < 10; i++) {}
     `,
     result: { type: null, errors: [new VariableAlreadyDefinedError()] }
+  },
+  {
+    input: `
+      int[] arr = {1, 2, 3, 4, 5};
+      for (int i = 0; i < arr.length; i++) {}
+    `,
+    result: { type: null, errors: [] }
   }
 ]
 

src/types/checker/__tests__/localVariableDeclarationStatement.test.ts

@@ -45,8 +45,7 @@ const testcases: {
     result: {
       type: null,
       errors: [new IncompatibleTypesError(), new IncompatibleTypesError()]
-    },
-    only: true
+    }
   }
 ]
 

src/types/checker/__tests__/methodInvocation.test.ts

@@ -67,8 +67,7 @@ const testcases: {
       public static void main(String[] args) { int test = getStringLength("Hello World!"); }
       public static String getStringLength(String input) { return input; }
     `,
-    result: { type: null, errors: [new IncompatibleTypesError()] },
-    only: true
+    result: { type: null, errors: [new IncompatibleTypesError()] }
   },
   {
     input: `