Added tests for check 7.
Const and var init tests for check 8.
Tests for check 9.
Const init tests for check 8.
Array declaration tests for check 10.
Added tests for check 11a.
Tests for check 11b.
Tests for check 12a.
Added tests for check 12b.
Struct tests for check 13a.
Simple test for check 13b.
Tests for check 14a.
More struct tests for 14a-b.