Skip tests for division and unary operators

test.bats

@@ -46,16 +46,19 @@
 }
 
 @test "Minus unary operand" {
+        skip "Feature not implemented"
 	result="$(echo '-4=' | ./eval.out)"
 	[ "$result" = "-4" ]
 }
 
 @test "Basic division" {
+        skip "Feature not implemented"
 	result="$(echo '42 / 7 =' | ./eval.out)"
 	[ "$result" = "6" ]
 }
 
 @test "Basic truncated division" {
+        skip "Feature not implemented"
 	result="$(echo '16 / 3 =' | ./eval.out)"
 	[ "$result" = "5" ]
 }