expr:        `quantity("50Mi").compareTo(quantity("50M"))`,
			expectValue: types.Int(1),
		},
		{
			name:        "add_quantity",
			expr:        `quantity("50k").add(quantity("20")) == quantity("50.02k")`,
			expectValue: trueVal,
		},
		{
			name:        "add_int",
			expr:        `quantity("50k").add(20).isLessThan(quantity("50020"))`,
			expectValue: falseVal,
		},
		{

				`quantity("200M").compareTo(quantity("0.2G")) == 0`:                                                                      4,
				`quantity("50k").add(quantity("20")) == quantity("50.02k")`:                                                              5,
				`quantity("50k").sub(20) == quantity("49980")`:                                                                           4,

			expectEstimatedCost: checker.CostEstimate{Min: 4, Max: 4},
			expectRuntimeCost:   4,
		},
		{
			name:                "add_quantity",
			expr:                `quantity("50k").add(quantity("20")) == quantity("50.02k")`,
			expectEstimatedCost: checker.CostEstimate{Min: 5, Max: 1844674407370955268},
			expectRuntimeCost:   5,
		},
		{
			name:                "sub_quantity",

				`quantity(self.val2).isGreaterThan(quantity("50M"))`,
				`quantity(self.val2).compareTo(quantity("0.2G")) == 0`,
				`quantity("50k").add(quantity(self.val1)) == quantity("50.02k")`,
				`quantity("50k").sub(quantity(self.val1)) == quantity("49980")`,
				`quantity(self.val1).isInteger()`,
			},
		},
		{name: "cost for extended lib calculated correctly: isSorted",