casePrev() {
        if (this.currentCase <= 0) {
            if (!this.groupPrev()) return false;
            const caseCount = this.testData.groups[this.currentGroup].inputs[0].values.length;
            this.currentCase = caseCount - 1;
            return true;
        }

        this.currentCase--;
        return true;
    }
Validate and go to the previous case