apex-mutation-testing/lib/mutator/boundaryConditionMutator.js

Apex mutation testing plugin

import { BaseListener } from './baseListener.js';
import { TerminalNode } from 'antlr4ts/tree/index.js';
export class BoundaryConditionMutator extends BaseListener {
    REPLACEMENT_MAP = {
        '!=': '==',
        '==': '!=',
        '<': '<=',
        '<=': '<',
        '>': '>=',
        '>=': '>',
        '===': '!==',
        '!==': '===',
    };
    // Target rule
    // expression: expression ('<=' | '>=' | '>' | '<') expression
    enterParExpression(ctx) {
        if (ctx.childCount === 3) {
            const symbol = ctx.getChild(1).getChild(1);
            if (symbol instanceof TerminalNode) {
                const symbolText = symbol.text;
                const replacement = this.REPLACEMENT_MAP[symbolText];
                if (replacement) {
                    this._mutations.push({
                        mutationName: this.constructor.name,
                        token: symbol,
                        replacement,
                    });
                }
            }
        }
    }
}
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