66 lines
1.5 KiB
JavaScript
66 lines
1.5 KiB
JavaScript
const traverse = require("../lib").default;
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const assert = require("assert");
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const parse = require("babylon").parse;
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describe("path/ancestry", function () {
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describe("isAncestor", function () {
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const ast = parse("var a = 1; 'a';");
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it("returns true if ancestor", function() {
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const paths = [];
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traverse(ast, {
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"Program|NumericLiteral"(path) {
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paths.push(path);
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},
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});
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const [ programPath, numberPath ] = paths;
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assert(programPath.isAncestor(numberPath));
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});
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it("returns false if not ancestor", function() {
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const paths = [];
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traverse(ast, {
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"Program|NumericLiteral|StringLiteral"(path) {
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paths.push(path);
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},
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});
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const [ , numberPath, stringPath ] = paths;
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assert(!stringPath.isAncestor(numberPath));
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});
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});
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describe("isDescendant", function () {
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const ast = parse("var a = 1; 'a';");
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it("returns true if descendant", function() {
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const paths = [];
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traverse(ast, {
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"Program|NumericLiteral"(path) {
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paths.push(path);
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},
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});
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const [ programPath, numberPath ] = paths;
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assert(numberPath.isDescendant(programPath));
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});
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it("returns false if not descendant", function() {
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const paths = [];
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traverse(ast, {
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"Program|NumericLiteral|StringLiteral"(path) {
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paths.push(path);
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},
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});
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const [ , numberPath, stringPath ] = paths;
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assert(!numberPath.isDescendant(stringPath));
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});
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});
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});
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