80 lines
1.9 KiB
JavaScript
80 lines
1.9 KiB
JavaScript
import { parse } from "@babel/parser";
|
|
|
|
import _traverse from "../lib/index.js";
|
|
const traverse = _traverse.default;
|
|
|
|
describe("path/ancestry", function () {
|
|
describe("isAncestor", function () {
|
|
const ast = parse("var a = 1; 'a';");
|
|
|
|
it("returns true if ancestor", function () {
|
|
const paths = [];
|
|
traverse(ast, {
|
|
"Program|NumericLiteral"(path) {
|
|
paths.push(path);
|
|
},
|
|
});
|
|
|
|
const [programPath, numberPath] = paths;
|
|
|
|
expect(programPath.isAncestor(numberPath)).toBeTruthy();
|
|
});
|
|
|
|
it("returns false if not ancestor", function () {
|
|
const paths = [];
|
|
traverse(ast, {
|
|
"Program|NumericLiteral|StringLiteral"(path) {
|
|
paths.push(path);
|
|
},
|
|
});
|
|
|
|
const [, numberPath, stringPath] = paths;
|
|
|
|
expect(stringPath.isAncestor(numberPath)).toBeFalsy();
|
|
});
|
|
});
|
|
|
|
describe("isDescendant", function () {
|
|
const ast = parse("var a = 1; 'a';");
|
|
|
|
it("returns true if descendant", function () {
|
|
const paths = [];
|
|
traverse(ast, {
|
|
"Program|NumericLiteral"(path) {
|
|
paths.push(path);
|
|
},
|
|
});
|
|
|
|
const [programPath, numberPath] = paths;
|
|
|
|
expect(numberPath.isDescendant(programPath)).toBeTruthy();
|
|
});
|
|
|
|
it("returns false if not descendant", function () {
|
|
const paths = [];
|
|
traverse(ast, {
|
|
"Program|NumericLiteral|StringLiteral"(path) {
|
|
paths.push(path);
|
|
},
|
|
});
|
|
|
|
const [, numberPath, stringPath] = paths;
|
|
|
|
expect(numberPath.isDescendant(stringPath)).toBeFalsy();
|
|
});
|
|
});
|
|
|
|
describe("getStatementParent", function () {
|
|
const ast = parse("var a = 1;");
|
|
it("should throw", function () {
|
|
expect(function () {
|
|
traverse(ast, {
|
|
Program(path) {
|
|
path.getStatementParent();
|
|
},
|
|
});
|
|
}).toThrow(/File\/Program node/);
|
|
});
|
|
});
|
|
});
|