text: // -*- coding: utf-8 -*-
  //  Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com>
  //
  //  Redistribution and use in source and binary forms, with or without
  //  modification, are permitted provided that the following conditions are met:
  //
  //    * Redistributions of source code must retain the above copyright
  //      notice, this list of conditions and the following disclaimer.
  //    * Redistributions in binary form must reproduce the above copyright
  //      notice, this list of conditions and the following disclaimer in the
  //      documentation and/or other materials provided with the distribution.
  //
  //  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  //  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  //  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  //  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  //  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  //  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  //  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  //  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  //  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  //  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  "use strict";
  
  /* eslint-disable no-unused-expressions */
  
  const expect = require("chai").expect;
  const espree = require("./util/espree");
  const analyze = require("..").analyze;
  
  describe("ES6 class", () => {
      it("declaration name creates class scope", () => {
          const ast = espree(`
              class Derived extends Base {
                  constructor() {
                  }
              }
              new Derived();
          `);
  
          const scopeManager = analyze(ast, { ecmaVersion: 6 });
  
          expect(scopeManager.scopes).to.have.length(3);
  
          let scope = scopeManager.scopes[0];
  
          expect(scope.type).to.be.equal("global");
          expect(scope.block.type).to.be.equal("Program");
          expect(scope.isStrict).to.be.false;
          expect(scope.variables).to.have.length(1);
          expect(scope.variables[0].name).to.be.equal("Derived");
          expect(scope.references).to.have.length(2);
          expect(scope.references[0].identifier.name).to.be.equal("Base");
          expect(scope.references[1].identifier.name).to.be.equal("Derived");
  
          scope = scopeManager.scopes[1];
          expect(scope.type).to.be.equal("class");
          expect(scope.block.type).to.be.equal("ClassDeclaration");
          expect(scope.isStrict).to.be.true;
          expect(scope.variables).to.have.length(1);
          expect(scope.variables[0].name).to.be.equal("Derived");
          expect(scope.references).to.have.length(0);
  
          scope = scopeManager.scopes[2];
          expect(scope.type).to.be.equal("function");
          expect(scope.block.type).to.be.equal("FunctionExpression");
          expect(scope.isStrict).to.be.true;
          expect(scope.variables).to.have.length(1);
          expect(scope.variables[0].name).to.be.equal("arguments");
          expect(scope.references).to.have.length(0);
      });
  
      it("expression name creates class scope#1", () => {
          const ast = espree(`
              (class Derived extends Base {
                  constructor() {
                  }
              });
          `);
  
          const scopeManager = analyze(ast, { ecmaVersion: 6 });
  
          expect(scopeManager.scopes).to.have.length(3);
  
          let scope = scopeManager.scopes[0];
  
          expect(scope.type).to.be.equal("global");
          expect(scope.block.type).to.be.equal("Program");
          expect(scope.isStrict).to.be.false;
          expect(scope.variables).to.have.length(0);
          expect(scope.references).to.have.length(1);
          expect(scope.references[0].identifier.name).to.be.equal("Base");
  
          scope = scopeManager.scopes[1];
          expect(scope.type).to.be.equal("class");
          expect(scope.block.type).to.be.equal("ClassExpression");
          expect(scope.isStrict).to.be.true;
          expect(scope.variables).to.have.length(1);
          expect(scope.variables[0].name).to.be.equal("Derived");
          expect(scope.references).to.have.length(0);
  
          scope = scopeManager.scopes[2];
          expect(scope.type).to.be.equal("function");
          expect(scope.block.type).to.be.equal("FunctionExpression");
      });
  
      it("expression name creates class scope#2", () => {
          const ast = espree(`
              (class extends Base {
                  constructor() {
                  }
              });
          `);
  
          const scopeManager = analyze(ast, { ecmaVersion: 6 });
  
          expect(scopeManager.scopes).to.have.length(3);
  
          let scope = scopeManager.scopes[0];
  
          expect(scope.type).to.be.equal("global");
          expect(scope.block.type).to.be.equal("Program");
          expect(scope.isStrict).to.be.false;
          expect(scope.variables).to.have.length(0);
          expect(scope.references).to.have.length(1);
          expect(scope.references[0].identifier.name).to.be.equal("Base");
  
          scope = scopeManager.scopes[1];
          expect(scope.type).to.be.equal("class");
          expect(scope.block.type).to.be.equal("ClassExpression");
  
          scope = scopeManager.scopes[2];
          expect(scope.type).to.be.equal("function");
          expect(scope.block.type).to.be.equal("FunctionExpression");
      });
  
      it("computed property key may refer variables", () => {
          const ast = espree(`
              (function () {
                  var yuyushiki = 42;
                  (class {
                      [yuyushiki]() {
                      }
  
                      [yuyushiki + 40]() {
                      }
                  });
              }());
          `);
  
          const scopeManager = analyze(ast, { ecmaVersion: 6 });
  
          expect(scopeManager.scopes).to.have.length(5);
  
          let scope = scopeManager.scopes[0];
  
          expect(scope.type).to.be.equal("global");
          expect(scope.block.type).to.be.equal("Program");
          expect(scope.isStrict).to.be.false;
  
          scope = scopeManager.scopes[1];
          expect(scope.type).to.be.equal("function");
          expect(scope.block.type).to.be.equal("FunctionExpression");
          expect(scope.isStrict).to.be.false;
          expect(scope.variables).to.have.length(2);
          expect(scope.variables[0].name).to.be.equal("arguments");
          expect(scope.variables[1].name).to.be.equal("yuyushiki");
          expect(scope.references).to.have.length(1);
          expect(scope.references[0].identifier.name).to.be.equal("yuyushiki");
  
          scope = scopeManager.scopes[2];
          expect(scope.type).to.be.equal("class");
          expect(scope.block.type).to.be.equal("ClassExpression");
          expect(scope.isStrict).to.be.true;
          expect(scope.variables).to.have.length(0);
          expect(scope.references).to.have.length(2);
          expect(scope.references[0].identifier.name).to.be.equal("yuyushiki");
          expect(scope.references[1].identifier.name).to.be.equal("yuyushiki");
      });
  
      it("regression #49", () => {
          const ast = espree(`
              class Shoe {
                  constructor() {
                      //Shoe.x = true;
                  }
              }
              let shoe = new Shoe();
          `);
  
          const scopeManager = analyze(ast, { ecmaVersion: 6 });
  
          expect(scopeManager.scopes).to.have.length(3);
  
          const scope = scopeManager.scopes[0];
  
          expect(scope.type).to.be.equal("global");
          expect(scope.block.type).to.be.equal("Program");
          expect(scope.isStrict).to.be.false;
          expect(scope.variables).to.have.length(2);
          expect(scope.variables[0].name).to.be.equal("Shoe");
          expect(scope.variables[1].name).to.be.equal("shoe");
          expect(scope.references).to.have.length(2);
          expect(scope.references[0].identifier.name).to.be.equal("shoe");
          expect(scope.references[1].identifier.name).to.be.equal("Shoe");
      });
  });
  
  // vim: set sw=4 ts=4 et tw=80 :
  