229 lines
10 KiB
TypeScript
229 lines
10 KiB
TypeScript
import * as fs from 'fs';
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import * as ts from 'typescript';
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import {Evaluator} from '../src/evaluator';
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import {Symbols} from '../src/symbols';
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import {Directory, Host, expectNoDiagnostics, findVar} from './typescript.mocks';
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describe('Evaluator', () => {
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let host: ts.LanguageServiceHost;
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let service: ts.LanguageService;
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let program: ts.Program;
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let typeChecker: ts.TypeChecker;
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let symbols: Symbols;
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let evaluator: Evaluator;
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beforeEach(() => {
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host = new Host(FILES, [
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'expressions.ts', 'consts.ts', 'const_expr.ts', 'forwardRef.ts', 'classes.ts',
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'newExpression.ts'
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]);
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service = ts.createLanguageService(host);
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program = service.getProgram();
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typeChecker = program.getTypeChecker();
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symbols = new Symbols(null);
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evaluator = new Evaluator(symbols);
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});
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it('should not have typescript errors in test data', () => {
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expectNoDiagnostics(service.getCompilerOptionsDiagnostics());
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for (const sourceFile of program.getSourceFiles()) {
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expectNoDiagnostics(service.getSyntacticDiagnostics(sourceFile.fileName));
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expectNoDiagnostics(service.getSemanticDiagnostics(sourceFile.fileName));
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}
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});
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it('should be able to fold literal expressions', () => {
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var consts = program.getSourceFile('consts.ts');
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expect(evaluator.isFoldable(findVar(consts, 'someName').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(consts, 'someBool').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(consts, 'one').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(consts, 'two').initializer)).toBeTruthy();
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});
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it('should be able to fold expressions with foldable references', () => {
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var expressions = program.getSourceFile('expressions.ts');
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expect(evaluator.isFoldable(findVar(expressions, 'three').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(expressions, 'four').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(expressions, 'obj').initializer)).toBeTruthy();
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expect(evaluator.isFoldable(findVar(expressions, 'arr').initializer)).toBeTruthy();
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});
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it('should be able to evaluate literal expressions', () => {
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var consts = program.getSourceFile('consts.ts');
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expect(evaluator.evaluateNode(findVar(consts, 'someName').initializer)).toBe('some-name');
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expect(evaluator.evaluateNode(findVar(consts, 'someBool').initializer)).toBe(true);
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expect(evaluator.evaluateNode(findVar(consts, 'one').initializer)).toBe(1);
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expect(evaluator.evaluateNode(findVar(consts, 'two').initializer)).toBe(2);
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});
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it('should be able to evaluate expressions', () => {
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var expressions = program.getSourceFile('expressions.ts');
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symbols.define('someName', 'some-name');
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symbols.define('someBool', true);
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symbols.define('one', 1);
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symbols.define('two', 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'three').initializer)).toBe(3);
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symbols.define('three', 3);
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expect(evaluator.evaluateNode(findVar(expressions, 'four').initializer)).toBe(4);
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symbols.define('four', 4);
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expect(evaluator.evaluateNode(findVar(expressions, 'obj').initializer))
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.toEqual({one: 1, two: 2, three: 3, four: 4});
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expect(evaluator.evaluateNode(findVar(expressions, 'arr').initializer)).toEqual([1, 2, 3, 4]);
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expect(evaluator.evaluateNode(findVar(expressions, 'bTrue').initializer)).toEqual(true);
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expect(evaluator.evaluateNode(findVar(expressions, 'bFalse').initializer)).toEqual(false);
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expect(evaluator.evaluateNode(findVar(expressions, 'bAnd').initializer)).toEqual(true);
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expect(evaluator.evaluateNode(findVar(expressions, 'bOr').initializer)).toEqual(true);
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expect(evaluator.evaluateNode(findVar(expressions, 'nDiv').initializer)).toEqual(2);
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expect(evaluator.evaluateNode(findVar(expressions, 'nMod').initializer)).toEqual(1);
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expect(evaluator.evaluateNode(findVar(expressions, 'bLOr').initializer)).toEqual(false || true);
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expect(evaluator.evaluateNode(findVar(expressions, 'bLAnd').initializer)).toEqual(true && true);
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expect(evaluator.evaluateNode(findVar(expressions, 'bBOr').initializer)).toEqual(0x11 | 0x22);
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expect(evaluator.evaluateNode(findVar(expressions, 'bBAnd').initializer)).toEqual(0x11 & 0x03);
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expect(evaluator.evaluateNode(findVar(expressions, 'bXor').initializer)).toEqual(0x11 ^ 0x21);
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expect(evaluator.evaluateNode(findVar(expressions, 'bEqual').initializer))
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.toEqual(1 == <any>'1');
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expect(evaluator.evaluateNode(findVar(expressions, 'bNotEqual').initializer))
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.toEqual(1 != <any>'1');
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expect(evaluator.evaluateNode(findVar(expressions, 'bIdentical').initializer))
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.toEqual(1 === <any>'1');
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expect(evaluator.evaluateNode(findVar(expressions, 'bNotIdentical').initializer))
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.toEqual(1 !== <any>'1');
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expect(evaluator.evaluateNode(findVar(expressions, 'bLessThan').initializer)).toEqual(1 < 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bGreaterThan').initializer)).toEqual(1 > 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bLessThanEqual').initializer))
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.toEqual(1 <= 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bGreaterThanEqual').initializer))
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.toEqual(1 >= 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bShiftLeft').initializer)).toEqual(1 << 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bShiftRight').initializer))
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.toEqual(-1 >> 2);
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expect(evaluator.evaluateNode(findVar(expressions, 'bShiftRightU').initializer))
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.toEqual(-1 >>> 2);
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});
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it('should report recursive references as symbolic', () => {
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var expressions = program.getSourceFile('expressions.ts');
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expect(evaluator.evaluateNode(findVar(expressions, 'recursiveA').initializer))
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.toEqual({__symbolic: 'reference', name: 'recursiveB'});
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expect(evaluator.evaluateNode(findVar(expressions, 'recursiveB').initializer))
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.toEqual({__symbolic: 'reference', name: 'recursiveA'});
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});
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it('should correctly handle special cases for CONST_EXPR', () => {
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var const_expr = program.getSourceFile('const_expr.ts');
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expect(evaluator.evaluateNode(findVar(const_expr, 'bTrue').initializer)).toEqual(true);
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expect(evaluator.evaluateNode(findVar(const_expr, 'bFalse').initializer)).toEqual(false);
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});
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it('should resolve a forwardRef', () => {
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var forwardRef = program.getSourceFile('forwardRef.ts');
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expect(evaluator.evaluateNode(findVar(forwardRef, 'bTrue').initializer)).toEqual(true);
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expect(evaluator.evaluateNode(findVar(forwardRef, 'bFalse').initializer)).toEqual(false);
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});
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it('should return new expressions', () => {
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symbols.define('Value', {__symbolic: 'reference', module: './classes', name: 'Value'});
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evaluator = new Evaluator(symbols);
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var newExpression = program.getSourceFile('newExpression.ts');
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expect(evaluator.evaluateNode(findVar(newExpression, 'someValue').initializer)).toEqual({
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__symbolic: 'new',
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expression: {__symbolic: 'reference', name: 'Value', module: './classes'},
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arguments: ['name', 12]
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});
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expect(evaluator.evaluateNode(findVar(newExpression, 'complex').initializer)).toEqual({
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__symbolic: 'new',
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expression: {__symbolic: 'reference', name: 'Value', module: './classes'},
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arguments: ['name', 12]
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});
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});
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});
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const FILES: Directory = {
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'directives.ts': `
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export function Pipe(options: { name?: string, pure?: boolean}) {
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return function(fn: Function) { }
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}
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`,
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'classes.ts': `
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export class Value {
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constructor(public name: string, public value: any) {}
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}
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`,
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'consts.ts': `
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export var someName = 'some-name';
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export var someBool = true;
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export var one = 1;
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export var two = 2;
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`,
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'expressions.ts': `
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export var someName = 'some-name';
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export var someBool = true;
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export var one = 1;
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export var two = 2;
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export var three = one + two;
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export var four = two * two;
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export var obj = { one: one, two: two, three: three, four: four };
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export var arr = [one, two, three, four];
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export var bTrue = someBool;
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export var bFalse = !someBool;
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export var bAnd = someBool && someBool;
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export var bOr = someBool || someBool;
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export var nDiv = four / two;
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export var nMod = (four + one) % two;
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export var bLOr = false || true; // true
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export var bLAnd = true && true; // true
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export var bBOr = 0x11 | 0x22; // 0x33
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export var bBAnd = 0x11 & 0x03; // 0x01
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export var bXor = 0x11 ^ 0x21; // 0x20
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export var bEqual = 1 == <any>"1"; // true
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export var bNotEqual = 1 != <any>"1"; // false
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export var bIdentical = 1 === <any>"1"; // false
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export var bNotIdentical = 1 !== <any>"1"; // true
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export var bLessThan = 1 < 2; // true
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export var bGreaterThan = 1 > 2; // false
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export var bLessThanEqual = 1 <= 2; // true
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export var bGreaterThanEqual = 1 >= 2; // false
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export var bShiftLeft = 1 << 2; // 0x04
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export var bShiftRight = -1 >> 2; // -1
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export var bShiftRightU = -1 >>> 2; // 0x3fffffff
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export var recursiveA = recursiveB;
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export var recursiveB = recursiveA;
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`,
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'A.ts': `
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import {Pipe} from './directives';
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@Pipe({name: 'A', pure: false})
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export class A {}`,
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'B.ts': `
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import {Pipe} from './directives';
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import {someName, someBool} from './consts';
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@Pipe({name: someName, pure: someBool})
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export class B {}`,
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'const_expr.ts': `
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function CONST_EXPR(value: any) { return value; }
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export var bTrue = CONST_EXPR(true);
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export var bFalse = CONST_EXPR(false);
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`,
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'forwardRef.ts': `
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function forwardRef(value: any) { return value; }
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export var bTrue = forwardRef(() => true);
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export var bFalse = forwardRef(() => false);
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`,
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'newExpression.ts': `
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import {Value} from './classes';
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function CONST_EXPR(value: any) { return value; }
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function forwardRef(value: any) { return value; }
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export const someValue = new Value("name", 12);
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export const complex = CONST_EXPR(new Value("name", forwardRef(() => 12)));
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`
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};
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