611 lines
22 KiB
JavaScript
611 lines
22 KiB
JavaScript
import {ddescribe, describe, it, xit, iit, expect, beforeEach} from 'angular2/test_lib';
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import {BaseException, isBlank, isPresent} from 'angular2/src/facade/lang';
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import {reflector} from 'angular2/src/reflection/reflection';
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import {MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
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import {Parser} from 'angular2/src/change_detection/parser/parser';
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import {Lexer} from 'angular2/src/change_detection/parser/lexer';
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import {Locals} from 'angular2/src/change_detection/parser/locals';
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import {Pipe, LiteralPrimitive} from 'angular2/src/change_detection/parser/ast';
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class TestData {
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a;
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b;
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fnReturnValue;
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constructor(a, b, fnReturnValue) {
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this.a = a;
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this.b = b;
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this.fnReturnValue = fnReturnValue;
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}
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fn() {
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return this.fnReturnValue;
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}
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add(a, b) {
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return a + b;
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}
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}
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export function main() {
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function td(a = 0, b = 0, fnReturnValue = "constant") {
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return new TestData(a, b, fnReturnValue);
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}
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function createParser() {
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return new Parser(new Lexer(), reflector);
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}
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function parseAction(text, location = null) {
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return createParser().parseAction(text, location);
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}
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function parseBinding(text, location = null) {
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return createParser().parseBinding(text, location);
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}
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function parseTemplateBindings(text, location = null) {
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return createParser().parseTemplateBindings(text, location);
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}
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function parseInterpolation(text, location = null) {
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return createParser().parseInterpolation(text, location);
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}
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function addPipes(ast, pipes) {
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return createParser().addPipes(ast, pipes);
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}
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function emptyLocals() {
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return new Locals(null, MapWrapper.create());
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}
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function expectEval(text, passedInContext = null, passedInLocals = null) {
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var c = isBlank(passedInContext) ? td() : passedInContext;
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var l = isBlank(passedInLocals) ? emptyLocals() : passedInLocals;
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return expect(parseAction(text).eval(c, l));
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}
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function expectEvalError(text, passedInContext = null, passedInLocals = null) {
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var c = isBlank(passedInContext) ? td() : passedInContext;
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var l = isBlank(passedInLocals) ? emptyLocals() : passedInLocals;
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return expect(() => parseAction(text).eval(c, l));
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}
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function evalAsts(asts, passedInContext = null) {
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var c = isBlank(passedInContext) ? td() : passedInContext;
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var res = [];
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for (var i=0; i<asts.length; i++) {
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ListWrapper.push(res, asts[i].eval(c, emptyLocals()));
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}
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return res;
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}
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describe("parser", () => {
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describe("parseAction", () => {
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describe("basic expressions", () => {
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it('should parse numerical expressions', () => {
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expectEval("1").toEqual(1);
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});
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it('should parse strings', () => {
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expectEval("'1'").toEqual('1');
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expectEval('"1"').toEqual('1');
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});
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it('should parse null', () => {
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expectEval("null").toBe(null);
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});
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it('should parse unary - expressions', () => {
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expectEval("-1").toEqual(-1);
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expectEval("+1").toEqual(1);
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});
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it('should parse unary ! expressions', () => {
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expectEval("!true").toEqual(!true);
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expectEval("!!true").toEqual(!!true);
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});
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it('should parse multiplicative expressions', () => {
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expectEval("3*4/2%5").toEqual(3 * 4 / 2 % 5);
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});
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it('should parse additive expressions', () => {
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expectEval("3+6-2").toEqual(3 + 6 - 2);
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});
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it('should parse relational expressions', () => {
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expectEval("2<3").toEqual(2 < 3);
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expectEval("2>3").toEqual(2 > 3);
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expectEval("2<=2").toEqual(2 <= 2);
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expectEval("2>=2").toEqual(2 >= 2);
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});
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it('should parse equality expressions', () => {
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expectEval("2==3").toEqual(2 == 3);
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expectEval("2!=3").toEqual(2 != 3);
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});
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it('should parse logicalAND expressions', () => {
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expectEval("true&&true").toEqual(true && true);
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expectEval("true&&false").toEqual(true && false);
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});
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it('should parse logicalOR expressions', () => {
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expectEval("false||true").toEqual(false || true);
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expectEval("false||false").toEqual(false || false);
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});
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it('should short-circuit AND operator', () => {
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expectEval('false && a()', td(() => {throw "BOOM"})).toBe(false);
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});
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it('should short-circuit OR operator', () => {
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expectEval('true || a()', td(() => {throw "BOOM"})).toBe(true);
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});
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it('should evaluate grouped expressions', () => {
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expectEval("(1+2)*3").toEqual((1+2)*3);
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});
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it('should parse an empty string', () => {
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expectEval('').toBeNull();
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});
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});
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describe("literals", () => {
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it('should evaluate array', () => {
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expectEval("[1][0]").toEqual(1);
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expectEval("[[1]][0][0]").toEqual(1);
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expectEval("[]").toEqual([]);
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expectEval("[].length").toEqual(0);
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expectEval("[1, 2].length").toEqual(2);
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});
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it('should evaluate map', () => {
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expectEval("{}").toEqual({});
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expectEval("{a:'b'}['a']").toEqual('b');
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expectEval("{'a':'b'}['a']").toEqual('b');
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expectEval("{\"a\":'b'}['a']").toEqual('b');
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expectEval("{\"a\":'b'}['a']").toEqual("b");
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expectEval("{}['a']").not.toBeDefined();
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expectEval("{\"a\":'b'}['invalid']").not.toBeDefined();
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});
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it('should only allow identifier, string, or keyword as map key', () => {
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expectEvalError('{(:0}').toThrowError(new RegExp('expected identifier, keyword, or string'));
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expectEvalError('{1234:0}').toThrowError(new RegExp('expected identifier, keyword, or string'));
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});
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});
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describe("member access", () => {
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it("should parse field access", () => {
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expectEval("a", td(999)).toEqual(999);
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expectEval("a.a", td(td(999))).toEqual(999);
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});
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it('should throw when accessing a field on null', () => {
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expectEvalError("a.a.a").toThrowError();
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});
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it('should only allow identifier or keyword as member names', () => {
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expectEvalError('x.(').toThrowError(new RegExp('identifier or keyword'));
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expectEvalError('x. 1234').toThrowError(new RegExp('identifier or keyword'));
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expectEvalError('x."foo"').toThrowError(new RegExp('identifier or keyword'));
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});
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it("should read a field from Locals", () => {
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var locals = new Locals(null,
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MapWrapper.createFromPairs([["key", "value"]]));
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expectEval("key", null, locals).toEqual("value");
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});
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it("should handle nested Locals", () => {
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var nested = new Locals(null,
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MapWrapper.createFromPairs([["key", "value"]]));
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var locals = new Locals(nested, MapWrapper.create());
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expectEval("key", null, locals).toEqual("value");
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});
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it("should fall back to a regular field read when Locals "+
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"does not have the requested field", () => {
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var locals = new Locals(null, MapWrapper.create());
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expectEval("a", td(999), locals).toEqual(999);
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});
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});
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describe("method calls", () => {
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it("should evaluate method calls", () => {
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expectEval("fn()", td(0, 0, "constant")).toEqual("constant");
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expectEval("add(1,2)").toEqual(3);
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expectEval("a.add(1,2)", td(td())).toEqual(3);
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expectEval("fn().add(1,2)", td(0, 0, td())).toEqual(3);
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});
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it('should throw when more than 10 arguments', () => {
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expectEvalError("fn(1,2,3,4,5,6,7,8,9,10,11)").toThrowError(new RegExp('more than'));
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});
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it('should throw when no method', () => {
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expectEvalError("blah()").toThrowError();
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});
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it('should evaluate a method from Locals', () => {
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var locals = new Locals(
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null,
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MapWrapper.createFromPairs([['fn', () => 'child']])
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);
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expectEval("fn()", td(0, 0, 'parent'), locals).toEqual('child');
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});
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it('should fall back to the parent context when Locals does not ' +
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'have the requested method', () => {
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var locals = new Locals(null, MapWrapper.create());
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expectEval("fn()", td(0, 0, 'parent'), locals).toEqual('parent');
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});
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});
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describe("functional calls", () => {
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it("should evaluate function calls", () => {
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expectEval("fn()(1,2)", td(0, 0, (a, b) => a + b)).toEqual(3);
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});
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it('should throw on non-function function calls', () => {
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expectEvalError("4()").toThrowError(new RegExp('4 is not a function'));
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});
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it('should parse functions for object indices', () => {
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expectEval('a[b()]()', td([()=>6], () => 0)).toEqual(6);
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});
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});
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describe("conditional", () => {
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it('should parse ternary/conditional expressions', () => {
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expectEval("7==3+4?10:20").toEqual(10);
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expectEval("false?10:20").toEqual(20);
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});
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it('should throw on incorrect ternary operator syntax', () => {
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expectEvalError("true?1").
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toThrowError(new RegExp('Parser Error: Conditional expression true\\?1 requires all 3 expressions'));
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});
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});
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describe("assignment", () => {
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it("should support field assignments", () => {
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var context = td();
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expectEval("a=12", context).toEqual(12);
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expect(context.a).toEqual(12);
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});
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it("should support nested field assignments", () => {
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var context = td(td(td()));
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expectEval("a.a.a=123;", context).toEqual(123);
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expect(context.a.a.a).toEqual(123);
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});
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it("should support multiple assignments", () => {
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var context = td();
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expectEval("a=123; b=234", context).toEqual(234);
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expect(context.a).toEqual(123);
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expect(context.b).toEqual(234);
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});
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it("should support array updates", () => {
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var context = td([100]);
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expectEval('a[0] = 200', context).toEqual(200);
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expect(context.a[0]).toEqual(200);
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});
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it("should support map updates", () => {
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var context = td({"key" : 100});
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expectEval('a["key"] = 200', context).toEqual(200);
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expect(context.a["key"]).toEqual(200);
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});
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it("should support array/map updates", () => {
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var context = td([{"key" : 100}]);
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expectEval('a[0]["key"] = 200', context).toEqual(200);
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expect(context.a[0]["key"]).toEqual(200);
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});
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it('should allow assignment after array dereference', () => {
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var context = td([td()]);
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expectEval('a[0].a = 200', context).toEqual(200);
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expect(context.a[0].a).toEqual(200);
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});
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it('should throw on bad assignment', () => {
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expectEvalError("5=4").toThrowError(new RegExp("Expression 5 is not assignable"));
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});
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it('should reassign when no variable binding with the given name', () => {
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var context = td();
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var locals = new Locals(null, MapWrapper.create());
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expectEval('a = 200', context, locals).toEqual(200);
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expect(context.a).toEqual(200);
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});
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it('should throw when reassigning a variable binding', () => {
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var locals = new Locals(null, MapWrapper.createFromPairs([["key", "value"]]));
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expectEvalError('key = 200', null, locals).toThrowError(new RegExp("Cannot reassign a variable binding"));
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});
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});
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describe("general error handling", () => {
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it("should throw on an unexpected token", () => {
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expectEvalError("[1,2] trac")
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.toThrowError(new RegExp('Unexpected token \'trac\''));
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});
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it('should throw a reasonable error for unconsumed tokens', () => {
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expectEvalError(")").toThrowError(new RegExp("Unexpected token \\) at column 1 in \\[\\)\\]"));
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});
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it('should throw on missing expected token', () => {
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expectEvalError("a(b").toThrowError(new RegExp("Missing expected \\) at the end of the expression \\[a\\(b\\]"));
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});
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});
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it("should error when using pipes", () => {
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expectEvalError('x|blah').toThrowError(new RegExp('Cannot have a pipe'));
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});
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it('should pass exceptions', () => {
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expect(() => {
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parseAction('a()').eval(td(() => {throw new BaseException("boo to you")}), emptyLocals());
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}).toThrowError('boo to you');
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});
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describe("multiple statements", () => {
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it("should return the last non-blank value", () => {
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expectEval("a=1;b=3;a+b").toEqual(4);
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expectEval("1;;").toEqual(1);
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});
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});
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it('should store the source in the result', () => {
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expect(parseAction('someExpr').source).toBe('someExpr');
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});
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it('should store the passed-in location', () => {
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expect(parseAction('someExpr', 'location').location).toBe('location');
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});
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});
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describe("parseBinding", () => {
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describe("pipes", () => {
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it("should parse pipes", () => {
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var exp = parseBinding("'Foo'|uppercase").ast;
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expect(exp).toBeAnInstanceOf(Pipe);
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expect(exp.name).toEqual("uppercase");
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});
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it("should parse pipes in the middle of a binding", () => {
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var exp = parseBinding("user|a|b.name").ast;
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expect(exp.name).toEqual("name");
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expect(exp.receiver).toBeAnInstanceOf(Pipe);
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expect(exp.receiver.name).toEqual("b");
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expect(exp.receiver.exp).toBeAnInstanceOf(Pipe);
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expect(exp.receiver.exp.name).toEqual("a");
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});
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it("should parse pipes with args", () => {
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var exp = parseBinding("(1|a:2)|b:3").ast;
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expect(exp).toBeAnInstanceOf(Pipe);
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expect(exp.name).toEqual("b");
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expect(exp.args[0]).toBeAnInstanceOf(LiteralPrimitive);
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expect(exp.exp).toBeAnInstanceOf(Pipe);
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expect(exp.exp.name).toEqual("a");
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expect(exp.exp.args[0]).toBeAnInstanceOf(LiteralPrimitive);
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expect(exp.exp.exp).toBeAnInstanceOf(LiteralPrimitive);
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});
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it('should only allow identifier or keyword as formatter names', () => {
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expect(() => parseBinding('"Foo"|(')).toThrowError(new RegExp('identifier or keyword'));
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expect(() => parseBinding('"Foo"|1234')).toThrowError(new RegExp('identifier or keyword'));
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expect(() => parseBinding('"Foo"|"uppercase"')).toThrowError(new RegExp('identifier or keyword'));
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});
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});
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it('should store the source in the result', () => {
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expect(parseBinding('someExpr').source).toBe('someExpr');
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});
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it('should store the passed-in location', () => {
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expect(parseBinding('someExpr', 'location').location).toBe('location');
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});
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it('should throw on chain expressions', () => {
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expect(() => parseBinding("1;2")).toThrowError(new RegExp("contain chained expression"));
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});
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it('should throw on assignmnt', () => {
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expect(() => parseBinding("1;2")).toThrowError(new RegExp("contain chained expression"));
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});
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});
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describe('parseTemplateBindings', () => {
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function keys(templateBindings) {
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return ListWrapper.map(templateBindings, (binding) => binding.key );
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}
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function keyValues(templateBindings) {
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return ListWrapper.map(templateBindings, (binding) => {
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if (binding.keyIsVar) {
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return '#' + binding.key + (isBlank(binding.name) ? '' : '=' + binding.name);
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} else {
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return binding.key + (isBlank(binding.expression) ? '' : `=${binding.expression}`)
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}
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});
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}
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function exprSources(templateBindings) {
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return ListWrapper.map(templateBindings,
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(binding) => isPresent(binding.expression) ? binding.expression.source : null );
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}
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function exprAsts(templateBindings) {
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return ListWrapper.map(templateBindings,
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(binding) => isPresent(binding.expression) ? binding.expression : null );
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}
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it('should parse an empty string', () => {
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var bindings = parseTemplateBindings('');
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expect(bindings).toEqual([]);
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});
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it('should parse a string without a value', () => {
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var bindings = parseTemplateBindings('a');
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expect(keys(bindings)).toEqual(['a']);
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});
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it('should only allow identifier, string, or keyword including dashes as keys', () => {
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var bindings = parseTemplateBindings("a:'b'");
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expect(keys(bindings)).toEqual(['a']);
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bindings = parseTemplateBindings("'a':'b'");
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expect(keys(bindings)).toEqual(['a']);
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bindings = parseTemplateBindings("\"a\":'b'");
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expect(keys(bindings)).toEqual(['a']);
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bindings = parseTemplateBindings("a-b:'c'");
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expect(keys(bindings)).toEqual(['a-b']);
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expect( () => {
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parseTemplateBindings('(:0');
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}).toThrowError(new RegExp('expected identifier, keyword, or string'));
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expect( () => {
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parseTemplateBindings('1234:0');
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}).toThrowError(new RegExp('expected identifier, keyword, or string'));
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});
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it('should detect expressions as value', () => {
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var bindings = parseTemplateBindings("a:b");
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expect(exprSources(bindings)).toEqual(['b']);
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expect(evalAsts(exprAsts(bindings), td(0, 23))).toEqual([23]);
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bindings = parseTemplateBindings("a:1+1");
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expect(exprSources(bindings)).toEqual(['1+1']);
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expect(evalAsts(exprAsts(bindings))).toEqual([2]);
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});
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it('should detect names as value', () => {
|
|
var bindings = parseTemplateBindings("a:#b");
|
|
expect(keyValues(bindings)).toEqual(['a', '#b']);
|
|
});
|
|
|
|
it('should allow space and colon as separators', () => {
|
|
var bindings = parseTemplateBindings("a:b");
|
|
expect(keys(bindings)).toEqual(['a']);
|
|
expect(exprSources(bindings)).toEqual(['b']);
|
|
|
|
bindings = parseTemplateBindings("a b");
|
|
expect(keys(bindings)).toEqual(['a']);
|
|
expect(exprSources(bindings)).toEqual(['b']);
|
|
});
|
|
|
|
it('should allow multiple pairs', () => {
|
|
var bindings = parseTemplateBindings("a 1 b 2");
|
|
expect(keys(bindings)).toEqual(['a', 'b']);
|
|
expect(exprSources(bindings)).toEqual(['1 ', '2']);
|
|
});
|
|
|
|
it('should store the sources in the result', () => {
|
|
var bindings = parseTemplateBindings("a 1,b 2");
|
|
expect(bindings[0].expression.source).toEqual('1');
|
|
expect(bindings[1].expression.source).toEqual('2');
|
|
});
|
|
|
|
it('should store the passed-in location', () => {
|
|
var bindings = parseTemplateBindings("a 1,b 2", 'location');
|
|
expect(bindings[0].expression.location).toEqual('location');
|
|
});
|
|
|
|
it('should support var/# notation', () => {
|
|
var bindings = parseTemplateBindings("var i");
|
|
expect(keyValues(bindings)).toEqual(['#i']);
|
|
|
|
bindings = parseTemplateBindings("#i");
|
|
expect(keyValues(bindings)).toEqual(['#i']);
|
|
|
|
bindings = parseTemplateBindings("var i-a = k-a");
|
|
expect(keyValues(bindings)).toEqual(['#i-a=k-a']);
|
|
|
|
bindings = parseTemplateBindings("keyword var item; var i = k");
|
|
expect(keyValues(bindings)).toEqual(['keyword', '#item=\$implicit', '#i=k']);
|
|
|
|
bindings = parseTemplateBindings("keyword: #item; #i = k");
|
|
expect(keyValues(bindings)).toEqual(['keyword', '#item=\$implicit', '#i=k']);
|
|
|
|
bindings = parseTemplateBindings("directive: var item in expr; var a = b", 'location');
|
|
expect(keyValues(bindings)).toEqual(['directive', '#item=\$implicit', 'in=expr in location', '#a=b']);
|
|
});
|
|
|
|
it('should parse pipes', () => {
|
|
var bindings = parseTemplateBindings('key value|pipe');
|
|
var ast = bindings[0].expression.ast
|
|
expect(ast).toBeAnInstanceOf(Pipe);
|
|
});
|
|
});
|
|
|
|
describe('parseInterpolation', () => {
|
|
it('should return null if no interpolation', () => {
|
|
expect(parseInterpolation('nothing')).toBe(null);
|
|
});
|
|
|
|
it('should parse no prefix/suffix interpolation', () => {
|
|
var ast = parseInterpolation('{{a}}').ast;
|
|
expect(ast.strings).toEqual(['', '']);
|
|
expect(ast.expressions.length).toEqual(1);
|
|
expect(ast.expressions[0].name).toEqual('a');
|
|
});
|
|
|
|
it('should parse prefix/suffix with multiple interpolation', () => {
|
|
var ast = parseInterpolation('before{{a}}middle{{b}}after').ast;
|
|
expect(ast.strings).toEqual(['before', 'middle', 'after']);
|
|
expect(ast.expressions.length).toEqual(2);
|
|
expect(ast.expressions[0].name).toEqual('a');
|
|
expect(ast.expressions[1].name).toEqual('b');
|
|
});
|
|
});
|
|
|
|
describe('addPipes', () => {
|
|
it('should return the given ast whe the list of pipes is empty', () => {
|
|
var ast = parseBinding("1 + 1", "Location");
|
|
var transformedAst = addPipes(ast, []);
|
|
expect(transformedAst).toBe(ast);
|
|
});
|
|
|
|
it('should append pipe ast nodes', () => {
|
|
var ast = parseBinding("1 + 1", "Location");
|
|
var transformedAst = addPipes(ast, ['one', 'two']);
|
|
expect(transformedAst.ast.name).toEqual("two");
|
|
expect(transformedAst.ast.exp.name).toEqual("one");
|
|
expect(transformedAst.ast.exp.exp.operation).toEqual("+");
|
|
});
|
|
|
|
it('should preserve location and source', () => {
|
|
var ast = parseBinding("1 + 1", "Location");
|
|
var transformedAst = addPipes(ast, ['one', 'two']);
|
|
expect(transformedAst.source).toEqual("1 + 1");
|
|
expect(transformedAst.location).toEqual("Location");
|
|
});
|
|
});
|
|
|
|
describe('wrapLiteralPrimitive', () => {
|
|
it('should wrap a literal primitive', () => {
|
|
expect(createParser().wrapLiteralPrimitive("foo", null).eval(null, emptyLocals())).toEqual("foo");
|
|
});
|
|
});
|
|
});
|
|
} |