Removed Polymer from Observatory deps

packages/polymer_expressions/test/parser_test.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library parser_test;
-
-import 'package:polymer_expressions/parser.dart';
-import 'package:polymer_expressions/expression.dart';
-import 'package:unittest/unittest.dart';
-
-expectParse(String s, Expression e) =>
-    expect(new Parser(s).parse(), e, reason: s);
-
-final Matcher throwsParseException =
-    throwsA(new isInstanceOf<ParseException>('ParseException'));
-
-main() {
-
-  group('parser', () {
-
-    test('should parse an empty expression', () {
-      expectParse('', empty());
-    });
-
-    test('should parse an identifier', () {
-      expectParse('abc', ident('abc'));
-    });
-
-    test('should parse a string literal', () {
-      expectParse('"abc"', literal('abc'));
-    });
-
-    test('should parse a bool literal', () {
-      expectParse('true', literal(true));
-      expectParse('false', literal(false));
-    });
-
-    test('should parse a null literal', () {
-      expectParse('null', literal(null));
-    });
-
-    test('should parse an integer literal', () {
-      expectParse('123', literal(123));
-    });
-
-    test('should parse a double literal', () {
-      expectParse('1.23', literal(1.23));
-    });
-
-    test('should parse a positive double literal', () {
-      expectParse('+1.23', literal(1.23));
-    });
-
-    test('should parse a negative double literal', () {
-      expectParse('-1.23', literal(-1.23));
-    });
-
-    test('should parse binary operators', () {
-      var operators = ['+', '-', '*', '/', '%', '^', '==', '!=', '>', '<',
-          '>=', '<=', '||', '&&', '&', '===', '!==', '|'];
-      for (var op in operators) {
-        expectParse('a $op b', binary(ident('a'), op, ident('b')));
-        expectParse('1 $op 2', binary(literal(1), op, literal(2)));
-        expectParse('this $op null', binary(ident('this'), op, literal(null)));
-      }
-    });
-
-    test('should thrown on unknown operators', () {
-      expect(() => parse('a ?? b'), throwsParseException);
-      expect(() => parse('a &&& b'), throwsParseException);
-      expect(() => parse('a ==== b'), throwsParseException);
-    });
-
-    test('should give multiply higher associativity than plus', () {
-      expectParse('a + b * c',
-          binary(ident('a'), '+', binary(ident('b'), '*', ident('c'))));
-      expectParse('a * b + c',
-          binary(binary(ident('a'), '*', ident('b')), '+', ident('c')));
-    });
-
-    test('should parse a dot operator', () {
-      expectParse('a.b', getter(ident('a'), 'b'));
-    });
-
-    test('should parse chained dot operators', () {
-      expectParse('a.b.c', getter(getter(ident('a'), 'b'), 'c'));
-    });
-
-    test('should give dot high associativity', () {
-      expectParse('a * b.c', binary(ident('a'), '*', getter(ident('b'), 'c')));
-    });
-
-    test('should parse a function with no arguments', () {
-      expectParse('a()', invoke(ident('a'), null, []));
-    });
-
-    test('should parse a single function argument', () {
-      expectParse('a(b)', invoke(ident('a'), null, [ident('b')]));
-    });
-
-    test('should parse a function call as a subexpression', () {
-      expectParse('a() + 1',
-          binary(
-              invoke(ident('a'), null, []),
-              '+',
-              literal(1)));
-    });
-
-    test('should parse multiple function arguments', () {
-      expectParse('a(b, c)',
-          invoke(ident('a'), null, [ident('b'), ident('c')]));
-    });
-
-    test('should parse nested function calls', () {
-      expectParse('a(b(c))', invoke(ident('a'), null, [
-          invoke(ident('b'), null, [ident('c')])]));
-    });
-
-    test('should parse an empty method call', () {
-      expectParse('a.b()', invoke(ident('a'), 'b', []));
-    });
-
-    test('should parse a method call with a single argument', () {
-      expectParse('a.b(c)', invoke(ident('a'), 'b', [ident('c')]));
-    });
-
-    test('should parse a method call with multiple arguments', () {
-      expectParse('a.b(c, d)',
-          invoke(ident('a'), 'b', [ident('c'), ident('d')]));
-    });
-
-    test('should parse chained method calls', () {
-      expectParse('a.b().c()', invoke(invoke(ident('a'), 'b', []), 'c', []));
-    });
-
-    test('should parse chained function calls', () {
-      expectParse('a()()', invoke(invoke(ident('a'), null, []), null, []));
-    });
-
-    test('should parse parenthesized expression', () {
-      expectParse('(a)', paren(ident('a')));
-      expectParse('(( 3 * ((1 + 2)) ))', paren(paren(
-          binary(literal(3), '*', paren(paren(
-              binary(literal(1), '+', literal(2))))))));
-    });
-
-    test('should parse an index operator', () {
-      expectParse('a[b]', index(ident('a'), ident('b')));
-      expectParse('a.b[c]', index(getter(ident('a'), 'b'), ident('c')));
-    });
-
-    test('should parse chained index operators', () {
-      expectParse('a[][]', index(index(ident('a'), null), null));
-    });
-
-    test('should parse multiple index operators', () {
-      expectParse('a[b] + c[d]', binary(
-          index(ident('a'), ident('b')),
-          '+',
-          index(ident('c'), ident('d'))));
-    });
-
-    test('should parse ternary operators', () {
-      expectParse('a ? b : c', ternary(ident('a'), ident('b'), ident('c')));
-      expectParse('a.a ? b.a : c.a', ternary(getter(ident('a'), 'a'),
-          getter(ident('b'), 'a'), getter(ident('c'), 'a')));
-      expect(() => parse('a + 1 ? b + 1 :: c.d + 3'), throwsParseException);
-    });
-
-    test('ternary operators have lowest associativity', () {
-      expectParse('a == b ? c + d : e - f', ternary(
-            binary(ident('a'), '==', ident('b')),
-            binary(ident('c'), '+', ident('d')),
-            binary(ident('e'), '-', ident('f'))));
-
-      expectParse('a.x == b.y ? c + d : e - f', ternary(
-            binary(getter(ident('a'), 'x'), '==', getter(ident('b'), 'y')),
-            binary(ident('c'), '+', ident('d')),
-            binary(ident('e'), '-', ident('f'))));
-
-      expectParse('a.x == b.y ? c + d : e - f', ternary(
-            binary(getter(ident('a'), 'x'), '==', getter(ident('b'), 'y')),
-            binary(ident('c'), '+', ident('d')),
-            binary(ident('e'), '-', ident('f'))));
-    });
-
-    test('should parse a filter chain', () {
-      expectParse('a | b | c', binary(binary(ident('a'), '|', ident('b')),
-          '|', ident('c')));
-    });
-
-    test('should parse "in" expression', () {
-      expectParse('a in b', inExpr(ident('a'), ident('b')));
-      expectParse('a in b.c',
-          inExpr(ident('a'), getter(ident('b'), 'c')));
-      expectParse('a in b + c',
-          inExpr(ident('a'), binary(ident('b'), '+', ident('c'))));
-    });
-
-    test('should reject comprehension with non-assignable left expression', () {
-      expect(() => parse('a + 1 in b'), throwsParseException);
-    });
-
-    test('should parse "as" expressions', () {
-      expectParse('a as b', asExpr(ident('a'), ident('b')));
-    });
-
-    skip_test('should reject keywords as identifiers', () {
-      expect(() => parse('a.in'), throwsParseException);
-      expect(() => parse('a.as'), throwsParseException);
-      expect(() => parse('a.this'), throwsParseException);
-    });
-
-    test('should parse map literals', () {
-      expectParse("{'a': 1}",
-          mapLiteral([mapLiteralEntry(literal('a'), literal(1))]));
-      expectParse("{'a': 1, 'b': 2 + 3}",
-          mapLiteral([
-              mapLiteralEntry(literal('a'), literal(1)),
-              mapLiteralEntry(literal('b'),
-                  binary(literal(2), '+', literal(3)))]));
-      expectParse("{'a': foo()}",
-          mapLiteral([mapLiteralEntry(
-              literal('a'), invoke(ident('foo'), null, []))]));
-      expectParse("{'a': foo('a')}",
-          mapLiteral([mapLiteralEntry(
-              literal('a'), invoke(ident('foo'), null, [literal('a')]))]));
-    });
-
-    test('should parse map literals with method calls', () {
-      expectParse("{'a': 1}.length",
-          getter(mapLiteral([mapLiteralEntry(literal('a'), literal(1))]),
-              'length'));
-    });
-
-    test('should parse list literals', () {
-      expectParse('[1, "a", b]',
-          listLiteral([literal(1), literal('a'), ident('b')]));
-      expectParse('[[1, 2], [3, 4]]',
-          listLiteral([listLiteral([literal(1), literal(2)]),
-                       listLiteral([literal(3), literal(4)])]));
-    });
-  });
-}