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Side by Side Diff: tests/corelib/iterable_generate_test.dart

Issue 2770063002: Revert "Format all multitests" (Closed)
Patch Set: Created 3 years, 9 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5
5 import "package:expect/expect.dart"; 6 import "package:expect/expect.dart";
6 7
7 main() { 8 main() {
8 bool checkedMode = false; 9 bool checkedMode = false;
9 assert((checkedMode = true)); 10 assert((checkedMode = true));
10 void test(expectedList, generatedIterable) { 11 void test(expectedList, generatedIterable) {
11 Expect.equals(expectedList.length, generatedIterable.length); 12 Expect.equals(expectedList.length, generatedIterable.length);
12 Expect.listEquals(expectedList, generatedIterable.toList()); 13 Expect.listEquals(expectedList, generatedIterable.toList());
13 } 14 }
14
15 test([], new Iterable.generate(0)); 15 test([], new Iterable.generate(0));
16 test([0], new Iterable.generate(1)); 16 test([0], new Iterable.generate(1));
17 test([0, 1, 2, 3, 4], new Iterable.generate(5)); 17 test([0,1,2,3,4], new Iterable.generate(5));
18 test(["0", "1", "2", "3", "4"], new Iterable.generate(5, (x) => "$x")); 18 test(["0","1","2","3","4"], new Iterable.generate(5, (x) => "$x"));
19 test([2, 3, 4, 5, 6], new Iterable.generate(7).skip(2)); 19 test([2,3,4,5,6], new Iterable.generate(7).skip(2));
20 test([0, 1, 2, 3, 4], new Iterable.generate(7).take(5)); 20 test([0,1,2,3,4], new Iterable.generate(7).take(5));
21 test([], new Iterable.generate(5).skip(6)); 21 test([], new Iterable.generate(5).skip(6));
22 test([], new Iterable.generate(5).take(0)); 22 test([], new Iterable.generate(5).take(0));
23 test([], new Iterable.generate(5).take(3).skip(3)); 23 test([], new Iterable.generate(5).take(3).skip(3));
24 test([], new Iterable.generate(5).skip(6).take(0)); 24 test([], new Iterable.generate(5).skip(6).take(0));
25 25
26 // Test types. 26 // Test types.
27 27
28 Iterable<int> it = new Iterable<int>.generate(5); 28 Iterable<int> it = new Iterable<int>.generate(5);
29 Expect.isTrue(it is Iterable<int>); 29 Expect.isTrue(it is Iterable<int>);
30 Expect.isTrue(it.iterator is Iterator<int>); 30 Expect.isTrue(it.iterator is Iterator<int>);
31 Expect.isTrue(it is! Iterable<String>); 31 Expect.isTrue(it is! Iterable<String>);
32 Expect.isTrue(it.iterator is! Iterator<String>); 32 Expect.isTrue(it.iterator is! Iterator<String>);
33 test([0, 1, 2, 3, 4], it); 33 test([0,1,2,3,4], it);
34 34
35 Iterable<String> st = new Iterable<String>.generate(5, (x) => "$x"); 35 Iterable<String> st = new Iterable<String>.generate(5, (x) => "$x");
36 Expect.isTrue(st is Iterable<String>); 36 Expect.isTrue(st is Iterable<String>);
37 Expect.isTrue(st.iterator is Iterator<String>); 37 Expect.isTrue(st.iterator is Iterator<String>);
38 Expect.isFalse(st is Iterable<int>); 38 Expect.isFalse(st is Iterable<int>);
39 Expect.isFalse(st.iterator is Iterator<int>); 39 Expect.isFalse(st.iterator is Iterator<int>);
40 test(["0", "1", "2", "3", "4"], st); 40 test(["0","1","2","3","4"], st);
41 41
42 if (checkedMode) { 42 if (checkedMode) {
43 Expect.throws(() => new Iterable<String>.generate(5)); 43 Expect.throws(() => new Iterable<String>.generate(5));
44 } 44 }
45 45
46 // Omitted generator function means `(int x) => x`, and the type parameters 46 // Omitted generator function means `(int x) => x`, and the type parameters
47 // must then be compatible with `int`. 47 // must then be compatible with `int`.
48 // Check that we catch invalid type parameters. 48 // Check that we catch invalid type parameters.
49 49
50 // Valid types: 50 // Valid types:
(...skipping 11 matching lines...) Expand all
62 if (checkedMode) { // //# 01: ok 62 if (checkedMode) { // //# 01: ok
63 Expect.throws(() => new Iterable<Null>.generate(5).elementAt(2)); //# 01: co ntinued 63 Expect.throws(() => new Iterable<Null>.generate(5).elementAt(2)); //# 01: co ntinued
64 } else { // //# 01: continued 64 } else { // //# 01: continued
65 Iterable<dynamic> iter5 = new Iterable<Null>.generate(5); // //# 01: continued 65 Iterable<dynamic> iter5 = new Iterable<Null>.generate(5); // //# 01: continued
66 Expect.equals(2, iter5.elementAt(2)); // //# 01: continued 66 Expect.equals(2, iter5.elementAt(2)); // //# 01: continued
67 } // //# 01: continued 67 } // //# 01: continued
68 Expect.throws(() => new Iterable<bool>.generate(5)); 68 Expect.throws(() => new Iterable<bool>.generate(5));
69 69
70 // Regression: https://github.com/dart-lang/sdk/issues/26358 70 // Regression: https://github.com/dart-lang/sdk/issues/26358
71 var count = 0; 71 var count = 0;
72 var iter = new Iterable.generate(5, (v) { 72 var iter = new Iterable.generate(5, (v) { count++; return v; });
73 count++;
74 return v;
75 });
76 Expect.equals(0, count); 73 Expect.equals(0, count);
77 Expect.equals(2, iter.elementAt(2)); // Doesn't compute the earlier values. 74 Expect.equals(2, iter.elementAt(2)); // Doesn't compute the earlier values.
78 Expect.equals(1, count); 75 Expect.equals(1, count);
79 Expect.equals(2, iter.skip(2).first); // Doesn't compute the skipped values. 76 Expect.equals(2, iter.skip(2).first); // Doesn't compute the skipped values.
80 Expect.equals(2, count); 77 Expect.equals(2, count);
81 } 78 }
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