| Index: tests/language/src/GenericDeepTest.dart
|
| diff --git a/tests/language/src/GenericDeepTest.dart b/tests/language/src/GenericDeepTest.dart
|
| deleted file mode 100644
|
| index 154df1eaa58b79c03b1efa144d226729f3f91eca..0000000000000000000000000000000000000000
|
| --- a/tests/language/src/GenericDeepTest.dart
|
| +++ /dev/null
|
| @@ -1,84 +0,0 @@
|
| -// Copyright (c) 2011, 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.
|
| -
|
| -// Dart test for deeply nested generic types.
|
| -
|
| -/** A natural number aka Peano number. */
|
| -interface N {
|
| - N add1();
|
| - N sub1();
|
| -}
|
| -
|
| -/** Zero element. */
|
| -class Z implements N {
|
| - Z();
|
| - N add1() { return new S<Z>(this); }
|
| - N sub1() { throw "Error: sub1(0)"; }
|
| -}
|
| -
|
| -/** Successor element. */
|
| -class S<K> implements N {
|
| - N before;
|
| - S(this.before);
|
| - N add1() { return new S<S<K>>(this); }
|
| - N sub1() {
|
| - // It would be super cool if this could be "new K()".
|
| - return before;
|
| - }
|
| -}
|
| -
|
| -N NFromInt(int x) {
|
| - if (x == 0)
|
| - return new Z();
|
| - else
|
| - return NFromInt(x - 1).add1();
|
| -}
|
| -
|
| -int IntFromN(N x) {
|
| - if (x is Z)
|
| - return 0;
|
| - if (x is S)
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| - return IntFromN(x.sub1()) + 1;
|
| - throw "Error";
|
| -}
|
| -
|
| -bool IsEven(N x) {
|
| - if (x is Z) return true;
|
| - if (x is S<Z>) return false;
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| - if (x is S<S>) return IsEven(x.sub1().sub1());
|
| - throw "Error in IsEven";
|
| -}
|
| -
|
| -main() {
|
| - Expect.isTrue(NFromInt(0) is Z);
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| - Expect.isTrue(NFromInt(1) is S<Z>);
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| - Expect.isTrue(NFromInt(2) is S<S<Z>>);
|
| - Expect.isTrue(NFromInt(3) is S<S<S<Z>>>);
|
| - Expect.isTrue(NFromInt(10) is S<S<S<S<S<S<S<S<S<S<Z>>>>>>>>>>);
|
| -
|
| - // Negative tests.
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| - Expect.isTrue(NFromInt(0) is !S);
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| - Expect.isTrue(NFromInt(1) is !Z);
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| - Expect.isTrue(NFromInt(1) is !S<S>);
|
| - Expect.isTrue(NFromInt(2) is !Z);
|
| - Expect.isTrue(NFromInt(2) is !S<Z>);
|
| - Expect.isTrue(NFromInt(2) is !S<S<S>>);
|
| -
|
| - // Greater-than tests
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| - Expect.isTrue(NFromInt(4) is S<S>); // 4 >= 2
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| - Expect.isTrue(NFromInt(4) is S<S<S>>); // 4 >= 3
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| - Expect.isTrue(NFromInt(4) is S<S<S<S>>>); // 4 >= 4
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| - Expect.isTrue(NFromInt(4) is !S<S<S<S<S>>>>); // 4 < 5
|
| -
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| - Expect.isTrue(IsEven(NFromInt(0)));
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| - Expect.isFalse(IsEven(NFromInt(1)));
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| - Expect.isTrue(IsEven(NFromInt(2)));
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| - Expect.isFalse(IsEven(NFromInt(3)));
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| - Expect.isTrue(IsEven(NFromInt(4)));
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| -
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| - Expect.equals(0, IntFromN(NFromInt(0)));
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| - Expect.equals(1, IntFromN(NFromInt(1)));
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| - Expect.equals(2, IntFromN(NFromInt(2)));
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| - Expect.equals(50, IntFromN(NFromInt(50)));
|
| -}
|
|
|