Add more set-like version constraint operations.

test/version_range_test.dart

 // Copyright (c) 2014, 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 pub_semver.test.version_range_test;
 
 import 'package:test/test.dart';
 
 import 'package:pub_semver/pub_semver.dart';
 
@@ skipping 133 matching lines @@
 
     test('allows any version if there is no min or max', () {
       var range = new VersionRange();
 
       expect(range, allows(
           new Version.parse('0.0.0'),
           new Version.parse('999.99.9')));
     });
   });
 
+  group('allowsAll()', () {
+    test('allows an empty constraint', () {
+      expect(
+          new VersionRange(min: v123, max: v250)
+              .allowsAll(VersionConstraint.empty),
+          isTrue);
+    });
+
+    test('allows allowed versions', () {
+      var range = new VersionRange(min: v123, max: v250, includeMax: true);
+      expect(range.allowsAll(v123), isFalse);
+      expect(range.allowsAll(v124), isTrue);
+      expect(range.allowsAll(v250), isTrue);
+      expect(range.allowsAll(v300), isFalse);
+    });
+
+    test('with no min', () {
+      var range = new VersionRange(max: v250);
+      expect(range.allowsAll(new VersionRange(min: v080, max: v140)), isTrue);
+      expect(range.allowsAll(new VersionRange(min: v080, max: v300)), isFalse);
+      expect(range.allowsAll(new VersionRange(max: v140)), isTrue);
+      expect(range.allowsAll(new VersionRange(max: v300)), isFalse);
+      expect(range.allowsAll(range), isTrue);
+      expect(range.allowsAll(VersionConstraint.any), isFalse);
+    });
+
+    test('with no max', () {
+      var range = new VersionRange(min: v010);
+      expect(range.allowsAll(new VersionRange(min: v080, max: v140)), isTrue);
+      expect(range.allowsAll(new VersionRange(min: v003, max: v140)), isFalse);
+      expect(range.allowsAll(new VersionRange(min: v080)), isTrue);
+      expect(range.allowsAll(new VersionRange(min: v003)), isFalse);
+      expect(range.allowsAll(range), isTrue);
+      expect(range.allowsAll(VersionConstraint.any), isFalse);
+    });
+
+    test('with a min and max', () {
+      var range = new VersionRange(min: v010, max: v250);
+      expect(range.allowsAll(new VersionRange(min: v080, max: v140)), isTrue);
+      expect(range.allowsAll(new VersionRange(min: v080, max: v300)), isFalse);
+      expect(range.allowsAll(new VersionRange(min: v003, max: v140)), isFalse);
+      expect(range.allowsAll(new VersionRange(min: v080)), isFalse);
+      expect(range.allowsAll(new VersionRange(max: v140)), isFalse);
+      expect(range.allowsAll(range), isTrue);
+    });
+
+    test("allows a bordering range that's not more inclusive", () {
+      var exclusive = new VersionRange(min: v010, max: v250);
+      var inclusive = new VersionRange(
+          min: v010, includeMin: true, max: v250, includeMax: true);
+      expect(inclusive.allowsAll(exclusive), isTrue);
+      expect(inclusive.allowsAll(inclusive), isTrue);
+      expect(exclusive.allowsAll(inclusive), isFalse);
+      expect(exclusive.allowsAll(exclusive), isTrue);
+    });
+
+    test('allows unions that are completely contained', () {
+      var range = new VersionRange(min: v114, max: v200);
+      expect(
+          range.allowsAll(new VersionRange(min: v123, max: v124).union(v140)),
+          isTrue);
+      expect(
+          range.allowsAll(new VersionRange(min: v010, max: v124).union(v140)),
+          isFalse);
+      expect(
+          range.allowsAll(new VersionRange(min: v123, max: v234).union(v140)),
+          isFalse);
+    });
+  });
+
+  group('allowsAny()', () {
+    test('disallows an empty constraint', () {
+      expect(
+          new VersionRange(min: v123, max: v250)
+              .allowsAny(VersionConstraint.empty),
+          isFalse);
+    });
+
+    test('allows allowed versions', () {
+      var range = new VersionRange(min: v123, max: v250, includeMax: true);
+      expect(range.allowsAny(v123), isFalse);
+      expect(range.allowsAny(v124), isTrue);
+      expect(range.allowsAny(v250), isTrue);
+      expect(range.allowsAny(v300), isFalse);
+    });
+
+    test('with no min', () {
+      var range = new VersionRange(max: v200);
+      expect(range.allowsAny(new VersionRange(min: v140, max: v300)), isTrue);
+      expect(range.allowsAny(new VersionRange(min: v234, max: v300)), isFalse);
+      expect(range.allowsAny(new VersionRange(min: v140)), isTrue);
+      expect(range.allowsAny(new VersionRange(min: v234)), isFalse);
+      expect(range.allowsAny(range), isTrue);
+    });
+
+    test('with no max', () {
+      var range = new VersionRange(min: v072);
+      expect(range.allowsAny(new VersionRange(min: v003, max: v140)), isTrue);
+      expect(range.allowsAny(new VersionRange(min: v003, max: v010)), isFalse);
+      expect(range.allowsAny(new VersionRange(max: v080)), isTrue);
+      expect(range.allowsAny(new VersionRange(max: v003)), isFalse);
+      expect(range.allowsAny(range), isTrue);
+    });
+
+    test('with a min and max', () {
+      var range = new VersionRange(min: v072, max: v200);
+      expect(range.allowsAny(new VersionRange(min: v003, max: v140)), isTrue);
+      expect(range.allowsAny(new VersionRange(min: v140, max: v300)), isTrue);
+      expect(range.allowsAny(new VersionRange(min: v003, max: v010)), isFalse);
+      expect(range.allowsAny(new VersionRange(min: v234, max: v300)), isFalse);
+      expect(range.allowsAny(new VersionRange(max: v010)), isFalse);
+      expect(range.allowsAny(new VersionRange(min: v234)), isFalse);
+      expect(range.allowsAny(range), isTrue);
+    });
+
+    test('allows a bordering range when both are inclusive', () {
+      expect(new VersionRange(max: v250).allowsAny(new VersionRange(min: v250)),
+          isFalse);
+
+      expect(new VersionRange(max: v250, includeMax: true)
+              .allowsAny(new VersionRange(min: v250)),
+          isFalse);
+
+      expect(new VersionRange(max: v250)
+              .allowsAny(new VersionRange(min: v250, includeMin: true)),
+          isFalse);
+
+      expect(new VersionRange(max: v250, includeMax: true)
+              .allowsAny(new VersionRange(min: v250, includeMin: true)),
+          isTrue);
+
+      expect(new VersionRange(min: v250).allowsAny(new VersionRange(max: v250)),
+          isFalse);
+
+      expect(new VersionRange(min: v250, includeMin: true)
+              .allowsAny(new VersionRange(max: v250)),
+          isFalse);
+
+      expect(new VersionRange(min: v250)
+              .allowsAny(new VersionRange(max: v250, includeMax: true)),
+          isFalse);
+
+      expect(new VersionRange(min: v250, includeMin: true)
+              .allowsAny(new VersionRange(max: v250, includeMax: true)),
+          isTrue);
+    });
+
+    test('allows unions that are partially contained', () {
+      var range = new VersionRange(min: v114, max: v200);
+      expect(
+          range.allowsAny(new VersionRange(min: v010, max: v080).union(v140)),
+          isTrue);
+      expect(
+          range.allowsAny(new VersionRange(min: v123, max: v234).union(v300)),
+          isTrue);
+      expect(
+          range.allowsAny(new VersionRange(min: v234, max: v300).union(v010)),
+          isFalse);
+    });
+  });
+
   group('intersect()', () {
     test('two overlapping ranges', () {
       var a = new VersionRange(min: v123, max: v250);
       var b = new VersionRange(min: v200, max: v300);
       var intersect = a.intersect(b);
       expect(intersect.min, equals(v200));
       expect(intersect.max, equals(v250));
       expect(intersect.includeMin, isFalse);
       expect(intersect.includeMax, isFalse);
     });
@@ skipping 24 matching lines @@
     });
 
     test('returns the version if the range allows it', () {
       expect(new VersionRange(min: v114, max: v124).intersect(v123),
           equals(v123));
       expect(new VersionRange(min: v123, max: v124).intersect(v114).isEmpty,
           isTrue);
     });
   });
 
+  group('union()', () {
+    test("with a version returns the range if it contains the version", () {
+      var range = new VersionRange(min: v114, max: v124);
+      expect(range.union(v123), equals(range));
+    });
+
+    test("with a version on the edge of the range, expands the range", () {
+      expect(new VersionRange(min: v114, max: v124).union(v124),
+          equals(new VersionRange(min: v114, max: v124, includeMax: true)));
+      expect(new VersionRange(min: v114, max: v124).union(v114),
+          equals(new VersionRange(min: v114, max: v124, includeMin: true)));
+    });
+
+    test("with a version allows both the range and the version if the range "
+        "doesn't contain the version", () {
+      var result = new VersionRange(min: v003, max: v114).union(v124);
+      expect(result, allows(v010));
+      expect(result, doesNotAllow(v123));
+      expect(result, allows(v124));
+    });
+
+    test("returns a VersionUnion for a disjoint range", () {
+      var result = new VersionRange(min: v003, max: v114)
+          .union(new VersionRange(min: v130, max: v200));
+      expect(result, allows(v080));
+      expect(result, doesNotAllow(v123));
+      expect(result, allows(v140));
+    });
+
+    test("considers open ranges disjoint", () {
+      var result = new VersionRange(min: v003, max: v114)
+          .union(new VersionRange(min: v114, max: v200));
+      expect(result, allows(v080));
+      expect(result, doesNotAllow(v114));
+      expect(result, allows(v140));
+
+      result = new VersionRange(min: v114, max: v200)
+          .union(new VersionRange(min: v003, max: v114));
+      expect(result, allows(v080));
+      expect(result, doesNotAllow(v114));
+      expect(result, allows(v140));
+    });
+
+    test("returns a merged range for an overlapping range", () {
+      var result = new VersionRange(min: v003, max: v114)
+          .union(new VersionRange(min: v080, max: v200));
+      expect(result, equals(new VersionRange(min: v003, max: v200)));
+    });
+
+    test("considers closed ranges overlapping", () {
+      var result = new VersionRange(min: v003, max: v114, includeMax: true)
+          .union(new VersionRange(min: v114, max: v200));
+      expect(result, equals(new VersionRange(min: v003, max: v200)));
+
+      result = new VersionRange(min: v003, max: v114)
+          .union(new VersionRange(min: v114, max: v200, includeMin: true));
+      expect(result, equals(new VersionRange(min: v003, max: v200)));
+
+      result = new VersionRange(min: v114, max: v200)
+          .union(new VersionRange(min: v003, max: v114, includeMax: true));
+      expect(result, equals(new VersionRange(min: v003, max: v200)));
+
+      result = new VersionRange(min: v114, max: v200, includeMin: true)
+          .union(new VersionRange(min: v003, max: v114));
+      expect(result, equals(new VersionRange(min: v003, max: v200)));
+    });
+
+    test("includes edges if either range does", () {
+      var result = new VersionRange(min: v003, max: v114, includeMin: true)
+          .union(new VersionRange(min: v003, max: v114, includeMax: true));
+      expect(result, equals(new VersionRange(
+          min: v003, max: v114, includeMin: true, includeMax: true)));
+    });
+  });
+
   test('isEmpty', () {
     expect(new VersionRange().isEmpty, isFalse);
     expect(new VersionRange(min: v123, max: v124).isEmpty, isFalse);
   });
 }