Add semverReverseSort filter

Closes #1
rails-assets · Feb 27, 2014 · a329b9c · a329b9c
1 parent 7dda242
commit a329b9c
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diff --git a/angular-semver-sort.js b/angular-semver-sort.js
@@ -1057,4 +1057,10 @@ if (typeof define === 'function' && define.amd)
       });
     };
   }
+]).filter('semverReverseSort', [
+  '$filter', function($filter) {
+    return function(collection, prop) {
+      return $filter('semverSort')(collection, prop).slice(0).reverse();
+    };
+  }
 ]);
diff --git a/src/angular-semver-sort.js b/src/angular-semver-sort.js
@@ -44,4 +44,10 @@
       });
     };
   }
+]).filter('semverReverseSort', [
+  '$filter', function($filter) {
+    return function(collection, prop) {
+      return $filter('semverSort')(collection, prop).slice(0).reverse();
+    };
+  }
 ]);
diff --git a/test/test.js b/test/test.js
@@ -88,3 +88,94 @@ describe('Filter: semverSort', function() {
     });
   });
 });
+
+describe('Filter: semverReverseSort', function() {
+  var semverReverseSort;
+
+  beforeEach(function() {
+    module('semverSort');
+    inject(function($filter) {
+      semverReverseSort = $filter('semverReverseSort');
+    });
+  });
+
+  it('should be a function', function() {
+    semverReverseSort.should.be.a.Function;
+  });
+
+  describe('given an array of semver strings', function() {
+    it('should return the array of strings sorted by version number in reverse order', function() {
+      semverReverseSort([
+        '12.4.5', '12.10.5', '1.2.5', '0.10.1', '0.2.1', '1.1.1'
+      ]).should.be.an.Array.with.lengthOf(6).and.be.eql([
+        '12.10.5', '12.4.5', '1.2.5', '1.1.1', '0.10.1', '0.2.1'
+      ]);
+    });
+  });
+
+  describe('given an array of objects with the property being a semver string', function() {
+    it('should return the array of the same objects sorted by the version number in the given property in reverse order', function() {
+      semverReverseSort([
+        { name: 'A', version: '12.4.5' },
+        { name: 'B', version: '12.10.5' },
+        { name: 'C', version: '1.2.5' },
+        { name: 'D', version: '0.10.1' },
+        { name: 'E', version: '0.2.1' },
+        { name: 'F', version: '1.1.1' }
+      ], 'version').should.be.an.Array.with.lengthOf(6).and.be.eql([
+        { name: 'B', version: '12.10.5' },
+        { name: 'A', version: '12.4.5' },
+        { name: 'C', version: '1.2.5' },
+        { name: 'F', version: '1.1.1' },
+        { name: 'D', version: '0.10.1' },
+        { name: 'E', version: '0.2.1' }
+      ]);
+    });
+  });
+
+  describe('given an array that contains non-semver strings', function() {
+    it('should not throw', function() {
+      (function() {
+        semverReverseSort([
+          '1.0.0', '0.1.1', '0.10.1', 'OH HAI', false
+        ]);
+      }).should.not.throw();
+    });
+
+    it('should return the array of strings sorted in reverse alphabetical order', function() {
+      semverReverseSort([
+        '1.2.1', '1.10.1', 'Ć', 'Ą'
+      ]).should.be.an.Array.with.lengthOf(4).and.be.eql([
+        'Ć', 'Ą', '1.2.1', '1.10.1'
+      ]);
+    });
+  });
+
+  describe('given an array of objects with the property that contains a non-semver string', function() {
+    it('should not throw', function() {
+      (function() {
+        semverReverseSort([
+          { name: 'A', version: '1.0.0' },
+          { name: 'B', version: '0.1.1' },
+          { name: 'C', version: '0.10.1' },
+          { name: 'D', version: 'OH HAI' },
+          { name: 'E' }
+        ], 'version');
+      }).should.not.throw();
+    });
+
+    it('should return the array of the same objects sorted in reverse alphabetical order by the given property', function() {
+      semverReverseSort([
+        { name: 'A', version: '1.2.1' },
+        { name: 'B', version: '1.10.1' },
+        { name: 'C', version: 'Ć' },
+        { name: 'D', version: 'Ą' }
+      ], 'version').should.be.an.Array.with.lengthOf(4).and.be.eql([
+        { name: 'C', version: 'Ć' },
+        { name: 'D', version: 'Ą' },
+        { name: 'A', version: '1.2.1' },
+        { name: 'B', version: '1.10.1' }
+      ]);
+    });
+  });
+});