Improve tests for tags

Author: SamyPesse

README.md

@@ -90,3 +90,10 @@ Use a local folder as a GitBook version (for developement)
 ```
 $ gitbook alias ./mygitbook latest
 ```
+
+### Resolve
+
+- Look for the `book.json` and use `gitbook` field to resolve versions to use
+- Use latest version installed locally
+    - `3.0.0-pre.1` will be used in favor of `2.6.7` by default
+    - Tags `pre`, `alpha`, `beta`, `latest` will always be used first

bin/gitbook.js

@@ -74,24 +74,6 @@ program
         );
     });
 
-program
-    .command('ensure [condition] [folder]')
-    .description('Validate that the version for book match another condition')
-    .action(function(condition, folder){
-        runPromise(
-            manager.ensure(folder || process.cwd(), null, {
-                install: false
-            })
-            .then(function(v) {
-                if (!tags.satisfies(v.version, condition)) {
-                    throw new Error('Version "' + v.version + '" required by this book doesn\'t match condition "' + condition + '"')
-                }
-            }, function() {
-                throw new Error('Version required by this book doesn\'t match "' + condition + '"');
-            })
-        );
-    });
-
 program
     .command('ls-remote')
     .description('List remote versions available for install')

test/tags.js

@@ -17,4 +17,22 @@ describe('Tags', function() {
             tags.satisfies('pre', '*').should.be.ok()
         });
     });
+
+    describe('.sort()', function() {
+        it('should sort tags first', function() {
+            tags.sort('pre', '1.0.0').should.equal(-1);
+            tags.sort('beta', '1.0.0').should.equal(-1);
+            tags.sort('alpha', '1.0.0').should.equal(-1);
+        });
+
+        it('should sort tags correctly', function() {
+            tags.sort('alpha', 'pre').should.equal(-1);
+            tags.sort('alpha', 'beta').should.equal(-1);
+        });
+
+        it('should sort pre versions first', function() {
+            tags.sort('1.0.0-pre.1', '0.0.9').should.equal(-1);
+            tags.sort('1.0.0-pre.1', '1.0.0').should.equal(1);
+        });
+    });
 });