Add --save-exact flag

lib/commands/install.js

@@ -35,7 +35,8 @@ install.readOptions = function (argv) {
         'force-latest': { type: Boolean, shorthand: 'F'},
         'production': { type: Boolean, shorthand: 'p' },
         'save': { type: Boolean, shorthand: 'S' },
-        'save-dev': { type: Boolean, shorthand: 'D' }
+        'save-dev': { type: Boolean, shorthand: 'D' },
+        'save-exact': { type: Boolean, shorthand: 'E' }
     }, argv);
 
     var packages = options.argv.remain.slice(1);

lib/core/Project.js

@@ -93,6 +93,10 @@ Project.prototype.install = function (decEndpoints, options, config) {
 
                 jsonEndpoint = endpointParser.decomposed2json(decEndpoint);
 
+                if (that._options.saveExact) {
+                    jsonEndpoint[decEndpoint.name] = decEndpoint.pkgMeta.version;
+                }
+
                 if (that._options.save) {
                     that._json.dependencies = mout.object.mixIn(that._json.dependencies || {}, jsonEndpoint);
                 }

templates/json/help-install.json

@@ -30,6 +30,11 @@
             "shorthand":   "-D",
             "flag":        "--save-dev",
             "description": "Save installed packages into the project's bower.json devDependencies"
+        },
+        {
+            "shorthand":   "-E",
+            "flag":        "--save-exact",
+            "description": "Configure installed packages with an exact version rather than semver"
         }
     ]
 }

test/commands/install.js

@@ -8,24 +8,26 @@ describe('bower install', function () {
     var install = helpers.command('install', { cwd: tempDir.path });
 
     it('correctly reads arguments', function() {
-        expect(install.readOptions(['jquery', 'angular', '-F', '-p', '-S', '-D']))
+        expect(install.readOptions(['jquery', 'angular', '-F', '-p', '-S', '-D', '-E']))
         .to.eql([['jquery', 'angular'], {
             forceLatest: true,
             production: true,
             save: true,
-            saveDev: true
+            saveDev: true,
+            saveExact: true
         }]);
     });
 
     it('correctly reads long arguments', function() {
         expect(install.readOptions([
             'jquery', 'angular',
-            '--force-latest', '--production', '--save', '--save-dev'
+            '--force-latest', '--production', '--save', '--save-dev', '--save-exact'
         ])).to.eql([['jquery', 'angular'], {
             forceLatest: true,
             production: true,
             save: true,
-            saveDev: true
+            saveDev: true,
+            saveExact: true
         }]);
     });
 
@@ -51,6 +53,68 @@ describe('bower install', function () {
         });
     });
 
+    it('writes an exact version number to dependencies in bower.json if --save --save-exact flags are used', function () {
+        package.prepare({
+            'bower.json': {
+                version: '1.2.3'
+            }
+        });
+
+        tempDir.prepare({
+            'bower.json': {
+                name: 'test'
+            }
+        });
+
+        return helpers.run(install, [
+            [package.path],
+            { saveExact: true, save: true }
+        ]).then(function() {
+            expect(tempDir.readJson('bower.json').dependencies.package).to.equal('1.2.3');
+        });
+    });
+
+    it('writes an exact version number to devDependencies in bower.json if --save-dev --save-exact flags are used', function () {
+        package.prepare({
+            'bower.json': {
+                version: '0.1.0'
+            }
+        });
+
+        tempDir.prepare({
+            'bower.json': {
+                name: 'test'
+            }
+        });
+
+        return helpers.run(install, [
+            [package.path],
+            { saveExact: true, saveDev: true }
+        ]).then(function() {
+            expect(tempDir.readJson('bower.json').devDependencies.package).to.equal('0.1.0');
+        });
+    });
+
+
+    it('does not write to bower.json if only --save-exact flag is used', function() {
+        package.prepare({
+            'bower.json': {
+                version: '1.2.3'
+            }
+        });
+
+        tempDir.prepare({
+            'bower.json': {
+                name: 'test'
+            }
+        });
+
+        return helpers.run(install, [[package.path], { saveExact: true }]).then(function() {
+            expect(tempDir.read('bower.json')).to.not.contain('dependencies');
+            expect(tempDir.read('bower.json')).to.not.contain('devDependencies');
+        });
+    });
+
     it('reads .bowerrc from cwd', function () {
         package.prepare({ foo: 'bar' });