Add unit tests for installPlugin

1 files changed, 47 insertions, 0 deletions

diff --git a/lib/plugins/installPlugin.js b/lib/plugins/installPlugin.js
new file mode 100644
index 0000000..37852df
--- /dev/null
+++ b/lib/plugins/installPlugin.js
@@ -0,0 +1,47 @@
+var npmi = require('npmi');
+
+var Promise = require('../utils/promise');
+var resolveVersion = require('./resolveVersion');
+
+/**
+    Install a plugin for a book
+
+    @param {Book}
+    @param {PluginDependency}
+    @return {Promise}
+*/
+function installPlugin(book, plugin) {
+    var logger = book.getLogger();
+
+    var installFolder = book.getRoot();
+    var name = plugin.getName();
+    var requirement = plugin.getVersion();
+
+    logger.info.ln('');
+    logger.info.ln('installing plugin "' + name + '"');
+
+    // Find a version to install
+    return resolveVersion(plugin)
+    .then(function(version) {
+        if (!version) {
+            throw new Error('Found no satisfactory version for plugin "' + name + '" with requirement "' + requirement + '"');
+        }
+
+        logger.info.ln('install plugin "' + name +'" (' + requirement + ') from NPM with version', version);
+        return Promise.nfcall(npmi, {
+            'name': plugin.getNpmID(),
+            'version': version,
+            'path': installFolder,
+            'npmLoad': {
+                'loglevel': 'silent',
+                'loaded': true,
+                'prefix': installFolder
+            }
+        });
+    })
+    .then(function() {
+        logger.info.ok('plugin "' + name + '" installed with success');
+    });
+}
+
+module.exports = installPlugin;