streamline auth - normalize project_id to projectId

CONTRIBUTORS

@@ -21,6 +21,7 @@ Ido Shamun <idoesh1@gmail.com>
 Jason Dobry <jason.dobry@gmail.com>
 Jesse Friedman <jesse@jesse.ws>
 Johan Euphrosine <proppy@google.com>
+Nathan White <nw@nwhite.net>
 Marco Ziccardi <marco.ziccard@gmail.com>
 Patrick Costello <pcostell@google.com>
 Silvano Luciani <silvano@google.com>

packages/common/src/util.js

@@ -541,6 +541,10 @@ function normalizeArguments(globalContext, localConfig, options) {
 
   var config = util.extendGlobalConfig(globalConfig, localConfig);
 
+  if (!config.projectId && config.project_id) {
+    config.projectId = config.project_id;
+  }
+
   if (options.projectIdRequired !== false && !config.projectId) {
     throw util.missingProjectIdError;
   }

packages/common/test/util.js

@@ -1216,6 +1216,22 @@ describe('common/util', function() {
       assert.strictEqual(config, fakeContext.config_);
     });
 
+    describe('project_idNormalized', function() {
+      var fakeContextWithProjectUnderscoreId = {
+        config_: {
+          project_id: 'grapespaceship911'
+        }
+      };
+
+      it('should return projectId', function() {
+        var config;
+        var projectId = fakeContextWithProjectUnderscoreId.config_.project_id;
+
+        config = util.normalizeArguments(fakeContextWithProjectUnderscoreId);
+        assert.strictEqual(config.projectId, projectId);
+      });
+    });
+
     describe('projectIdRequired', function() {
       var defaultProjectId;