Update GemfileParser #3072

    * Add new step in GemfileParser.__init__() to determine the Ruby package that this gemfile.lock is for
    * Add new test

Signed-off-by: Jono Yang <jyang@nexb.com>

Author: JonoYang

src/packagedcode/gemfile_lock.py

@@ -417,13 +417,10 @@ def refine(self):
 
     def set_primary_gem(self):
         for gem in self.all_gems.values():
-            if gem.type == PATH:
-                self.primary_gem = Gem(
-                    gem.name,
-                    gem.version,
-                    gem.platform,
-                )
-                break
+            if not gem.type == PATH:
+                continue
+            self.primary_gem = gem
+            break
 
     def get_or_create(self, name, version=None, platform=None):
         """

src/packagedcode/rubygems.py

@@ -270,7 +270,7 @@ def parse(cls, location):
                     is_runtime=True,
                     is_optional=False,
                     is_resolved=True,
-                ) for dep in all_gems[1:]
+                ) for dep in all_gems if dep != primary_gem
             ]
             urls = get_urls(primary_gem.name, primary_gem.version)