Fixes pip-compile file matcher for metric collection (#11174)

Fixes pip-compile file matcher for metric collection (#11174)

python/lib/dependabot/python/file_parser.rb

@@ -21,6 +21,7 @@ class FileParser < Dependabot::FileParsers::Base
       require_relative "file_parser/pipfile_files_parser"
       require_relative "file_parser/pyproject_files_parser"
       require_relative "file_parser/setup_file_parser"
+      require_relative "file_parser/python_requirement_parser"
 
       DEPENDENCY_GROUP_KEYS = [
         {
@@ -337,7 +338,7 @@ def check_requirements(requirements)
       end
 
       def pipcompile_in_file
-        requirement_files.any? { |f| f.end_with?(".in") }
+        requirement_files.any? { |f| f.name.end_with?(PipCompilePackageManager::MANIFEST_FILENAME) }
       end
 
       def pipenv_files

python/lib/dependabot/python/package_manager.rb

@@ -92,6 +92,7 @@ class PipCompilePackageManager < Dependabot::Ecosystem::VersionManager
       extend T::Sig
 
       NAME = "pip-compile"
+      MANIFEST_FILENAME = ".in"
 
       SUPPORTED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])
 

python/spec/dependabot/python/file_parser_spec.rb

@@ -881,6 +881,14 @@
               )
             end
           end
+
+          it "returns the correct ecosystem and package manager set" do
+            ecosystem = parser.ecosystem
+
+            expect(ecosystem.name).to eq("Python")
+            expect(ecosystem.package_manager.name).to eq("pip-compile")
+            expect(ecosystem.language.name).to eq("python")
+          end
         end
       end