Add support for *.MODULE.bazel files in file_fetcher

Co-authored-by: robaiken <6567647+robaiken@users.noreply.github.com>

Author: Copilot

bazel/lib/dependabot/bazel/file_fetcher.rb

@@ -21,7 +21,9 @@ def self.required_files_message
 
       sig { override.params(filenames: T::Array[String]).returns(T::Boolean) }
       def self.required_files_in?(filenames)
-        filenames.any? { |name| WORKSPACE_FILES.include?(name) || MODULE_FILES.include?(name) }
+        filenames.any? do |name|
+          WORKSPACE_FILES.include?(name) || MODULE_FILES.include?(name) || name.end_with?(".MODULE.bazel")
+        end
       end
 
       sig { override.returns(T::Array[DependencyFile]) }
@@ -74,11 +76,22 @@ def workspace_files
       def module_files
         files = T.let([], T::Array[DependencyFile])
 
+        # Fetch explicit MODULE.bazel files
         MODULE_FILES.each do |filename|
           file = fetch_file_if_present(filename)
           files << file if file
         end
 
+        # Fetch all *.MODULE.bazel files
+        repo_contents(raise_errors: false).each do |item|
+          next unless item.type == "file"
+          next unless item.name.end_with?(".MODULE.bazel")
+          next if MODULE_FILES.include?(item.name) # Skip if already fetched
+
+          file = fetch_file_if_present(item.name)
+          files << file if file
+        end
+
         files
       end
 

bazel/spec/dependabot/bazel/file_fetcher_spec.rb

@@ -59,6 +59,12 @@
       it { is_expected.to be(true) }
     end
 
+    context "with a *.MODULE.bazel file" do
+      let(:filenames) { %w(deps.MODULE.bazel README.md) }
+
+      it { is_expected.to be(true) }
+    end
+
     context "without any Bazel files" do
       let(:filenames) { %w(README.md package.json) }
 
@@ -115,6 +121,33 @@
       end
     end
 
+    context "with MODULE.bazel and *.MODULE.bazel files" do
+      before do
+        stub_request(:get, url + "?ref=sha")
+          .to_return(
+            status: 200,
+            body: fixture("github", "contents_bazel_with_additional_module.json"),
+            headers: { "content-type" => "application/json" }
+          )
+        stub_request(:get, url + "MODULE.bazel?ref=sha")
+          .to_return(
+            status: 200,
+            body: fixture("github", "contents_bazel_module_file.json"),
+            headers: { "content-type" => "application/json" }
+          )
+        stub_request(:get, url + "deps.MODULE.bazel?ref=sha")
+          .to_return(
+            status: 200,
+            body: fixture("github", "contents_bazel_deps_module_file.json"),
+            headers: { "content-type" => "application/json" }
+          )
+      end
+
+      it "fetches all MODULE.bazel files including *.MODULE.bazel files" do
+        expect(fetched_files.map(&:name)).to include("MODULE.bazel", "deps.MODULE.bazel")
+      end
+    end
+
     context "when beta ecosystems are not allowed" do
       before do
         allow(file_fetcher_instance).to receive(:allow_beta_ecosystems?).and_return(false)

bazel/spec/fixtures/github/contents_bazel_deps_module_file.json

@@ -0,0 +1,13 @@
+{
+  "name": "deps.MODULE.bazel",
+  "path": "deps.MODULE.bazel",
+  "sha": "def456",
+  "size": 567,
+  "url": "https://api.github.com/repos/example/repo/contents/deps.MODULE.bazel?ref=sha",
+  "html_url": "https://github.com/example/repo/blob/sha/deps.MODULE.bazel",
+  "git_url": "https://api.github.com/repos/example/repo/git/blobs/def456",
+  "download_url": "https://raw.githubusercontent.com/example/repo/sha/deps.MODULE.bazel",
+  "type": "file",
+  "content": "YmF6ZWxfZGVwKG5hbWUgPSAiZGVwcyIsIHZlcnNpb24gPSAiMS4wLjAiKQ==\n",
+  "encoding": "base64"
+}

bazel/spec/fixtures/github/contents_bazel_with_additional_module.json

@@ -0,0 +1,35 @@
+[
+  {
+    "name": "MODULE.bazel",
+    "path": "MODULE.bazel",
+    "sha": "abc123",
+    "size": 1234,
+    "url": "https://api.github.com/repos/example/repo/contents/MODULE.bazel?ref=sha",
+    "html_url": "https://github.com/example/repo/blob/sha/MODULE.bazel",
+    "git_url": "https://api.github.com/repos/example/repo/git/blobs/abc123",
+    "download_url": "https://raw.githubusercontent.com/example/repo/sha/MODULE.bazel",
+    "type": "file"
+  },
+  {
+    "name": "deps.MODULE.bazel",
+    "path": "deps.MODULE.bazel",
+    "sha": "def456",
+    "size": 567,
+    "url": "https://api.github.com/repos/example/repo/contents/deps.MODULE.bazel?ref=sha",
+    "html_url": "https://github.com/example/repo/blob/sha/deps.MODULE.bazel",
+    "git_url": "https://api.github.com/repos/example/repo/git/blobs/def456",
+    "download_url": "https://raw.githubusercontent.com/example/repo/sha/deps.MODULE.bazel",
+    "type": "file"
+  },
+  {
+    "name": "README.md",
+    "path": "README.md",
+    "sha": "ghi789",
+    "size": 890,
+    "url": "https://api.github.com/repos/example/repo/contents/README.md?ref=sha",
+    "html_url": "https://github.com/example/repo/blob/sha/README.md",
+    "git_url": "https://api.github.com/repos/example/repo/git/blobs/ghi789",
+    "download_url": "https://raw.githubusercontent.com/example/repo/sha/README.md",
+    "type": "file"
+  }
+]