test: add V2NonPartitionedTest

  for ManifestListReader

Author: HeartLinked

test/manifest_list_reader_test.cc

@@ -82,6 +82,48 @@ class ManifestListReaderTest : public TempFileTestBase {
     return manifest_files;
   }
 
+  std::vector<ManifestFile> PrepareV2NonPartitionedTestManifestList() {
+    std::vector<ManifestFile> manifest_files;
+    std::string test_dir_prefix =
+  "/tmp/db/db/v2_non_partitioned_test/metadata/";
+
+    std::vector<std::string> paths = {
+      "ccb6dbcb-0611-48da-be68-bd506ea63188-m0.avro",  
+      "b89a10c9-a7a8-4526-99c5-5587a4ea7527-m0.avro",  
+      "a74d20fa-c800-4706-9ddb-66be15a5ecb0-m0.avro",  
+      "ae7d5fce-7245-4335-9b57-bc598c595c84-m0.avro"   
+    };
+
+    std::vector<int64_t> file_size = {7169, 7170, 7169, 7170};
+
+    std::vector<int64_t> snapshot_id = {
+      251167482216575399,  
+      4248697313956014690,  
+      281757490425433194,  
+      5521202581490753283   
+    };
+
+    for (int i = 0; i < 4; ++i) {
+      ManifestFile manifest_file;
+      manifest_file.manifest_path = test_dir_prefix + paths[i];
+      manifest_file.manifest_length = file_size[i];
+      manifest_file.partition_spec_id = 0;  
+      manifest_file.content = ManifestFile::Content::kData;
+      manifest_file.sequence_number = 4 - i;  
+      manifest_file.min_sequence_number = 4 - i;
+      manifest_file.added_snapshot_id = snapshot_id[i];
+      manifest_file.added_files_count = 1;
+      manifest_file.existing_files_count = 0;
+      manifest_file.deleted_files_count = 0;
+      manifest_file.added_rows_count = 1;
+      manifest_file.existing_rows_count = 0;
+      manifest_file.deleted_rows_count = 0;
+
+      manifest_files.emplace_back(manifest_file);
+    }
+    return manifest_files;
+  }
+
   std::shared_ptr<::arrow::fs::LocalFileSystem> local_fs_;
   std::shared_ptr<FileIO> file_io_;
 };
@@ -100,4 +142,28 @@ TEST_F(ManifestListReaderTest, BasicTest) {
   ASSERT_EQ(read_result.value(), expected_manifest_list);
 }
 
+TEST_F(ManifestListReaderTest, V2NonPartitionedTest) {
+  std::string path = GetResourcePath(
+    "snap-251167482216575399-1-ccb6dbcb-0611-48da-be68-bd506ea63188.avro");   
+
+  auto manifest_reader_result = ManifestListReader::MakeReader(path, file_io_);
+  ASSERT_EQ(manifest_reader_result.has_value(), true);
+
+  auto manifest_reader =
+std::move(manifest_reader_result.value());
+  auto read_result = manifest_reader->Files();
+  ASSERT_EQ(read_result.has_value(), true);
+  ASSERT_EQ(read_result.value().size(), 4);
+
+  auto expected_manifest_list = PrepareV2NonPartitionedTestManifestList();
+  ASSERT_EQ(read_result.value(), expected_manifest_list);
+
+  // test all the manifest files are non-partitioned
+  for (const auto& manifest : read_result.value()) {
+    ASSERT_EQ(manifest.partition_spec_id, 0);
+    ASSERT_TRUE(manifest.partitions.empty());  // 
+    ASSERT_EQ(manifest.content, ManifestFile::Content::kData);
+  }
+}
+
 }  // namespace iceberg