Add multichunk test dataset

Author: Will-Tyler

tests/data/vcf/chr22.vcf.gz

@@ -140,8 +140,17 @@ def vcz_path_cache(vcf_path):
         cache_path.mkdir()
     cached_vcz_path = (cache_path / vcf_path.name).with_suffix(".vcz")
     if not cached_vcz_path.exists():
-        vcf2zarr.convert(
-            [vcf_path], cached_vcz_path, worker_processes=0, local_alleles=False
-        )
+        if vcf_path.name.startswith("chr22"):
+            vcf2zarr.convert(
+                [vcf_path],
+                cached_vcz_path,
+                worker_processes=0,
+                variants_chunk_size=10,
+                samples_chunk_size=10,
+            )
+        else:
+            vcf2zarr.convert(
+                [vcf_path], cached_vcz_path, worker_processes=0, local_alleles=False
+            )
         create_index(cached_vcz_path)
     return cached_vcz_path