add test for export_model (nyu-mll#1259)

tests/proj/main/test_export_model.py

@@ -0,0 +1,33 @@
+import os
+import pytest
+from transformers import BertPreTrainedModel, BertTokenizer, RobertaForMaskedLM, RobertaTokenizer
+
+import jiant.utils.python.io as py_io
+from jiant.proj.main.export_model import export_model
+
+
+@pytest.mark.parametrize(
+    "model_type, model_class, tokenizer_class, hf_model_name",
+    [
+        ("bert-base-cased", BertPreTrainedModel, BertTokenizer, "bert-base-cased"),
+        (
+            "roberta-med-small-1M-1",
+            RobertaForMaskedLM,
+            RobertaTokenizer,
+            "nyu-mll/roberta-med-small-1M-1",
+        ),
+    ],
+)
+def test_export_model(tmp_path, model_type, model_class, tokenizer_class, hf_model_name):
+    export_model(
+        model_type=model_type,
+        output_base_path=tmp_path,
+        model_class=model_class,
+        tokenizer_class=tokenizer_class,
+        hf_model_name=hf_model_name,
+    )
+    read_config = py_io.read_json(os.path.join(tmp_path, f"config.json"))
+    assert read_config["model_type"] == model_type
+    assert read_config["model_path"] == os.path.join(tmp_path, "model", f"{model_type}.p")
+    assert read_config["model_config_path"] == os.path.join(tmp_path, "model", f"{model_type}.json")
+    assert read_config["model_tokenizer_path"] == os.path.join(tmp_path, "tokenizer")