From df3911492af16ebe234d32be4ef3f4a9a7006c41 Mon Sep 17 00:00:00 2001
From: nayef211 <n63ahmed@edu.uwaterloo.ca>
Date: Thu, 3 Feb 2022 18:44:27 -0800
Subject: [PATCH 1/2] added test for yahooanswer

---
 test/datasets/test_yahooanswers.py | 81 ++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 test/datasets/test_yahooanswers.py

diff --git a/test/datasets/test_yahooanswers.py b/test/datasets/test_yahooanswers.py
new file mode 100644
index 0000000000..71ddc6d373
--- /dev/null
+++ b/test/datasets/test_yahooanswers.py
@@ -0,0 +1,81 @@
+import os
+import random
+import string
+import tarfile
+from collections import defaultdict
+from unittest.mock import patch
+
+from parameterized import parameterized
+from torchtext.datasets.yahooanswers import YahooAnswers
+
+from ..common.case_utils import TempDirMixin, zip_equal
+from ..common.torchtext_test_case import TorchtextTestCase
+
+
+def _get_mock_dataset(root_dir):
+    """
+    root_dir: directory to the mocked dataset
+    """
+    base_dir = os.path.join(root_dir, "YahooAnswers")
+    temp_dataset_dir = os.path.join(base_dir, "temp_dataset_dir")
+    os.makedirs(temp_dataset_dir, exist_ok=True)
+
+    seed = 1
+    mocked_data = defaultdict(list)
+    for file_name in ("train.csv", "test.csv"):
+        txt_file = os.path.join(temp_dataset_dir, file_name)
+        with open(txt_file, "w") as f:
+            for i in range(5):
+                label = seed % 10 + 1
+                rand_string = " ".join(
+                    random.choice(string.ascii_letters) for i in range(seed)
+                )
+                dataset_line = (label, f"{rand_string} {rand_string} {rand_string}")
+                # append line to correct dataset split
+                mocked_data[os.path.splitext(file_name)[0]].append(dataset_line)
+                f.write(f'"{label}","{rand_string}","{rand_string}","{rand_string}"\n')
+                seed += 1
+
+    compressed_dataset_path = os.path.join(base_dir, "yahoo_answers_csv.tar.gz")
+    # create tar file from dataset folder
+    with tarfile.open(compressed_dataset_path, "w:gz") as tar:
+        tar.add(temp_dataset_dir, arcname="yahoo_answers_csv")
+
+    return mocked_data
+
+
+class TestYahooAnswers(TempDirMixin, TorchtextTestCase):
+    root_dir = None
+    samples = []
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.root_dir = cls.get_base_temp_dir()
+        cls.samples = _get_mock_dataset(cls.root_dir)
+        cls.patcher = patch(
+            "torchdata.datapipes.iter.util.cacheholder._hash_check", return_value=True
+        )
+        cls.patcher.start()
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.patcher.stop()
+        super().tearDownClass()
+
+    @parameterized.expand(["train", "test"])
+    def test_amazon_review_polarity(self, split):
+        dataset = YahooAnswers(root=self.root_dir, split=split)
+
+        samples = list(dataset)
+        expected_samples = self.samples[split]
+        for sample, expected_sample in zip_equal(samples, expected_samples):
+            self.assertEqual(sample, expected_sample)
+
+    @parameterized.expand(["train", "test"])
+    def test_amazon_review_polarity_split_argument(self, split):
+        dataset1 = YahooAnswers(root=self.root_dir, split=split)
+        (dataset2,) = YahooAnswers(root=self.root_dir, split=(split,))
+
+        for d1, d2 in zip_equal(dataset1, dataset2):
+            self.assertEqual(d1, d2)

From 3c95f365c100648dc34554b989dee2f75a9e9562 Mon Sep 17 00:00:00 2001
From: nayef211 <n63ahmed@edu.uwaterloo.ca>
Date: Thu, 3 Feb 2022 19:46:55 -0800
Subject: [PATCH 2/2] Updated test names

---
 test/datasets/test_yahooanswers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/datasets/test_yahooanswers.py b/test/datasets/test_yahooanswers.py
index 71ddc6d373..30f537c28a 100644
--- a/test/datasets/test_yahooanswers.py
+++ b/test/datasets/test_yahooanswers.py
@@ -64,7 +64,7 @@ def tearDownClass(cls):
         super().tearDownClass()
 
     @parameterized.expand(["train", "test"])
-    def test_amazon_review_polarity(self, split):
+    def test_yahoo_answers(self, split):
         dataset = YahooAnswers(root=self.root_dir, split=split)
 
         samples = list(dataset)
@@ -73,7 +73,7 @@ def test_amazon_review_polarity(self, split):
             self.assertEqual(sample, expected_sample)
 
     @parameterized.expand(["train", "test"])
-    def test_amazon_review_polarity_split_argument(self, split):
+    def test_yahoo_answers_split_argument(self, split):
         dataset1 = YahooAnswers(root=self.root_dir, split=split)
         (dataset2,) = YahooAnswers(root=self.root_dir, split=(split,))