From dc28cbe2b4ed77be92ee8b2b69a20689c3bf02a4 Mon Sep 17 00:00:00 2001
From: aktersnurra <gustaf.rydholm@gmail.com>
Date: Sun, 8 Nov 2020 14:54:44 +0100
Subject: new updates

---
 .../tests/support/create_emnist_support_files.py   | 13 ++++----
 src/text_recognizer/tests/test_line_predictor.py   | 35 ++++++++++++++++++++++
 2 files changed, 41 insertions(+), 7 deletions(-)
 create mode 100644 src/text_recognizer/tests/test_line_predictor.py

(limited to 'src/text_recognizer/tests')

diff --git a/src/text_recognizer/tests/support/create_emnist_support_files.py b/src/text_recognizer/tests/support/create_emnist_support_files.py
index 5dd1a81..c04860d 100644
--- a/src/text_recognizer/tests/support/create_emnist_support_files.py
+++ b/src/text_recognizer/tests/support/create_emnist_support_files.py
@@ -2,10 +2,8 @@
 from pathlib import Path
 import shutil
 
-from text_recognizer.datasets.emnist_dataset import (
-    fetch_emnist_dataset,
-    load_emnist_mapping,
-)
+from text_recognizer.datasets.emnist_dataset import EmnistDataset
+from text_recognizer.datasets.util import EmnistMapper
 from text_recognizer.util import write_image
 
 SUPPORT_DIRNAME = Path(__file__).parents[0].resolve() / "emnist"
@@ -16,15 +14,16 @@ def create_emnist_support_files() -> None:
     shutil.rmtree(SUPPORT_DIRNAME, ignore_errors=True)
     SUPPORT_DIRNAME.mkdir()
 
-    dataset = fetch_emnist_dataset(split="byclass", train=False)
-    mapping = load_emnist_mapping()
+    dataset = EmnistDataset(train=False)
+    dataset.load_or_generate_data()
+    mapping = EmnistMapper()
 
     for index in [5, 7, 9]:
         image, label = dataset[index]
         if len(image.shape) == 3:
             image = image.squeeze(0)
         image = image.numpy()
-        label = mapping[int(label)]
+        label = mapping(int(label))
         print(index, label)
         write_image(image, str(SUPPORT_DIRNAME / f"{label}.png"))
 
diff --git a/src/text_recognizer/tests/test_line_predictor.py b/src/text_recognizer/tests/test_line_predictor.py
new file mode 100644
index 0000000..eede4d4
--- /dev/null
+++ b/src/text_recognizer/tests/test_line_predictor.py
@@ -0,0 +1,35 @@
+"""Tests for LinePredictor."""
+import os
+from pathlib import Path
+import unittest
+
+
+import editdistance
+import numpy as np
+
+from text_recognizer.datasets import IamLinesDataset
+from text_recognizer.line_predictor import LinePredictor
+import text_recognizer.util as util
+
+SUPPORT_DIRNAME = Path(__file__).parents[0].resolve() / "support"
+
+os.environ["CUDA_VISIBLE_DEVICES"] = ""
+
+
+class TestEmnistLinePredictor(unittest.TestCase):
+    """Test LinePredictor class on the EmnistLines dataset."""
+
+    def test_filename(self) -> None:
+        """Test that LinePredictor correctly predicts on single images, for several test images."""
+        predictor = LinePredictor(
+            dataset="EmnistLineDataset", network_fn="CNNTransformer"
+        )
+
+        for filename in (SUPPORT_DIRNAME / "emnist_lines").glob("*.png"):
+            pred, conf = predictor.predict(str(filename))
+            true = str(filename.stem)
+            edit_distance = editdistance.eval(pred, true) / len(pred)
+            print(
+                f'Pred: "{pred}" | Confidence: {conf} | True: {true} | Edit distance: {edit_distance}'
+            )
+            self.assertLess(edit_distance, 0.2)
-- 
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