From 52483072dcab45dba45643ee7ef105b3087330ce Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <jim@purplerock.ca>
Date: Fri, 21 Jul 2017 16:40:20 -0700
Subject: [PATCH] Add a differential test that checks tesseract uses supplied
 word list

---
 tests/resources/crom.png | Bin 0 -> 1374 bytes
 tests/test_main.py       |  26 ++++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 tests/resources/crom.png

diff --git a/tests/resources/crom.png b/tests/resources/crom.png
new file mode 100644
index 0000000000000000000000000000000000000000..8ce51f0eded005f7f031a4941a2db393e88cdb5f
GIT binary patch
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diff --git a/tests/test_main.py b/tests/test_main.py
index 8193a1a8..79a54002 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -786,6 +786,32 @@ THIS FILE IS INVALID
     assert p.returncode == ExitCode.invalid_config
 
 
+def test_user_words(resources, outdir):
+    word_list = outdir / 'wordlist.txt'
+    sidecar_before = outdir / 'sidecar_before.txt'
+    sidecar_after = outdir / 'sidecar_after.txt'
+
+    check_ocrmypdf(
+        resources / 'crom.png', outdir / 'out.pdf',
+        '--image-dpi', 150,
+        '--sidecar', sidecar_before
+    )
+
+    assert 'cromulent' not in sidecar_before.open().read()
+
+    with word_list.open('w') as f:
+        f.write('cromulent\n')  # a perfectly cromulent word
+
+    check_ocrmypdf(
+        resources / 'crom.png', outdir / 'out.pdf',
+        '--image-dpi', 150,
+        '--sidecar', sidecar_after,
+        '--user-words', word_list
+    )
+
+    assert 'cromulent' in sidecar_after.open().read()
+
+
 def test_form_xobject(spoof_tesseract_noop, resources, outpdf):
     check_ocrmypdf(resources / 'formxobject.pdf', outpdf,
                    '--force-ocr',