tests: Fix pdfjs broken installation if bundled available

See #5752

(cherry picked from commit 5181b6084df972f2ba0484086119797797012e1f)

1 files changed, 12 insertions, 9 deletions

diff --git a/tests/unit/browser/test_pdfjs.py b/tests/unit/browser/test_pdfjs.py
index d05ff1fc0..bf49098c4 100644
--- a/tests/unit/browser/test_pdfjs.py
+++ b/tests/unit/browser/test_pdfjs.py
@@ -52,15 +52,6 @@ def test_generate_pdfjs_page(available, snippet, monkeypatch):
     assert snippet in content
 
 
-def test_broken_installation(data_tmpdir, monkeypatch):
-    """Make sure we don't crash with a broken local installation."""
-    monkeypatch.setattr(pdfjs, '_SYSTEM_PATHS', [])
-    (data_tmpdir / 'pdfjs' / 'pdf.js').ensure()  # But no viewer.html
-
-    content = pdfjs.generate_pdfjs_page('example.pdf', QUrl())
-    assert '<h1>No pdf.js installation found</h1>' in content
-
-
 # Note that we got double protection, once because we use QUrl.FullyEncoded and
 # because we use qutebrowser.utils.javascript.to_js. Characters like " are
 # already replaced by QUrl.
@@ -166,6 +157,18 @@ class TestResources:
         expected = 'OSError while reading PDF.js file: Message'
         assert caplog.messages == [expected]
 
+    def test_broken_installation(self, data_tmpdir, tmpdir, monkeypatch,
+                                 read_file_mock):
+        """Make sure we don't crash with a broken local installation."""
+        monkeypatch.setattr(pdfjs, '_SYSTEM_PATHS', [])
+        monkeypatch.setattr(pdfjs.os.path, 'expanduser', lambda _in: tmpdir / 'fallback')
+        read_file_mock.side_effect = FileNotFoundError
+
+        (data_tmpdir / 'pdfjs' / 'pdf.js').ensure()  # But no viewer.html
+
+        content = pdfjs.generate_pdfjs_page('example.pdf', QUrl())
+        assert '<h1>No pdf.js installation found</h1>' in content
+
 
 @pytest.mark.parametrize('path, expected', [
     ('web/viewer.js', 'viewer.js'),