1 files changed, 45 insertions, 0 deletions
diff --git a/tests/test_extensions/test_ext_extlinks.py b/tests/test_extensions/test_ext_extlinks.py
new file mode 100644
index 0000000..7634db6
--- /dev/null
+++ b/tests/test_extensions/test_ext_extlinks.py
@@ -0,0 +1,45 @@
+import pytest
+
+
+@pytest.mark.sphinx('html', testroot='ext-extlinks-hardcoded-urls',
+                    confoverrides={'extlinks_detect_hardcoded_links': False})
+def test_extlinks_detect_candidates(app, warning):
+    app.build()
+    assert warning.getvalue() == ''
+
+
+@pytest.mark.sphinx('html', testroot='ext-extlinks-hardcoded-urls')
+def test_replaceable_uris_emit_extlinks_warnings(app, warning):
+    app.build()
+    warning_output = warning.getvalue()
+
+    # there should be exactly three warnings for replaceable URLs
+    message = (
+        "index.rst:%d: WARNING: hardcoded link 'https://github.com/sphinx-doc/sphinx/issues/1' "
+        "could be replaced by an extlink (try using '%s' instead)"
+    )
+    assert message % (11, ":issue:`1`") in warning_output
+    assert message % (13, ":issue:`inline replaceable link <1>`") in warning_output
+    assert message % (15, ":issue:`replaceable link <1>`") in warning_output
+
+
+@pytest.mark.sphinx('html', testroot='ext-extlinks-hardcoded-urls-multiple-replacements')
+def test_all_replacements_suggested_if_multiple_replacements_possible(app, warning):
+    app.build()
+    warning_output = warning.getvalue()
+    # there should be six warnings for replaceable URLs, three pairs per link
+    assert warning_output.count("WARNING: hardcoded link") == 6
+    message = (
+        "index.rst:%d: WARNING: hardcoded link 'https://github.com/octocat' "
+        "could be replaced by an extlink (try using '%s' instead)"
+    )
+    assert message % (14, ":user:`octocat`") in warning_output
+    assert message % (16, ":user:`inline replaceable link <octocat>`") in warning_output
+    assert message % (18, ":user:`replaceable link <octocat>`") in warning_output
+    message = (
+        "index.rst:%d: WARNING: hardcoded link 'https://github.com/octocat' "
+        "could be replaced by an extlink (try using '%s' instead)"
+    )
+    assert message % (14, ":repo:`octocat`") in warning_output
+    assert message % (16, ":repo:`inline replaceable link <octocat>`") in warning_output
+    assert message % (18, ":repo:`replaceable link <octocat>`") in warning_output