1 files changed, 36 insertions, 0 deletions
diff --git a/tests/integration/test_repeated_posts_setting.py b/tests/integration/test_repeated_posts_setting.py
new file mode 100644
index 0000000..2a03338
--- /dev/null
+++ b/tests/integration/test_repeated_posts_setting.py
@@ -0,0 +1,36 @@
+"""
+Duplicate POSTS in settings.
+
+Should not read each post twice, which causes conflicts.
+"""
+
+import pytest
+
+from nikola import __main__
+
+from .helper import append_config, cd
+from .test_demo_build import prepare_demo_site
+from .test_empty_build import (  # NOQA
+    test_archive_exists,
+    test_avoid_double_slash_in_rss,
+    test_check_files,
+    test_check_links,
+    test_index_in_sitemap,
+)
+
+
+@pytest.fixture(scope="module")
+def build(target_dir):
+    """Fill the site with demo content and build it."""
+    prepare_demo_site(target_dir)
+
+    append_config(
+        target_dir,
+        """
+POSTS = (("posts/*.txt", "posts", "post.tmpl"),
+         ("posts/*.txt", "posts", "post.tmpl"))
+""",
+    )
+
+    with cd(target_dir):
+        __main__.main(["build"])