sage.rings.padics.padic_lattice_element_test: new pytests

Move some of the TestSuite() tests from a TESTS block to pytest.
These are slow, and not really meant for end-user consumption,
so are more appropriate here.

Author: orlitzky

src/sage/rings/padics/padic_lattice_element_test.py

@@ -0,0 +1,27 @@
+import pytest
+import warnings
+
+
+def test_padic_lattice_element():
+    r"""
+    Run the ``TestSuite()`` for some examples that previously
+    lived in the TESTS:: block of the padic_lattice_element module.
+    """
+    from sage.misc.sage_unittest import TestSuite
+    from sage.rings.padics.factory import ZpLC, ZpLF, QpLC, QpLF
+
+    with warnings.catch_warnings(category=FutureWarning):
+        warnings.filterwarnings("ignore", category=FutureWarning)
+        # These all raise FutureWarnings
+        R1 = ZpLC(2)
+        R2 = ZpLF(2)
+        R3 = QpLC(2)
+        R4 = QpLF(2)
+
+    for R in (R1, R2, R3, R4):
+        # Only do a few runs, _test_matrix_smith() in particular is
+        # sloooooow.
+        TestSuite(R).run(verbose=True,
+                         raise_on_failure=True,
+                         skip="_test_teichmuller",
+                         max_runs=8)