Issue #19592: Use specific asserts in lib2to3 tests.

1 files changed, 8 insertions, 8 deletions

diff --git a/Lib/lib2to3/tests/test_pytree.py b/Lib/lib2to3/tests/test_pytree.py
index a2ab1f3..4d585a8 100644
--- a/Lib/lib2to3/tests/test_pytree.py
+++ b/Lib/lib2to3/tests/test_pytree.py
@@ -143,12 +143,12 @@ class TestNodes(support.TestCase):
         l3 = pytree.Leaf(100, "bar")
         n1 = pytree.Node(1000, [l1, l2, l3])
         self.assertEqual(n1.children, [l1, l2, l3])
-        self.assertTrue(isinstance(n1.children, list))
+        self.assertIsInstance(n1.children, list)
         self.assertFalse(n1.was_changed)
         l2new = pytree.Leaf(100, "-")
         l2.replace(l2new)
         self.assertEqual(n1.children, [l1, l2new, l3])
-        self.assertTrue(isinstance(n1.children, list))
+        self.assertIsInstance(n1.children, list)
         self.assertTrue(n1.was_changed)
 
     def test_replace_with_list(self):
@@ -159,7 +159,7 @@ class TestNodes(support.TestCase):
 
         l2.replace([pytree.Leaf(100, "*"), pytree.Leaf(100, "*")])
         self.assertEqual(str(n1), "foo**bar")
-        self.assertTrue(isinstance(n1.children, list))
+        self.assertIsInstance(n1.children, list)
 
     def test_leaves(self):
         l1 = pytree.Leaf(100, "foo")
@@ -330,7 +330,7 @@ class TestNodes(support.TestCase):
         n2 = pytree.Node(1000, [])
         p1 = pytree.Node(1000, [n1, n2])
 
-        self.assertTrue(n1.next_sibling is n2)
+        self.assertIs(n1.next_sibling, n2)
         self.assertEqual(n2.next_sibling, None)
         self.assertEqual(p1.next_sibling, None)
 
@@ -339,7 +339,7 @@ class TestNodes(support.TestCase):
         l2 = pytree.Leaf(100, "b")
         p1 = pytree.Node(1000, [l1, l2])
 
-        self.assertTrue(l1.next_sibling is l2)
+        self.assertIs(l1.next_sibling, l2)
         self.assertEqual(l2.next_sibling, None)
         self.assertEqual(p1.next_sibling, None)
 
@@ -348,7 +348,7 @@ class TestNodes(support.TestCase):
         n2 = pytree.Node(1000, [])
         p1 = pytree.Node(1000, [n1, n2])
 
-        self.assertTrue(n2.prev_sibling is n1)
+        self.assertIs(n2.prev_sibling, n1)
         self.assertEqual(n1.prev_sibling, None)
         self.assertEqual(p1.prev_sibling, None)
 
@@ -357,7 +357,7 @@ class TestNodes(support.TestCase):
         l2 = pytree.Leaf(100, "b")
         p1 = pytree.Node(1000, [l1, l2])
 
-        self.assertTrue(l2.prev_sibling is l1)
+        self.assertIs(l2.prev_sibling, l1)
         self.assertEqual(l1.prev_sibling, None)
         self.assertEqual(p1.prev_sibling, None)
 
@@ -430,7 +430,7 @@ class TestPatterns(support.TestCase):
         r = {}
         self.assertTrue(pw.match_seq([l1, l3], r))
         self.assertEqual(r, {"pl": l3, "pw": [l1, l3]})
-        self.assertTrue(r["pl"] is l3)
+        self.assertIs(r["pl"], l3)
         r = {}
 
     def test_generate_matches(self):