python-jsonschema#708 - varying length fix

From one version of Python to another, the "type" that appears in brackets may be of differing lengths.  (E.g., `JSONDecodeError` in Python 3, but `ValueError` in Python 2.)  That would make the length of the Unicode bar different under each version of Python.  When these tests were corrected to work under Python 2, they wouldn't work under Python 3 and vice versa.  Therefore, it's simpler to break the single assertions into two shorter ones that use very little of the bar characters.

Author: sloanlance

jsonschema/tests/test_cli.py

@@ -460,7 +460,11 @@ def test_instance_is_invalid_JSON_pretty_output(self):
         )
         self.assertFalse(stdout)
         self.assertIn(
-            "(some_instance)════════════════════════════════════════╕\nTraceback (most recent call last):\n",
+            "(some_instance)═",
+            stderr,
+        )
+        self.assertIn(
+            "═╕\nTraceback (most recent call last):\n",
             stderr,
         )
         self.assertNotIn("some_schema", stderr)
@@ -491,7 +495,11 @@ def test_instance_is_invalid_JSON_on_stdin_pretty_output(self):
         )
         self.assertFalse(stdout)
         self.assertIn(
-            "(<stdin>)══════════════════════════════════════════════╕\nTraceback (most recent call last):\n",
+            "(<stdin>)═",
+            stderr,
+        )
+        self.assertIn(
+            "═╕\nTraceback (most recent call last):\n",
             stderr,
         )
         self.assertNotIn("some_schema", stderr)
@@ -520,7 +528,11 @@ def test_schema_is_invalid_JSON_pretty_output(self):
         )
         self.assertFalse(stdout)
         self.assertIn(
-            "(some_schema)══════════════════════════════════════════╕\nTraceback (most recent call last):\n",
+            "(some_schema)═",
+            stderr,
+        )
+        self.assertIn(
+            "═╕\nTraceback (most recent call last):\n",
             stderr,
         )
 
@@ -556,7 +568,11 @@ def test_schema_and_instance_are_both_invalid_JSON_pretty_output(self):
         )
         self.assertFalse(stdout)
         self.assertIn(
-            "(some_schema)══════════════════════════════════════════╕\nTraceback (most recent call last):\n",
+            "(some_schema)═",
+            stderr,
+        )
+        self.assertIn(
+            "═╕\nTraceback (most recent call last):\n",
             stderr,
         )
         self.assertNotIn("some_instance", stderr)