From 6278a2a262b63faaf47eb2371f6bcb5b6e3ff118 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 2 Apr 2018 12:36:21 -0400
Subject: [PATCH] Remove contrib/jsonb_plpython's tests for infinity and NaN
 conversions.

These tests don't work reliably with pre-2.6 Python versions, since
Python code like float('inf') was not guaranteed to work before that,
even granting an IEEE-compliant platform.

Since there's no explicit handling of these cases in jsonb_plpython,
we're not adding any real code coverage by testing them, and thus
it doesn't seem to make sense to go to any great lengths to work
around the test instability.

Discussion: https://postgr.es/m/E1f1AMU-00031c-9N@gemulon.postgresql.org
---
 .../expected/jsonb_plpython.out               | 40 -------------------
 contrib/jsonb_plpython/sql/jsonb_plpython.sql | 35 ----------------
 2 files changed, 75 deletions(-)

diff --git a/contrib/jsonb_plpython/expected/jsonb_plpython.out b/contrib/jsonb_plpython/expected/jsonb_plpython.out
index 22a7e53b69..b491fe9cc6 100644
--- a/contrib/jsonb_plpython/expected/jsonb_plpython.out
+++ b/contrib/jsonb_plpython/expected/jsonb_plpython.out
@@ -236,46 +236,6 @@ SELECT roundtrip('["string", "string2"]'::jsonb);
  ["string", "string2"]
 (1 row)
 
--- test python infinity -> jsonb
-CREATE FUNCTION test1inf() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('inf')
-print(x)
-return x
-$$;
-SELECT test1inf();
-ERROR:  could not convert value "inf" to jsonb
-CONTEXT:  while creating return value
-PL/Python function "test1inf"
--- test python -infinity -> jsonb
-CREATE FUNCTION test2inf() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('-inf')
-print(x)
-return x
-$$;
-SELECT test2inf();
-ERROR:  could not convert value "-inf" to jsonb
-CONTEXT:  while creating return value
-PL/Python function "test2inf"
--- test python NaN -> jsonb
-CREATE FUNCTION test1nan() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('nan')
-return x
-$$;
-SELECT test1nan();
- test1nan 
-----------
- NaN
-(1 row)
-
 -- complex numbers -> jsonb
 CREATE FUNCTION testComplexNumbers() RETURNS jsonb
 LANGUAGE plpythonu
diff --git a/contrib/jsonb_plpython/sql/jsonb_plpython.sql b/contrib/jsonb_plpython/sql/jsonb_plpython.sql
index b4b0820afe..2ee1bca0a9 100644
--- a/contrib/jsonb_plpython/sql/jsonb_plpython.sql
+++ b/contrib/jsonb_plpython/sql/jsonb_plpython.sql
@@ -127,41 +127,6 @@ SELECT roundtrip('[1, true]'::jsonb);
 SELECT roundtrip('[true, "string"]'::jsonb);
 SELECT roundtrip('["string", "string2"]'::jsonb);
 
--- test python infinity -> jsonb
-CREATE FUNCTION test1inf() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('inf')
-print(x)
-return x
-$$;
-
-SELECT test1inf();
-
--- test python -infinity -> jsonb
-CREATE FUNCTION test2inf() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('-inf')
-print(x)
-return x
-$$;
-
-SELECT test2inf();
-
--- test python NaN -> jsonb
-CREATE FUNCTION test1nan() RETURNS jsonb
-LANGUAGE plpythonu
-TRANSFORM FOR TYPE jsonb
-AS $$
-x = float('nan')
-return x
-$$;
-
-SELECT test1nan();
-
 -- complex numbers -> jsonb
 CREATE FUNCTION testComplexNumbers() RETURNS jsonb
 LANGUAGE plpythonu
-- 
2.40.0