Fix test failures on big-endian systems

Closes: #1104240

debian/changelog

+json-tricks (3.17.3-2) UNRELEASED; urgency=medium
+
+  [ Chris Hofstaedtler ]
+  * Fix test failures on big-endian systems (closes: #1104240).
+
+ -- Colin Watson <cjwatson@debian.org>  Mon, 28 Apr 2025 00:11:13 +0100
+
 json-tricks (3.17.3-1) unstable; urgency=medium
 
   * Team upload.

debian/patches/series

 fix-pytest-warnings.patch
+tests-endian.patch

debian/patches/tests-endian.patch

+From: Chris Hofstaedtler <zeha@debian.org>
+Date: Mon, 28 Apr 2025 00:08:51 +0100
+Subject: Fix test failures on big-endian systems
+
+Test data assumes tests are running on little-endian systems, or at least
+that the native endianness is little. Obviously this breaks on big-endian
+systems like s390x. Make the assumption explicit by adding "endian": "little"
+to the to-decoded test-data.
+
+Fixes FTBFS and CI test failures on s390x.
+
+Bug: https://github.com/mverleg/pyjson_tricks/issues/88
+Bug-Debian: https://bugs.debian.org/1104240
+Last-Update: 2025-04-28
+---
+ tests/test_np.py | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tests/test_np.py b/tests/test_np.py
+index b7857ea..7b459e2 100644
+--- a/tests/test_np.py
++++ b/tests/test_np.py
+@@ -310,7 +310,7 @@ def test_encode_compact_no_inline_compression():
+ 
+ def test_decode_compact_mixed_compactness():
+ 	json = '[{"__ndarray__": "b64:AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEAAAAAAAAA' \
+-		'UQAAAAAAAABhAAAAAAAAAHEAAAAAAAAAgQA==", "dtype": "float64", "shape": [2, 4], "Corder": ' \
++		'UQAAAAAAAABhAAAAAAAAAHEAAAAAAAAAgQA==", "dtype": "float64", "shape": [2, 4], "endian": "little", "Corder": ' \
+ 		'true}, {"__ndarray__": [3.141592653589793, 2.718281828459045], "dtype": "float64", "shape": [2]}]'
+ 	data = loads(json)
+ 	assert_equal(data[0], array([[1.0, 2.0, 3.0, 4.0], [5.0, 6.0, 7.0, 8.0]]), array([pi, exp(1)]))
+@@ -343,14 +343,14 @@ def test_decode_without_endianness():
+ 
+ 
+ def test_decode_compact_inline_compression():
+-	json = '[{"__ndarray__": "b64.gz:H4sIAAAAAAAC/2NgAIEP9gwQ4AChOKC0AJQWgdISUFoGSitAaSUorQKl1aC0BpTWgtI6UFoPShs4AABmfqWAgAAAAA==", "dtype": "float64", "shape": [4, 4], "Corder": true}]'
++	json = '[{"__ndarray__": "b64.gz:H4sIAAAAAAAC/2NgAIEP9gwQ4AChOKC0AJQWgdISUFoGSitAaSUorQKl1aC0BpTWgtI6UFoPShs4AABmfqWAgAAAAA==", "dtype": "float64", "shape": [4, 4], "Corder": true, "endian": "little"}]'
+ 	data = loads(json)
+ 	assert_equal(data[0], array([[1.0, 2.0, 3.0, 4.0], [5.0, 6.0, 7.0, 8.0], [9.0, 10.0, 11.0, 12.0], [13.0, 14.0, 15.0, 16.0]]))
+ 
+ 
+ def test_decode_compact_no_inline_compression():
+ 	json = '[{"__ndarray__": "b64:AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEA=", ' \
+-		'"dtype": "float64", "shape": [2, 2], "Corder": true}]'
++		'"dtype": "float64", "shape": [2, 2], "Corder": true, "endian": "little"}]'
+ 	data = loads(json)
+ 	assert_equal(data[0], array([[1.0, 2.0], [3.0, 4.0]]))
+