From 48bf3f783e202ce3a62500377a141300506c6784 Mon Sep 17 00:00:00 2001
From: Jerome Kelleher <jk@well.ox.ac.uk>
Date: Mon, 10 Mar 2025 10:52:54 +0000
Subject: [PATCH 1/2] Fix stupid du test

Closes #330
---
 tests/test_core.py | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/tests/test_core.py b/tests/test_core.py
index 2f4aa838..a4cca200 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -1,3 +1,4 @@
+import subprocess
 import sys
 
 import numpy as np
@@ -231,16 +232,14 @@ def test_examples(self, chunk_size, size, start, stop):
 
 @pytest.mark.skipif(sys.platform != "linux", reason="Only valid on Linux")
 @pytest.mark.parametrize(
-    ("path", "expected"),
+    "path",
     [
-        # NOTE: this data is generated using du -sb on a Linux system.
-        # It works in CI on Linux, but it'll probably break at some point.
-        # It's also necessary to update these numbers each time a new data
-        # file gets added
-        ("tests/data", 4983044),
-        ("tests/data/vcf", 4970907),
-        ("tests/data/vcf/sample.vcf.gz", 1089),
+        "tests/data",
+        "tests/data/vcf",
+        "tests/data/vcf/sample.vcf.gz",
     ],
 )
-def test_du(path, expected):
-    assert core.du(path) == expected
+def test_du(path):
+    s = subprocess.check_output(["du", "-sb", "--apparent-size", str(path)]).decode()
+    value = int(s.split()[0])
+    assert core.du(path) == value

From 46de3af27cf6318735a7dd8b34bbf7c4a6b35bd1 Mon Sep 17 00:00:00 2001
From: Jerome Kelleher <jk@well.ox.ac.uk>
Date: Mon, 10 Mar 2025 14:47:43 +0000
Subject: [PATCH 2/2] Copy directory tree to /tmp

---
 tests/test_core.py | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/tests/test_core.py b/tests/test_core.py
index a4cca200..e36904ce 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -1,5 +1,7 @@
+import pathlib
 import subprocess
 import sys
+import tempfile
 
 import numpy as np
 import pytest
@@ -240,6 +242,11 @@ def test_examples(self, chunk_size, size, start, stop):
     ],
 )
 def test_du(path):
-    s = subprocess.check_output(["du", "-sb", "--apparent-size", str(path)]).decode()
-    value = int(s.split()[0])
-    assert core.du(path) == value
+    with tempfile.TemporaryDirectory() as tmp_dir:
+        subprocess.check_call(["cp", "-pR", "tests", tmp_dir])
+        copy_path = pathlib.Path(tmp_dir) / path
+        s = subprocess.check_output(
+            ["du", "-sb", "--apparent-size", str(copy_path)]
+        ).decode()
+        value = int(s.split()[0])
+        assert core.du(path) == value