Added test for XBuffer.free for different sizes

Author: freddieknets

tests/test_buffer.py

@@ -4,6 +4,7 @@
 # ########################################### #
 
 import numpy as np
+import pytest
 
 import xobjects as xo
 from xobjects.test_helpers import for_all_test_contexts, requires_context
@@ -94,6 +95,35 @@ def test_free_simple(test_context):
         ch.free_string(offset)
         ch.check()
 
+@for_all_test_contexts
+def test_free(test_context):
+    class CheckFree(xo.Struct):
+        a = xo.Float64
+    ch = CheckFree(a=5, _context=test_context)
+    assert ch._buffer.capacity == 8
+    assert ch._buffer.chunks == []
+    with pytest.raises(ValueError, match="Cannot free outside of buffer"):
+        ch._buffer.free(-2, 8)
+    with pytest.raises(ValueError, match="Cannot free outside of buffer"):
+        ch._buffer.free(0, 10)
+    with pytest.raises(ValueError, match="Cannot free outside of buffer"):
+        ch._buffer.free(7,2)
+    ch._buffer.free(0,4)
+    assert len(ch._buffer.chunks) == 1
+    assert ch._buffer.chunks[0].start == 0
+    assert ch._buffer.chunks[0].end == 4
+    ch._buffer.free(0,4)  # Does nothing
+    ch._buffer.free(2,4)  # Increases free chunk
+    assert len(ch._buffer.chunks) == 1
+    assert ch._buffer.chunks[0].start == 0
+    assert ch._buffer.chunks[0].end == 6
+    ch._buffer.free(7,1)
+    assert len(ch._buffer.chunks) == 2
+    assert ch._buffer.chunks[0].start == 0
+    assert ch._buffer.chunks[0].end == 6
+    assert ch._buffer.chunks[1].start == 7
+    assert ch._buffer.chunks[1].end == 8
+
 
 @for_all_test_contexts
 def test_grow(test_context):