Add test for Jagged arrays of type Boolean

tests/test_write.py

@@ -1891,6 +1891,24 @@ def test_jagged_uproot_i4(tmp_path):
         for j in range(len(array[i])):
             assert(array[i][j] == a[i][j])
 
+#Unable to read back in ROOT
+def test_jagged_uproot_bool(tmp_path):
+    filename = join(str(tmp_path), "example.root")
+
+    a = awkward.fromiter([[0],
+                          [1, 0],
+                          [1, 1, 0]])
+
+    with uproot.recreate(filename, compression=None) as f:
+        f["t"] = uproot.newtree({"branch": uproot.newbranch(numpy.dtype(">?"), dependence="n")})
+        f["t"].extend({"branch": a, "n": [1, 2, 3]})
+
+    f = uproot.open(filename)
+    array = f["t"].array(["branch"])
+    for i in range(len(array)):
+        for j in range(len(array[i])):
+            assert(array[i][j] == a[i][j])
+
 def test_jagged_i8(tmp_path):
     filename = join(str(tmp_path), "example.root")