diff --git a/tests/integration/test_array.py b/tests/integration/test_array.py
index 9973539a..66e76731 100644
--- a/tests/integration/test_array.py
+++ b/tests/integration/test_array.py
@@ -3,7 +3,7 @@
 
 from guppylang.decorator import guppy
 from guppylang.module import GuppyModule
-from guppylang.std.builtins import array, owned, mem_swap
+from guppylang.std.builtins import array, owned, mem_swap, py
 from tests.util import compile_guppy
 
 from guppylang.std.quantum import qubit, discard
@@ -113,7 +113,7 @@ def test_linear_subscript(validate):
     def foo(q: qubit) -> None: ...
 
     @guppy(module)
-    def main(qs: array[qubit, 42] @owned, i: int) -> array[qubit, 42]:
+    def main(qs: array[qubit, 42] @ owned, i: int) -> array[qubit, 42]:
         foo(qs[i])
         return qs
 
@@ -142,7 +142,7 @@ def test_multi_subscripts(validate):
     def foo(q1: qubit, q2: qubit) -> None: ...
 
     @guppy(module)
-    def main(qs: array[qubit, 42] @owned) -> array[qubit, 42]:
+    def main(qs: array[qubit, 42] @ owned) -> array[qubit, 42]:
         foo(qs[0], qs[1])
         foo(qs[0], qs[0])  # Will panic at runtime
         return qs
@@ -163,7 +163,7 @@ class S:
     def foo(q1: qubit, q2: qubit) -> None: ...
 
     @guppy(module)
-    def main(ss: array[S, 10] @owned) -> array[S, 10]:
+    def main(ss: array[S, 10] @ owned) -> array[S, 10]:
         # This will panic at runtime :(
         # To make this work, we would need to replace the qubits in the struct
         # with `qubit | None` and write back `None` after `q1` has been extracted...
@@ -181,12 +181,10 @@ def test_nested_subscripts(validate):
     def foo(q: qubit) -> None: ...
 
     @guppy.declare(module)
-    def bar(
-        q1: qubit, q2: qubit, q3: qubit, q4: qubit
-    ) -> None: ...
+    def bar(q1: qubit, q2: qubit, q3: qubit, q4: qubit) -> None: ...
 
     @guppy(module)
-    def main(qs: array[array[qubit, 13], 42] @owned) -> array[array[qubit, 13], 42]:
+    def main(qs: array[array[qubit, 13], 42] @ owned) -> array[array[qubit, 13], 42]:
         foo(qs[0][0])
         # The following should work *without* panicking at runtime! Accessing `qs[0][0]`
         # replaces one qubit with `None` but puts everything back into `qs` before
@@ -221,7 +219,7 @@ class A:
     def foo(q1: qubit) -> None: ...
 
     @guppy(module)
-    def main(a: A @owned, i: int, j: int, k: int) -> A:
+    def main(a: A @ owned, i: int, j: int, k: int) -> A:
         foo(a.xs[i].ys[j][k].c)
         return a
 
@@ -235,7 +233,7 @@ def test_generic_function(validate):
     n = guppy.nat_var("n", module=module)
 
     @guppy(module)
-    def foo(xs: array[T, n] @owned) -> array[T, n]:
+    def foo(xs: array[T, n] @ owned) -> array[T, n]:
         return xs
 
     @guppy(module)
@@ -265,7 +263,7 @@ def test_exec_array(validate, run_int_fn):
 
     @guppy(module)
     def main() -> int:
-        a = array(1,2,3)
+        a = array(1, 2, 3)
         return a[0] + a[1] + a[2]
 
     package = module.compile()
@@ -298,6 +296,7 @@ def test_mem_swap(validate):
     module = GuppyModule("test")
 
     module.load(qubit)
+
     @guppy(module)
     def foo(x: qubit, y: qubit) -> None:
         mem_swap(x, y)
@@ -310,3 +309,21 @@ def main() -> array[qubit, 2]:
 
     package = module.compile()
     validate(package)
+
+
+# https://github.com/CQCL/hugr/issues/1826
+def test_array_const(validate, run_int_fn):
+    module = GuppyModule("test")
+    module.load_all(quantum)
+
+    bools = [True, False]
+
+    @guppy(module)
+    def main() -> int:
+        bs = py(bools)
+        return int(bs[0])
+
+    package = module.compile()
+    validate(package)
+
+    run_int_fn(package, expected=1)