Reduce atol in two qubit isometry analytical decompositions to fix failing tests on CI (quantumlib#5837)

tanujkhattar · rht · commit a9074e67e00a · 2023-04-30T23:41:44.000-04:00
See https://github.com/quantumlib/Cirq/runs/8025774948?check_suite_focus=true
diff --git a/cirq-core/cirq/transformers/analytical_decompositions/single_to_two_qubit_isometry_test.py b/cirq-core/cirq/transformers/analytical_decompositions/single_to_two_qubit_isometry_test.py
@@ -61,6 +61,8 @@ def test_two_qubit_matrix_to_cz_isometry(
     decomposed_final_state_vector = sim.simulate(decomposed_circuit).final_state_vector
 
     assert (
-        cirq.allclose_up_to_global_phase(original_final_state_vector, decomposed_final_state_vector)
+        cirq.allclose_up_to_global_phase(
+            original_final_state_vector, decomposed_final_state_vector, atol=1e-6
+        )
         is is_valid
     )

Original file line number	Diff line number	Diff line change
`@@ -61,6 +61,8 @@ def test_two_qubit_matrix_to_cz_isometry(`
`61`	`61`	`decomposed_final_state_vector = sim.simulate(decomposed_circuit).final_state_vector`
`62`	`62`
`63`	`63`	`assert (`
`64`		`- cirq.allclose_up_to_global_phase(original_final_state_vector, decomposed_final_state_vector)`
	`64`	`+ cirq.allclose_up_to_global_phase(`
	`65`	`+ original_final_state_vector, decomposed_final_state_vector, atol=1e-6`
	`66`	`+ )`
`65`	`67`	`is is_valid`
`66`	`68`	`)`