1 files changed, 70 insertions, 0 deletions

diff --git a/test/sca/test_epa.py b/test/sca/test_epa.py
new file mode 100644
index 0000000..0362e4e
--- /dev/null
+++ b/test/sca/test_epa.py
@@ -0,0 +1,70 @@
+from functools import partial
+
+from pyecsca.ec.mult import LTRMultiplier, CombMultiplier
+from pyecsca.sca.re.epa import errors_out
+
+
+def test_errors_out(secp128r1):
+    res_empty_checks = errors_out(
+        scalar=15,
+        params=secp128r1,
+        mult_class=LTRMultiplier,
+        mult_factory=LTRMultiplier,
+        check_funcs={},
+        check_condition="all",
+        precomp_to_affine=True,
+    )
+    assert not res_empty_checks
+
+    def add_check(k, l):  # noqa
+        return k == 6
+
+    res_check_k_add = errors_out(
+        scalar=15,
+        params=secp128r1,
+        mult_class=LTRMultiplier,
+        mult_factory=LTRMultiplier,
+        check_funcs={"add": add_check},
+        check_condition="all",
+        precomp_to_affine=True,
+    )
+    assert res_check_k_add
+
+    def affine_check(k):
+        return k == 15
+
+    res_check_k_affine = errors_out(
+        scalar=15,
+        params=secp128r1,
+        mult_class=LTRMultiplier,
+        mult_factory=LTRMultiplier,
+        check_funcs={"affine": affine_check},
+        check_condition="all",
+        precomp_to_affine=True,
+    )
+    assert res_check_k_affine
+
+    def affine_check_comb(k):
+        return k == 2**64
+
+    res_check_k_affine_precomp = errors_out(
+        scalar=15,
+        params=secp128r1,
+        mult_class=CombMultiplier,
+        mult_factory=partial(CombMultiplier, width=2),
+        check_funcs={"affine": affine_check_comb},
+        check_condition="all",
+        precomp_to_affine=True,
+    )
+    assert res_check_k_affine_precomp
+
+    res_check_k_no_affine_precomp = errors_out(
+        scalar=15,
+        params=secp128r1,
+        mult_class=CombMultiplier,
+        mult_factory=partial(CombMultiplier, width=2),
+        check_funcs={"affine": affine_check_comb},
+        check_condition="all",
+        precomp_to_affine=False,
+    )
+    assert not res_check_k_no_affine_precomp