Split apart MapToCurveSimpleSWU and GroupHash test vectors

The test vector generators in this repository are meant to output data
that can be copy-pasted or piped to a file. Generating multiple sets of
test vectors from a single file interferes with this.

orchard_group_hash.py

@@ -136,46 +136,18 @@ def group_hash(d, m):
 
 
 def main():
-    map_to_curve_test_vectors = [
-        (Fp(0), orchard_iso_pallas.Point(Fp(19938918781445865934736160264407396416050199005817793816893455093350997047296),
-                                         Fp(1448774895934493446148762800986014913165975534940595774801697325542407056356))),
-        (Fp(1), orchard_iso_pallas.Point(Fp(5290181550357368025040301950220623271393946308300025648720253222947454165280),
-                                         Fp(24520995241805476578231005891941079870703368870355132644748659103632565232759))),
-        (Fp(0x123456789abcdef123456789abcdef123456789abcdef123456789abcdef0123),
-                orchard_iso_pallas.Point(Fp(16711718778908753690082328243251803703269853000652055785581237369882690082595),
-                                         Fp(1764705856161931038824461929646873031992914829456409784642560948827969833589))),
-    ]
-
-    for (u, point) in map_to_curve_test_vectors:
-        P = map_to_curve_simple_swu(u)
-        assert P == point
-
-    print("map_to_curve_simple_swu (Pallas):")
-    render_tv(
-        render_args(),
-        'orchard_group_hash',
-        (
-            ('u', '[u8; 32]'),
-            ('point', '[u8; 32]'),
-        ),
-        [{
-            'u': bytes(u),
-            'point': bytes(point),
-        } for (u, point) in map_to_curve_test_vectors],
-    )
-    print("")
-
-    group_hash_test_vectors = [
+    fixed_test_vectors = [
         # This is the Pallas test vector from the Sage and Rust code (in affine coordinates).
         (b"z.cash:test", b"Trans rights now!", Point(Fp(10899331951394555178876036573383466686793225972744812919361819919497009261523),
                                                      Fp(851679174277466283220362715537906858808436854303373129825287392516025427980))),
     ]
 
-    for (domain, msg, point) in group_hash_test_vectors:
+    for (domain, msg, point) in fixed_test_vectors:
         gh = group_hash(domain, msg)
         assert gh == point
 
-    print("group_hash (Pallas):")
+    test_vectors = [(domain, msg) for (domain, msg, _) in fixed_test_vectors]
+
     render_tv(
         render_args(),
         'orchard_group_hash',
@@ -187,10 +159,9 @@ def main():
         [{
             'domain': domain,
             'msg': msg,
-            'point': bytes(point),
-        } for (domain, msg, point) in group_hash_test_vectors],
+            'point': bytes(group_hash(domain, msg)),
+        } for (domain, msg) in test_vectors],
     )
-    print("")
 
 
 if __name__ == "__main__":

orchard_map_to_curve.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+from orchard_group_hash import map_to_curve_simple_swu
+from orchard_iso_pallas import Point as IsoPoint
+from orchard_pallas import Fp
+from tv_output import render_args, render_tv
+
+
+def main():
+    fixed_test_vectors = [
+        (Fp(0), IsoPoint(Fp(19938918781445865934736160264407396416050199005817793816893455093350997047296),
+                         Fp(1448774895934493446148762800986014913165975534940595774801697325542407056356))),
+        (Fp(1), IsoPoint(Fp(5290181550357368025040301950220623271393946308300025648720253222947454165280),
+                         Fp(24520995241805476578231005891941079870703368870355132644748659103632565232759))),
+        (Fp(0x123456789abcdef123456789abcdef123456789abcdef123456789abcdef0123),
+                IsoPoint(Fp(16711718778908753690082328243251803703269853000652055785581237369882690082595),
+                         Fp(1764705856161931038824461929646873031992914829456409784642560948827969833589))),
+    ]
+
+    for (u, point) in fixed_test_vectors:
+        P = map_to_curve_simple_swu(u)
+        assert P == point
+
+    test_vectors = [u for (u, _) in fixed_test_vectors]
+
+    render_tv(
+        render_args(),
+        'orchard_map_to_curve',
+        (
+            ('u', '[u8; 32]'),
+            ('point', '[u8; 32]'),
+        ),
+        [{
+            'u': bytes(u),
+            'point': bytes(map_to_curve_simple_swu(u)),
+        } for u in test_vectors],
+    )
+
+
+if __name__ == "__main__":
+    main()