币本位买币改为按最大可开张数×权利金×可配缓冲，不全额兑换USDT

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-20 14:33:48 +08:00
parent 4fb3be35ef
commit 87910ed71a
9 changed files with 309 additions and 63 deletions
@@ -82,6 +82,45 @@ class TestOptionsMarginMode(unittest.TestCase):
        self.assertTrue(r["ok"])
        self.assertEqual(r["sheets"], 97)

+    def test_spot_buy_buffer_normalize(self):
+        from lib.options.options_margin_mode_lib import normalize_coin_spot_buy_buffer
+
+        self.assertAlmostEqual(normalize_coin_spot_buy_buffer(1.10), 1.10)
+        self.assertAlmostEqual(normalize_coin_spot_buy_buffer(0.10), 1.10)
+        self.assertAlmostEqual(normalize_coin_spot_buy_buffer(1.25), 1.25)
+
+    def test_plan_coin_open_by_budget(self):
+        from lib.options.options_margin_mode_lib import plan_coin_open_by_budget
+
+        # ask 0.01, ct 0.1 → 单张权利金 0.001 ETH;×1.1=0.0011;×指数 2000 → 2.2 USDT/张
+        r = plan_coin_open_by_budget(
+            quote_per_unit=0.01,
+            ct_mult=0.1,
+            min_sz=1,
+            budget_usdt=10.0,
+            index_px=2000.0,
+            ask_sz=100,
+            spot_buy_buffer=1.10,
+        )
+        self.assertTrue(r["ok"], r.get("msg"))
+        self.assertEqual(r["sheets"], 4)  # floor(10/2.2)=4
+        self.assertAlmostEqual(r["buy_usdt"], 4 * 0.01 * 0.1 * 1.10 * 2000, places=4)
+        self.assertLess(r["buy_usdt"], 10.0)
+
+        one = plan_coin_open_by_budget(
+            quote_per_unit=0.01,
+            ct_mult=0.1,
+            min_sz=1,
+            budget_usdt=10.0,
+            index_px=2000.0,
+            ask_sz=100,
+            spot_buy_buffer=1.10,
+            target_sheets=1,
+        )
+        self.assertTrue(one["ok"], one.get("msg"))
+        self.assertEqual(one["sheets"], 1)
+        self.assertAlmostEqual(one["buy_usdt"], 0.01 * 0.1 * 1.10 * 2000, places=4)
+

 if __name__ == "__main__":
    unittest.main()