Add base test for incentive

src/DssSpell.t.base.sol

@@ -685,6 +685,10 @@ contract DssSpellTestBase is Config, DssTest {
 
         // wait
         assertEq(vow.wait(), values.vow_wait, "TestError/vow-wait");
+
+        // Ensure there is enough time for the governance to unwind SBE LP tokens instead of starting a Flop auction
+        assertGe(vow.wait(), pause.delay() * 2, "TestError/vow-wait-too-short");
+
         {
         // dump values in WAD
         uint256 normalizedDump = values.vow_dump * WAD;
@@ -961,6 +965,17 @@ contract DssSpellTestBase is Config, DssTest {
                     address engine = LockstakeClipperLike(address(clip)).engine();
                     assertNotEq(engine, address(0), _concat("TestError/clip-engine-is-not-set-", ilk));
                 }
+                {
+                    // Ensure liquidation penalty is always bigger than combined keeper incentives
+                    (,,, uint256 line, uint256 dust) = vat.ilks(ilk);
+                    if (line != 0 && clip.stopped() == 0) {
+                        (, uint256 chop,,) = dog.ilks(ilk);
+                        uint256 tab = dust * chop / WAD;
+                        uint256 penaltyAmount = tab - dust;
+                        uint256 incentiveAmount = uint256(clip.tip()) + (tab * uint256(clip.chip()) / WAD);
+                        assertGe(penaltyAmount, incentiveAmount, _concat("TestError/too-low-dog-chop-", ilk));
+                    }
+                }
             }
             if (reg.class(ilk) < 3) {
                 {