diff --git a/test/mod_list_test.dart b/test/mod_list_test.dart
index ed39ef8..bf03379 100644
--- a/test/mod_list_test.dart
+++ b/test/mod_list_test.dart
@@ -81,6 +81,7 @@ void main() {
       final rimworldIndex = sortedMods.indexOf('ludeon.rimworld');
       expect(harmonyIndex, lessThan(rimworldIndex));
     });
+
     test('Prepatcher should load after Harmony and RimWorld', () {
       final prepatcherIndex = sortedMods.indexOf('prepatcher');
       final harmonyIndex = sortedMods.indexOf('harmony');
@@ -88,21 +89,25 @@ void main() {
       expect(prepatcherIndex, greaterThan(harmonyIndex));
       expect(prepatcherIndex, greaterThan(rimworldIndex));
     });
+
     test('RimWorld should load before Anomaly', () {
       final rimworldIndex = sortedMods.indexOf('ludeon.rimworld');
       final anomalyIndex = sortedMods.indexOf('ludeon.rimworld.anomaly');
       expect(rimworldIndex, lessThan(anomalyIndex));
     });
+
     test('Disabled dummy mod should not be loaded', () {
       final disabledIndex = sortedMods.indexOf('disabledDummy');
       expect(disabledIndex, isNegative);
     });
-    test("yuuuge mod should load before smol", () {
+
+    test('Larger mods should load before smaller ones', () {
       final smolIndex = sortedMods.indexOf('smol');
       final yuuugeIndex = sortedMods.indexOf('yuuuge');
       expect(yuuugeIndex, lessThan(smolIndex));
     });
-    test('Error generating load order with incompatible mods', () {
+
+    test('Incompatible mods should throw exception', () {
       dummyList.setEnabled('incompatible', true);
       expect(() => dummyList.generateLoadOrder(), throwsException);
     });
@@ -114,20 +119,242 @@ void main() {
   dummyList2.disableAll();
   dummyList2.setEnabled('prepatcher', true);
   final sortedMods2 = dummyList2.loadRequired();
+
   group('Test loadRequired', () {
-    test(
-      'Harmony should get enabled by loadRequired as a dependency of prepatcher',
-      () {
-        final harmonyIndex = sortedMods2.indexOf('harmony');
-        expect(harmonyIndex, isNot(-1));
-      },
-    );
-    test('No other mods should get enabled', () {
+    test('Dependencies should be automatically enabled', () {
+      final harmonyIndex = sortedMods2.indexOf('harmony');
+      expect(harmonyIndex, isNot(-1));
+    });
+
+    test('Only required mods should be enabled', () {
       for (final mod in dummyMods2.keys) {
         if (mod != 'prepatcher' && mod != 'harmony') {
           expect(sortedMods2.indexOf(mod), isNegative);
         }
       }
     });
+
+    test('Incompatible mods should throw exception', () {
+      dummyList2.setEnabled('incompatible', true);
+      expect(() => dummyList2.loadRequired(), throwsException);
+    });
+  });
+
+  group('Test cyclic dependencies', () {
+    test('Cyclic dependencies should throw exception', () {
+      final cyclicMods = generateDummyMods();
+      // Create a cyclic dependency: A -> B -> C -> A
+      cyclicMods['modA'] = cyclicMods['smol']!.copyWith(
+        name: 'Mod A',
+        id: 'modA',
+        dependencies: ['modB'],
+      );
+      cyclicMods['modB'] = cyclicMods['smol']!.copyWith(
+        name: 'Mod B',
+        id: 'modB',
+        dependencies: ['modC'],
+      );
+      cyclicMods['modC'] = cyclicMods['smol']!.copyWith(
+        name: 'Mod C',
+        id: 'modC',
+        dependencies: ['modA'],
+      );
+
+      final list = ModList();
+      list.mods = cyclicMods;
+      list.enableAll();
+
+      expect(() => list.generateLoadOrder(), throwsException);
+    });
+  });
+
+  group('Test soft constraints', () {
+    test('Load preferences should be respected when possible', () {
+      final softConstraintMods = generateDummyMods();
+      softConstraintMods['modA'] = softConstraintMods['smol']!.copyWith(
+        name: 'Mod A',
+        id: 'modA',
+        loadAfter: ['modB'],
+        loadBefore: ['modC'],
+      );
+      softConstraintMods['modB'] = softConstraintMods['smol']!.copyWith(
+        name: 'Mod B',
+        id: 'modB',
+      );
+      softConstraintMods['modC'] = softConstraintMods['smol']!.copyWith(
+        name: 'Mod C',
+        id: 'modC',
+      );
+
+      final list = ModList();
+      list.mods = softConstraintMods;
+      list.enableAll();
+      final order = list.generateLoadOrder();
+
+      final aIndex = order.indexOf('modA');
+      final bIndex = order.indexOf('modB');
+      final cIndex = order.indexOf('modC');
+
+      expect(aIndex, greaterThan(bIndex));
+      expect(aIndex, lessThan(cIndex));
+    });
+  });
+
+  group('Test conflict detection', () {
+    test('All conflicts should be correctly identified', () {
+      final incompatibleMods = generateDummyMods();
+      incompatibleMods['modA'] = incompatibleMods['smol']!.copyWith(
+        name: 'Mod A',
+        id: 'modA',
+        incompatibilities: ['modB', 'modC'],
+      );
+      incompatibleMods['modB'] = incompatibleMods['smol']!.copyWith(
+        name: 'Mod B',
+        id: 'modB',
+      );
+      incompatibleMods['modC'] = incompatibleMods['smol']!.copyWith(
+        name: 'Mod C',
+        id: 'modC',
+      );
+
+      final list = ModList();
+      list.mods = incompatibleMods;
+      list.enableAll();
+
+      final conflicts = list.checkIncompatibilities();
+      expect(conflicts.length, equals(2));
+
+      // Check if conflicts contain these pairs (order doesn't matter)
+      expect(
+        conflicts.any(
+          (c) =>
+              (c[0] == 'modA' && c[1] == 'modB') ||
+              (c[0] == 'modB' && c[1] == 'modA'),
+        ),
+        isTrue,
+      );
+      expect(
+        conflicts.any(
+          (c) =>
+              (c[0] == 'modA' && c[1] == 'modC') ||
+              (c[0] == 'modC' && c[1] == 'modA'),
+        ),
+        isTrue,
+      );
+    });
+  });
+
+  group('Test enable/disable functionality', () {
+    test('Enable and disable methods should work correctly', () {
+      final testMods = generateDummyMods();
+      final list = ModList();
+      list.mods = testMods;
+
+      list.enableAll();
+      for (final mod in list.mods.values) {
+        expect(mod.enabled, isTrue);
+      }
+
+      list.disableAll();
+      for (final mod in list.mods.values) {
+        expect(mod.enabled, isFalse);
+      }
+    });
+  });
+
+  group('Test base game and expansion handling', () {
+    test('Base game and expansions should be correctly ordered', () {
+      final gameMods = generateDummyMods();
+      final list = ModList();
+      list.mods = gameMods;
+      list.enableAll();
+      list.setEnabled('incompatible', false); // Avoid exception
+
+      final order = list.generateLoadOrder();
+
+      // Base game should load before any expansions
+      final baseGameIndex = order.indexOf('ludeon.rimworld');
+      final expansionIndex = order.indexOf('ludeon.rimworld.anomaly');
+      expect(baseGameIndex, lessThan(expansionIndex));
+
+      // Normal mods should come after base game (except harmony)
+      for (final modId in order) {
+        if (modId != 'ludeon.rimworld' &&
+            modId != 'harmony' &&
+            !modId.startsWith('ludeon.rimworld.')) {
+          expect(order.indexOf(modId), greaterThan(baseGameIndex));
+        }
+      }
+    });
+  });
+
+  group('Test complex dependency chains', () {
+    test('Complex dependency chains should resolve correctly', () {
+      final complexMods = generateDummyMods();
+      // Create a chain: A -> B -> C -> D
+      complexMods['modA'] = complexMods['smol']!.copyWith(
+        name: 'Mod A',
+        id: 'modA',
+        dependencies: ['modB'],
+      );
+      complexMods['modB'] = complexMods['smol']!.copyWith(
+        name: 'Mod B',
+        id: 'modB',
+        dependencies: ['modC'],
+      );
+      complexMods['modC'] = complexMods['smol']!.copyWith(
+        name: 'Mod C',
+        id: 'modC',
+        dependencies: ['modD'],
+      );
+      complexMods['modD'] = complexMods['smol']!.copyWith(
+        name: 'Mod D',
+        id: 'modD',
+      );
+
+      final list = ModList();
+      list.mods = complexMods;
+      list.disableAll();
+      list.setEnabled('modA', true);
+
+      final result = list.loadRequired();
+
+      // All mods in the chain should be enabled
+      expect(result.contains('modA'), isTrue);
+      expect(result.contains('modB'), isTrue);
+      expect(result.contains('modC'), isTrue);
+      expect(result.contains('modD'), isTrue);
+
+      // The order should be D -> C -> B -> A
+      expect(result.indexOf('modD'), lessThan(result.indexOf('modC')));
+      expect(result.indexOf('modC'), lessThan(result.indexOf('modB')));
+      expect(result.indexOf('modB'), lessThan(result.indexOf('modA')));
+    });
+  });
+
+  group('Test constraint prioritization', () {
+    test('Hard dependencies should override soft constraints', () {
+      final constraintMods = generateDummyMods();
+      // A depends on B but wants to load before it (impossible)
+      constraintMods['modA'] = constraintMods['smol']!.copyWith(
+        name: 'Mod A',
+        id: 'modA',
+        dependencies: ['modB'],
+        loadBefore: ['modB'],
+      );
+      constraintMods['modB'] = constraintMods['smol']!.copyWith(
+        name: 'Mod B',
+        id: 'modB',
+      );
+
+      final list = ModList();
+      list.mods = constraintMods;
+      list.enableAll();
+
+      final order = list.generateLoadOrder();
+
+      // Hard dependency must win
+      expect(order.indexOf('modB'), lessThan(order.indexOf('modA')));
+    });
   });
 }