diff --git a/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs b/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs
new file mode 100644
index 00000000..1a3bc7b6
--- /dev/null
+++ b/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs
@@ -0,0 +1,158 @@
+using System.Collections.Generic;
+using NUnit.Framework;
+using RevenueCat.SimpleJSON;
+using UnityEngine;
+
+namespace RevenueCat.Tests
+{
+    public class WrapperPassthroughTests
+    {
+        private GameObject _gameObject;
+        private Purchases _purchases;
+        private PurchasesWrapperSpy _wrapper;
+
+        [SetUp]
+        public void SetUp()
+        {
+            _gameObject = new GameObject("RevenueCatTests");
+            _purchases = _gameObject.AddComponent<Purchases>();
+            _wrapper = new PurchasesWrapperSpy();
+            _purchases.SetWrapper(_wrapper);
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            Object.DestroyImmediate(_gameObject);
+        }
+
+        [Test]
+        public void SetAttributesSerializesStringsAndNulls()
+        {
+            _purchases.SetAttributes(new Dictionary<string, string>
+            {
+                ["plan"] = "premium",
+                ["nickname"] = null
+            });
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.SetAttributes), 1);
+            var attributes = JSONNode.Parse((string)invocation.Arguments[0]);
+            Assert.That(attributes["plan"].Value, Is.EqualTo("premium"));
+            Assert.That(attributes["nickname"].IsNull, Is.True);
+        }
+
+        [Test]
+        public void ShowInAppMessagesForwardsMessageTypes()
+        {
+            var messageTypes = new[] { Purchases.InAppMessageType.BillingIssue };
+
+            _purchases.ShowInAppMessages(messageTypes);
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.ShowInAppMessages), 1);
+            Assert.That(invocation.Arguments[0], Is.SameAs(messageTypes));
+        }
+
+        [Test]
+        public void ShowInAppMessagesForwardsNullWhenNotSpecified()
+        {
+            _purchases.ShowInAppMessages();
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.ShowInAppMessages), 1);
+            Assert.That(invocation.Arguments[0], Is.Null);
+        }
+
+        [Test]
+        public void OverridePreferredUILocaleForwardsLocale()
+        {
+            _purchases.OverridePreferredUILocale("de_DE");
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.OverridePreferredUILocale), 1);
+            Assert.That(invocation.Arguments[0], Is.EqualTo("de_DE"));
+        }
+
+        [Test]
+        public void InvalidateCustomerInfoCacheCallsWrapper()
+        {
+            _purchases.InvalidateCustomerInfoCache();
+
+            AssertLastInvocation(nameof(IPurchasesWrapper.InvalidateCustomerInfoCache), 0);
+        }
+
+        [Test]
+        public void InvalidateVirtualCurrenciesCacheCallsWrapper()
+        {
+            _purchases.InvalidateVirtualCurrenciesCache();
+
+            AssertLastInvocation(nameof(IPurchasesWrapper.InvalidateVirtualCurrenciesCache), 0);
+        }
+
+        [Test]
+        public void SetAppsFlyerConversionDataSerializesNestedValues()
+        {
+            _purchases.SetAppsFlyerConversionData(new Dictionary<string, object>
+            {
+                ["af_status"] = "Organic",
+                ["media_source"] = null,
+                ["click_count"] = 3,
+                ["nested"] = new Dictionary<string, object> { ["key"] = "value" },
+                ["list"] = new List<object> { "a", "b" }
+            });
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.SetAppsFlyerConversionData), 1);
+            var conversionData = JSONNode.Parse((string)invocation.Arguments[0]);
+            Assert.That(conversionData["af_status"].Value, Is.EqualTo("Organic"));
+            Assert.That(conversionData["media_source"].IsNull, Is.True);
+            Assert.That(conversionData["click_count"].AsInt, Is.EqualTo(3));
+            Assert.That(conversionData["nested"]["key"].Value, Is.EqualTo("value"));
+            Assert.That(conversionData["list"][0].Value, Is.EqualTo("a"));
+            Assert.That(conversionData["list"][1].Value, Is.EqualTo("b"));
+        }
+
+        [Test]
+        public void SyncAmazonPurchaseForwardsArgumentsInOrder()
+        {
+            _purchases.SyncAmazonPurchase("product_1", "receipt_1", "amazon_user_1", "USD", 9.99);
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.SyncAmazonPurchase), 5);
+            Assert.That(invocation.Arguments[0], Is.EqualTo("product_1"));
+            Assert.That(invocation.Arguments[1], Is.EqualTo("receipt_1"));
+            Assert.That(invocation.Arguments[2], Is.EqualTo("amazon_user_1"));
+            Assert.That(invocation.Arguments[3], Is.EqualTo("USD"));
+            Assert.That(invocation.Arguments[4], Is.EqualTo(9.99));
+        }
+
+        [Test]
+        public void CollectDeviceIdentifiersCallsWrapper()
+        {
+            _purchases.CollectDeviceIdentifiers();
+
+            AssertLastInvocation(nameof(IPurchasesWrapper.CollectDeviceIdentifiers), 0);
+        }
+
+        [Test]
+        public void SetSimulatesAskToBuyInSandboxForwardsFlag()
+        {
+            _purchases.SetSimulatesAskToBuyInSandbox(true);
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.SetSimulatesAskToBuyInSandbox), 1);
+            Assert.That(invocation.Arguments[0], Is.True);
+        }
+
+        [Test]
+        public void SetAdjustIdForwardsValue()
+        {
+            _purchases.SetAdjustID("adjust_id_1");
+
+            var invocation = AssertLastInvocation(nameof(IPurchasesWrapper.SetAdjustID), 1);
+            Assert.That(invocation.Arguments[0], Is.EqualTo("adjust_id_1"));
+        }
+
+        private PurchasesWrapperSpy.Invocation AssertLastInvocation(string method, int argumentCount)
+        {
+            Assert.That(_wrapper.Invocations, Has.Count.EqualTo(1));
+            Assert.That(_wrapper.LastInvocation.Method, Is.EqualTo(method));
+            Assert.That(_wrapper.LastInvocation.Arguments, Has.Length.EqualTo(argumentCount));
+            return _wrapper.LastInvocation;
+        }
+    }
+}
diff --git a/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs.meta b/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs.meta
new file mode 100644
index 00000000..37eb4dc1
--- /dev/null
+++ b/IntegrationTests/Assets/Tests/EditMode/WrapperPassthroughTests.cs.meta
@@ -0,0 +1,11 @@
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