feat(test): Implement `arrayContaining` (#5572)

* feat(test): implement `arrayContaining`

* feat: early return when expectedArray is empty

* feat: add test for toEqual

* chore: use `JSC::isArray`

* chore: use getIndex for performance

* fix: use deepEqual

---------

Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

12 files changed, 432 insertions, 3 deletions

diff --git a/src/bun.js/bindings/ZigGeneratedClasses+DOMClientIsoSubspaces.h b/src/bun.js/bindings/ZigGeneratedClasses+DOMClientIsoSubspaces.h
index a364c0a48..cef5c512a 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses+DOMClientIsoSubspaces.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses+DOMClientIsoSubspaces.h
@@ -16,6 +16,7 @@ std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForEndTag;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpect;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectConstructor;std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectAny;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectAnything;
+std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectArrayContaining;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectStringContaining;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForExpectStringMatching;
 std::unique_ptr<GCClient::IsoSubspace> m_clientSubspaceForFFI;
diff --git a/src/bun.js/bindings/ZigGeneratedClasses+DOMIsoSubspaces.h b/src/bun.js/bindings/ZigGeneratedClasses+DOMIsoSubspaces.h
index e98ea16c3..d06451eda 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses+DOMIsoSubspaces.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses+DOMIsoSubspaces.h
@@ -16,6 +16,7 @@ std::unique_ptr<IsoSubspace> m_subspaceForEndTag;
 std::unique_ptr<IsoSubspace> m_subspaceForExpect;
 std::unique_ptr<IsoSubspace> m_subspaceForExpectConstructor;std::unique_ptr<IsoSubspace> m_subspaceForExpectAny;
 std::unique_ptr<IsoSubspace> m_subspaceForExpectAnything;
+std::unique_ptr<IsoSubspace> m_subspaceForExpectArrayContaining;
 std::unique_ptr<IsoSubspace> m_subspaceForExpectStringContaining;
 std::unique_ptr<IsoSubspace> m_subspaceForExpectStringMatching;
 std::unique_ptr<IsoSubspace> m_subspaceForFFI;
diff --git a/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureHeader.h b/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureHeader.h
index 386e1ea80..381378262 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureHeader.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureHeader.h
@@ -70,6 +70,10 @@ JSC::Structure* JSExpectAnythingStructure() { return m_JSExpectAnything.getIniti
   JSC::JSObject* JSExpectAnythingConstructor() { return m_JSExpectAnything.constructorInitializedOnMainThread(this); }
   JSC::JSValue JSExpectAnythingPrototype() { return m_JSExpectAnything.prototypeInitializedOnMainThread(this); }
   JSC::LazyClassStructure m_JSExpectAnything;
+JSC::Structure* JSExpectArrayContainingStructure() { return m_JSExpectArrayContaining.getInitializedOnMainThread(this); }
+  JSC::JSObject* JSExpectArrayContainingConstructor() { return m_JSExpectArrayContaining.constructorInitializedOnMainThread(this); }
+  JSC::JSValue JSExpectArrayContainingPrototype() { return m_JSExpectArrayContaining.prototypeInitializedOnMainThread(this); }
+  JSC::LazyClassStructure m_JSExpectArrayContaining;
 JSC::Structure* JSExpectStringContainingStructure() { return m_JSExpectStringContaining.getInitializedOnMainThread(this); }
   JSC::JSObject* JSExpectStringContainingConstructor() { return m_JSExpectStringContaining.constructorInitializedOnMainThread(this); }
   JSC::JSValue JSExpectStringContainingPrototype() { return m_JSExpectStringContaining.prototypeInitializedOnMainThread(this); }
diff --git a/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureImpl.h b/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureImpl.h
index b51752180..84d3df7a0 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureImpl.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses+lazyStructureImpl.h
@@ -1,4 +1,4 @@
-void GlobalObject::initGeneratedLazyClasses() {
+ALWAYS_INLINE void GlobalObject::initGeneratedLazyClasses() {
     m_JSAttributeIterator.initLater(
               [](LazyClassStructure::Initializer& init) {
                  init.setPrototype(WebCore::JSAttributeIterator::createPrototype(init.vm, reinterpret_cast<Zig::GlobalObject*>(init.global)));
@@ -107,6 +107,12 @@ void GlobalObject::initGeneratedLazyClasses() {
                  init.setStructure(WebCore::JSExpectAnything::createStructure(init.vm, init.global, init.prototype));
                  
               });
+    m_JSExpectArrayContaining.initLater(
+              [](LazyClassStructure::Initializer& init) {
+                 init.setPrototype(WebCore::JSExpectArrayContaining::createPrototype(init.vm, reinterpret_cast<Zig::GlobalObject*>(init.global)));
+                 init.setStructure(WebCore::JSExpectArrayContaining::createStructure(init.vm, init.global, init.prototype));
+                 
+              });
     m_JSExpectStringContaining.initLater(
               [](LazyClassStructure::Initializer& init) {
                  init.setPrototype(WebCore::JSExpectStringContaining::createPrototype(init.vm, reinterpret_cast<Zig::GlobalObject*>(init.global)));
@@ -321,6 +327,7 @@ void GlobalObject::visitGeneratedLazyClasses(GlobalObject *thisObject, Visitor&
       thisObject->m_JSExpect.visit(visitor);
       thisObject->m_JSExpectAny.visit(visitor);
       thisObject->m_JSExpectAnything.visit(visitor);
+      thisObject->m_JSExpectArrayContaining.visit(visitor);
       thisObject->m_JSExpectStringContaining.visit(visitor);
       thisObject->m_JSExpectStringMatching.visit(visitor);
       thisObject->m_JSFFI.visit(visitor);
diff --git a/src/bun.js/bindings/ZigGeneratedClasses.cpp b/src/bun.js/bindings/ZigGeneratedClasses.cpp
index ec2add296..b84c1cd16 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses.cpp
+++ b/src/bun.js/bindings/ZigGeneratedClasses.cpp
@@ -9712,6 +9712,174 @@ extern "C" EncodedJSValue ExpectAnything__create(Zig::GlobalObject* globalObject
 
     return JSValue::encode(instance);
 }
+class JSExpectArrayContainingPrototype final : public JSC::JSNonFinalObject {
+public:
+    using Base = JSC::JSNonFinalObject;
+
+    static JSExpectArrayContainingPrototype* create(JSC::VM& vm, JSGlobalObject* globalObject, JSC::Structure* structure)
+    {
+        JSExpectArrayContainingPrototype* ptr = new (NotNull, JSC::allocateCell<JSExpectArrayContainingPrototype>(vm)) JSExpectArrayContainingPrototype(vm, globalObject, structure);
+        ptr->finishCreation(vm, globalObject);
+        return ptr;
+    }
+
+    DECLARE_INFO;
+    template<typename CellType, JSC::SubspaceAccess>
+    static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
+    {
+        return &vm.plainObjectSpace();
+    }
+    static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
+    {
+        return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
+    }
+
+private:
+    JSExpectArrayContainingPrototype(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
+        : Base(vm, structure)
+    {
+    }
+
+    void finishCreation(JSC::VM&, JSC::JSGlobalObject*);
+};
+
+extern "C" void ExpectArrayContainingClass__finalize(void*);
+extern "C" JSC_DECLARE_HOST_FUNCTION(ExpectArrayContainingClass__call);
+
+STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(JSExpectArrayContainingPrototype, JSExpectArrayContainingPrototype::Base);
+
+static const HashTableValue JSExpectArrayContainingPrototypeTableValues[] = {};
+
+const ClassInfo JSExpectArrayContainingPrototype::s_info = { "ExpectArrayContaining"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSExpectArrayContainingPrototype) };
+
+extern "C" void ExpectArrayContainingPrototype__arrayValueSetCachedValue(JSC::EncodedJSValue thisValue, JSC::JSGlobalObject* globalObject, JSC::EncodedJSValue value)
+{
+    auto& vm = globalObject->vm();
+    auto* thisObject = jsCast<JSExpectArrayContaining*>(JSValue::decode(thisValue));
+    thisObject->m_arrayValue.set(vm, thisObject, JSValue::decode(value));
+}
+
+extern "C" EncodedJSValue ExpectArrayContainingPrototype__arrayValueGetCachedValue(JSC::EncodedJSValue thisValue)
+{
+    auto* thisObject = jsCast<JSExpectArrayContaining*>(JSValue::decode(thisValue));
+    return JSValue::encode(thisObject->m_arrayValue.get());
+}
+
+void JSExpectArrayContainingPrototype::finishCreation(JSC::VM& vm, JSC::JSGlobalObject* globalObject)
+{
+    Base::finishCreation(vm);
+
+    JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
+}
+
+JSExpectArrayContaining::~JSExpectArrayContaining()
+{
+    if (m_ctx) {
+        ExpectArrayContainingClass__finalize(m_ctx);
+    }
+}
+void JSExpectArrayContaining::destroy(JSCell* cell)
+{
+    static_cast<JSExpectArrayContaining*>(cell)->JSExpectArrayContaining::~JSExpectArrayContaining();
+}
+
+const ClassInfo JSExpectArrayContaining::s_info = { "ExpectArrayContaining"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSExpectArrayContaining) };
+
+void JSExpectArrayContaining::finishCreation(VM& vm)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(info()));
+}
+
+JSExpectArrayContaining* JSExpectArrayContaining::create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* ctx)
+{
+    JSExpectArrayContaining* ptr = new (NotNull, JSC::allocateCell<JSExpectArrayContaining>(vm)) JSExpectArrayContaining(vm, structure, ctx);
+    ptr->finishCreation(vm);
+    return ptr;
+}
+
+extern "C" void* ExpectArrayContaining__fromJS(JSC::EncodedJSValue value)
+{
+    JSC::JSValue decodedValue = JSC::JSValue::decode(value);
+    if (decodedValue.isEmpty() || !decodedValue.isCell())
+        return nullptr;
+
+    JSC::JSCell* cell = decodedValue.asCell();
+    JSExpectArrayContaining* object = JSC::jsDynamicCast<JSExpectArrayContaining*>(cell);
+
+    if (!object)
+        return nullptr;
+
+    return object->wrapped();
+}
+
+extern "C" bool ExpectArrayContaining__dangerouslySetPtr(JSC::EncodedJSValue value, void* ptr)
+{
+    JSExpectArrayContaining* object = JSC::jsDynamicCast<JSExpectArrayContaining*>(JSValue::decode(value));
+    if (!object)
+        return false;
+
+    object->m_ctx = ptr;
+    return true;
+}
+
+extern "C" const size_t ExpectArrayContaining__ptrOffset = JSExpectArrayContaining::offsetOfWrapped();
+
+void JSExpectArrayContaining::analyzeHeap(JSCell* cell, HeapAnalyzer& analyzer)
+{
+    auto* thisObject = jsCast<JSExpectArrayContaining*>(cell);
+    if (void* wrapped = thisObject->wrapped()) {
+        // if (thisObject->scriptExecutionContext())
+        //     analyzer.setLabelForCell(cell, "url " + thisObject->scriptExecutionContext()->url().string());
+    }
+    Base::analyzeHeap(cell, analyzer);
+}
+
+JSObject* JSExpectArrayContaining::createPrototype(VM& vm, JSDOMGlobalObject* globalObject)
+{
+    return JSExpectArrayContainingPrototype::create(vm, globalObject, JSExpectArrayContainingPrototype::createStructure(vm, globalObject, globalObject->objectPrototype()));
+}
+
+extern "C" EncodedJSValue ExpectArrayContaining__create(Zig::GlobalObject* globalObject, void* ptr)
+{
+    auto& vm = globalObject->vm();
+    JSC::Structure* structure = globalObject->JSExpectArrayContainingStructure();
+    JSExpectArrayContaining* instance = JSExpectArrayContaining::create(vm, globalObject, structure, ptr);
+
+    return JSValue::encode(instance);
+}
+
+template<typename Visitor>
+void JSExpectArrayContaining::visitChildrenImpl(JSCell* cell, Visitor& visitor)
+{
+    JSExpectArrayContaining* thisObject = jsCast<JSExpectArrayContaining*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
+    Base::visitChildren(thisObject, visitor);
+
+    thisObject->visitAdditionalChildren<Visitor>(visitor);
+}
+
+DEFINE_VISIT_CHILDREN(JSExpectArrayContaining);
+
+template<typename Visitor>
+void JSExpectArrayContaining::visitAdditionalChildren(Visitor& visitor)
+{
+    JSExpectArrayContaining* thisObject = this;
+    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
+    visitor.append(thisObject->m_arrayValue);
+}
+
+DEFINE_VISIT_ADDITIONAL_CHILDREN(JSExpectArrayContaining);
+
+template<typename Visitor>
+void JSExpectArrayContaining::visitOutputConstraintsImpl(JSCell* cell, Visitor& visitor)
+{
+    JSExpectArrayContaining* thisObject = jsCast<JSExpectArrayContaining*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
+    thisObject->visitAdditionalChildren<Visitor>(visitor);
+}
+
+DEFINE_VISIT_OUTPUT_CONSTRAINTS(JSExpectArrayContaining);
 class JSExpectStringContainingPrototype final : public JSC::JSNonFinalObject {
 public:
     using Base = JSC::JSNonFinalObject;
diff --git a/src/bun.js/bindings/ZigGeneratedClasses.h b/src/bun.js/bindings/ZigGeneratedClasses.h
index 142a96746..33aa58487 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses.h
@@ -1004,6 +1004,62 @@ public:
     void finishCreation(JSC::VM&);
 };
 
+class JSExpectArrayContaining final : public JSC::JSDestructibleObject {
+public:
+    using Base = JSC::JSDestructibleObject;
+    static JSExpectArrayContaining* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* ctx);
+
+    DECLARE_EXPORT_INFO;
+    template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
+    {
+        if constexpr (mode == JSC::SubspaceAccess::Concurrently)
+            return nullptr;
+        return WebCore::subspaceForImpl<JSExpectArrayContaining, WebCore::UseCustomHeapCellType::No>(
+            vm,
+            [](auto& spaces) { return spaces.m_clientSubspaceForExpectArrayContaining.get(); },
+            [](auto& spaces, auto&& space) { spaces.m_clientSubspaceForExpectArrayContaining = std::forward<decltype(space)>(space); },
+            [](auto& spaces) { return spaces.m_subspaceForExpectArrayContaining.get(); },
+            [](auto& spaces, auto&& space) { spaces.m_subspaceForExpectArrayContaining = std::forward<decltype(space)>(space); });
+    }
+
+    static void destroy(JSC::JSCell*);
+    static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
+    {
+        return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(static_cast<JSC::JSType>(0b11101110), StructureFlags), info());
+    }
+
+    static JSObject* createPrototype(VM& vm, JSDOMGlobalObject* globalObject);
+    ;
+
+    ~JSExpectArrayContaining();
+
+    void* wrapped() const { return m_ctx; }
+
+    void detach()
+    {
+        m_ctx = nullptr;
+    }
+
+    static void analyzeHeap(JSCell*, JSC::HeapAnalyzer&);
+    static ptrdiff_t offsetOfWrapped() { return OBJECT_OFFSETOF(JSExpectArrayContaining, m_ctx); }
+
+    void* m_ctx { nullptr };
+
+    JSExpectArrayContaining(JSC::VM& vm, JSC::Structure* structure, void* sinkPtr)
+        : Base(vm, structure)
+    {
+        m_ctx = sinkPtr;
+    }
+
+    void finishCreation(JSC::VM&);
+
+    DECLARE_VISIT_CHILDREN;
+    template<typename Visitor> void visitAdditionalChildren(Visitor&);
+    DECLARE_VISIT_OUTPUT_CONSTRAINTS;
+
+    mutable JSC::WriteBarrier<JSC::Unknown> m_arrayValue;
+};
+
 class JSExpectStringContaining final : public JSC::JSDestructibleObject {
 public:
     using Base = JSC::JSDestructibleObject;
diff --git a/src/bun.js/bindings/bindings.cpp b/src/bun.js/bindings/bindings.cpp
index 173a454a1..47ef36aea 100644
--- a/src/bun.js/bindings/bindings.cpp
+++ b/src/bun.js/bindings/bindings.cpp
@@ -230,6 +230,47 @@ AsymmetricMatcherResult matchAsymmetricMatcher(JSGlobalObject* globalObject, JSC
         }
 
         return AsymmetricMatcherResult::FAIL;
+    } else if (auto* expectArrayContaining = jsDynamicCast<JSExpectArrayContaining*>(matcherPropCell)) {
+        JSValue expectedArrayValue = expectArrayContaining->m_arrayValue.get();
+
+        if (JSC::isArray(globalObject, otherProp)) {
+            if (JSC::isArray(globalObject, expectedArrayValue)) {
+                JSArray* expectedArray = jsDynamicCast<JSArray*>(expectedArrayValue);
+                JSArray* otherArray = jsDynamicCast<JSArray*>(otherProp);
+
+                unsigned expectedLength = expectedArray->length();
+                unsigned otherLength = otherArray->length();
+
+                // A empty array is all array's subset
+                if (expectedLength == 0) {
+                    return AsymmetricMatcherResult::PASS;
+                }
+
+                // O(m*n) but works for now
+                for (unsigned m = 0; m < expectedLength; m++) {
+                    JSValue expectedValue = expectedArray->getIndex(globalObject, m);
+                    bool found = false;
+
+                    for (unsigned n = 0; n < otherLength; n++) {
+                        JSValue otherValue = otherArray->getIndex(globalObject, n);
+                        ThrowScope scope = DECLARE_THROW_SCOPE(globalObject->vm());
+                        Vector<std::pair<JSValue, JSValue>, 16> stack;
+                        if (Bun__deepEquals<false, true>(globalObject, expectedValue, otherValue, stack, &scope, true)) {
+                            found = true;
+                            break;
+                        }
+                    }
+
+                    if (!found) {
+                        return AsymmetricMatcherResult::FAIL;
+                    }
+                }
+
+                return AsymmetricMatcherResult::PASS;
+            }
+        }
+
+        return AsymmetricMatcherResult::FAIL;
     }
 
     return AsymmetricMatcherResult::NOT_MATCHER;
@@ -4702,4 +4743,4 @@ CPP_DECL void JSC__VM__setControlFlowProfiler(JSC__VM* vm, bool isEnabled)
     } else {
         vm->disableControlFlowProfiler();
     }
-}
\ No newline at end of file
+}
diff --git a/src/bun.js/bindings/generated_classes.zig b/src/bun.js/bindings/generated_classes.zig
index 329506718..581d4a5f3 100644
--- a/src/bun.js/bindings/generated_classes.zig
+++ b/src/bun.js/bindings/generated_classes.zig
@@ -2507,6 +2507,87 @@ pub const JSExpectAnything = struct {
         }
     }
 };
+pub const JSExpectArrayContaining = struct {
+    const ExpectArrayContaining = Classes.ExpectArrayContaining;
+    const GetterType = fn (*ExpectArrayContaining, *JSC.JSGlobalObject) callconv(.C) JSC.JSValue;
+    const GetterTypeWithThisValue = fn (*ExpectArrayContaining, JSC.JSValue, *JSC.JSGlobalObject) callconv(.C) JSC.JSValue;
+    const SetterType = fn (*ExpectArrayContaining, *JSC.JSGlobalObject, JSC.JSValue) callconv(.C) bool;
+    const SetterTypeWithThisValue = fn (*ExpectArrayContaining, JSC.JSValue, *JSC.JSGlobalObject, JSC.JSValue) callconv(.C) bool;
+    const CallbackType = fn (*ExpectArrayContaining, *JSC.JSGlobalObject, *JSC.CallFrame) callconv(.C) JSC.JSValue;
+
+    /// Return the pointer to the wrapped object.
+    /// If the object does not match the type, return null.
+    pub fn fromJS(value: JSC.JSValue) ?*ExpectArrayContaining {
+        JSC.markBinding(@src());
+        return ExpectArrayContaining__fromJS(value);
+    }
+
+    extern fn ExpectArrayContainingPrototype__arrayValueSetCachedValue(JSC.JSValue, *JSC.JSGlobalObject, JSC.JSValue) void;
+
+    extern fn ExpectArrayContainingPrototype__arrayValueGetCachedValue(JSC.JSValue) JSC.JSValue;
+
+    /// `ExpectArrayContaining.arrayValue` setter
+    /// This value will be visited by the garbage collector.
+    pub fn arrayValueSetCached(thisValue: JSC.JSValue, globalObject: *JSC.JSGlobalObject, value: JSC.JSValue) void {
+        JSC.markBinding(@src());
+        ExpectArrayContainingPrototype__arrayValueSetCachedValue(thisValue, globalObject, value);
+    }
+
+    /// `ExpectArrayContaining.arrayValue` getter
+    /// This value will be visited by the garbage collector.
+    pub fn arrayValueGetCached(thisValue: JSC.JSValue) ?JSC.JSValue {
+        JSC.markBinding(@src());
+        const result = ExpectArrayContainingPrototype__arrayValueGetCachedValue(thisValue);
+        if (result == .zero)
+            return null;
+
+        return result;
+    }
+
+    /// Create a new instance of ExpectArrayContaining
+    pub fn toJS(this: *ExpectArrayContaining, globalObject: *JSC.JSGlobalObject) JSC.JSValue {
+        JSC.markBinding(@src());
+        if (comptime Environment.allow_assert) {
+            const value__ = ExpectArrayContaining__create(globalObject, this);
+            std.debug.assert(value__.as(ExpectArrayContaining).? == this); // If this fails, likely a C ABI issue.
+            return value__;
+        } else {
+            return ExpectArrayContaining__create(globalObject, this);
+        }
+    }
+
+    /// Modify the internal ptr to point to a new instance of ExpectArrayContaining.
+    pub fn dangerouslySetPtr(value: JSC.JSValue, ptr: ?*ExpectArrayContaining) bool {
+        JSC.markBinding(@src());
+        return ExpectArrayContaining__dangerouslySetPtr(value, ptr);
+    }
+
+    /// Detach the ptr from the thisValue
+    pub fn detachPtr(_: *ExpectArrayContaining, value: JSC.JSValue) void {
+        JSC.markBinding(@src());
+        std.debug.assert(ExpectArrayContaining__dangerouslySetPtr(value, null));
+    }
+
+    extern fn ExpectArrayContaining__fromJS(JSC.JSValue) ?*ExpectArrayContaining;
+    extern fn ExpectArrayContaining__getConstructor(*JSC.JSGlobalObject) JSC.JSValue;
+
+    extern fn ExpectArrayContaining__create(globalObject: *JSC.JSGlobalObject, ptr: ?*ExpectArrayContaining) JSC.JSValue;
+
+    extern fn ExpectArrayContaining__dangerouslySetPtr(JSC.JSValue, ?*ExpectArrayContaining) bool;
+
+    comptime {
+        if (@TypeOf(ExpectArrayContaining.finalize) != (fn (*ExpectArrayContaining) callconv(.C) void)) {
+            @compileLog("ExpectArrayContaining.finalize is not a finalizer");
+        }
+
+        if (@TypeOf(ExpectArrayContaining.call) != StaticCallbackType)
+            @compileLog("Expected ExpectArrayContaining.call to be a static callback");
+        if (!JSC.is_bindgen) {
+            @export(ExpectArrayContaining.call, .{ .name = "ExpectArrayContainingClass__call" });
+            @export(ExpectArrayContaining.finalize, .{ .name = "ExpectArrayContainingClass__finalize" });
+        }
+    }
+};
 pub const JSExpectStringContaining = struct {
     const ExpectStringContaining = Classes.ExpectStringContaining;
     const GetterType = fn (*ExpectStringContaining, *JSC.JSGlobalObject) callconv(.C) JSC.JSValue;
@@ -7006,6 +7087,7 @@ comptime {
     _ = JSExpect;
     _ = JSExpectAny;
     _ = JSExpectAnything;
+    _ = JSExpectArrayContaining;
     _ = JSExpectStringContaining;
     _ = JSExpectStringMatching;
     _ = JSFFI;
diff --git a/src/bun.js/bindings/generated_classes_list.zig b/src/bun.js/bindings/generated_classes_list.zig
index a86f74dd3..3b45f33b8 100644
--- a/src/bun.js/bindings/generated_classes_list.zig
+++ b/src/bun.js/bindings/generated_classes_list.zig
@@ -17,6 +17,7 @@ pub const Classes = struct {
     pub const ExpectAnything = JSC.Expect.ExpectAnything;
     pub const ExpectStringContaining = JSC.Expect.ExpectStringContaining;
     pub const ExpectStringMatching = JSC.Expect.ExpectStringMatching;
+    pub const ExpectArrayContaining = JSC.Expect.ExpectArrayContaining;
     pub const FileSystemRouter = JSC.API.FileSystemRouter;
     pub const Bundler = JSC.API.JSBundler;
     pub const JSBundler = Bundler;
diff --git a/src/bun.js/test/expect.zig b/src/bun.js/test/expect.zig
index 0d3ff663e..6434e3702 100644
--- a/src/bun.js/test/expect.zig
+++ b/src/bun.js/test/expect.zig
@@ -3437,8 +3437,11 @@ pub const Expect = struct {
         return ExpectStringMatching.call(globalObject, callFrame);
     }
 
+    pub fn arrayContaining(globalObject: *JSGlobalObject, callFrame: *JSC.CallFrame) callconv(.C) JSValue {
+        return ExpectArrayContaining.call(globalObject, callFrame);
+    }
+
     pub const extend = notImplementedStaticFn;
-    pub const arrayContaining = notImplementedStaticFn;
     pub const assertions = notImplementedStaticFn;
     pub const hasAssertions = notImplementedStaticFn;
     pub const objectContaining = notImplementedStaticFn;
@@ -3621,6 +3624,43 @@ pub const ExpectAny = struct {
     }
 };
 
+pub const ExpectArrayContaining = struct {
+    pub usingnamespace JSC.Codegen.JSExpectArrayContaining;
+
+    pub fn finalize(
+        this: *ExpectArrayContaining,
+    ) callconv(.C) void {
+        VirtualMachine.get().allocator.destroy(this);
+    }
+
+    pub fn call(globalObject: *JSC.JSGlobalObject, callFrame: *JSC.CallFrame) callconv(.C) JSValue {
+        const args = callFrame.arguments(1).slice();
+
+        if (args.len == 0 or !args[0].jsType().isArray()) {
+            const fmt = "<d>expect.<r>arrayContaining<d>(<r>array<d>)<r>\n\nExpected a array\n";
+            globalObject.throwPretty(fmt, .{});
+            return .zero;
+        }
+
+        const array_value = args[0];
+        const array_containing = globalObject.bunVM().allocator.create(ExpectArrayContaining) catch unreachable;
+
+        if (Jest.runner.?.pending_test == null) {
+            const err = globalObject.createErrorInstance("expect.arrayContaining() must be called in a test", .{});
+            err.put(globalObject, ZigString.static("name"), ZigString.init("TestNotRunningError").toValueGC(globalObject));
+            globalObject.throwValue(err);
+            return .zero;
+        }
+
+        const array_containing_js_value = array_containing.toJS(globalObject);
+        ExpectArrayContaining.arrayValueSetCached(array_containing_js_value, globalObject, array_value);
+
+        var vm = globalObject.bunVM();
+        vm.autoGarbageCollect();
+        return array_containing_js_value;
+    }
+};
+
 /// JSValue.zero is used to indicate it was not a JSMockFunction
 /// If there were no calls, it returns an empty JSArray*
 extern fn JSMockFunction__getCalls(JSValue) JSValue;
diff --git a/src/bun.js/test/jest.classes.ts b/src/bun.js/test/jest.classes.ts
index d40acbf07..186c8f9a8 100644
--- a/src/bun.js/test/jest.classes.ts
+++ b/src/bun.js/test/jest.classes.ts
@@ -49,6 +49,18 @@ export default [
     proto: {},
   }),
   define({
+    name: "ExpectArrayContaining",
+    construct: false,
+    noConstructor: true,
+    call: true,
+    finalize: true,
+    JSType: "0b11101110",
+    values: ["arrayValue"],
+    configurable: false,
+    klass: {},
+    proto: {},
+  }),
+  define({
     name: "Expect",
     construct: true,
     call: true,
diff --git a/test/js/bun/test/expect.test.js b/test/js/bun/test/expect.test.js
index 804a5339f..4b9e5ec22 100644
--- a/test/js/bun/test/expect.test.js
+++ b/test/js/bun/test/expect.test.js
@@ -1298,6 +1298,16 @@ describe("expect()", () => {
     a = { a: 1, b: 2, c: 3 };
     b = { a: 1, b: 2 };
     expect(a).not.toEqual(b);
+
+    array1 = [1, 2, 3];
+    expect(array1).toEqual(expect.arrayContaining([]));
+    expect(array1).toEqual(expect.arrayContaining([1, 2]));
+    expect(array1).not.toEqual(expect.arrayContaining([1, 2, 4]));
+
+    array2 = [{ a: 1, b: 2 }, { a: { a: 1 } }];
+    expect(array2).toEqual(expect.arrayContaining([{ a: 1, b: 2 }]));
+    expect(array2).toEqual(expect.arrayContaining([{ a: { a: 1 } }]));
+    expect(array2).not.toEqual(expect.arrayContaining([{ a: 2, b: 3 }]));
   });
 
   test("symbol based keys in arrays are processed correctly", () => {
@@ -2624,6 +2634,12 @@ describe("expect()", () => {
       expect({ a: [1, 2, 3] }).toMatchObject({ a: [1, 2, 3] });
       expect({ a: [1, 2, 4] }).not.toMatchObject({ a: [1, 2, 3] });
 
+      expect({ a: [1, 2, 3] }).toMatchObject({ a: expect.arrayContaining([1, 2]) });
+      expect({ a: [1, 2, 3] }).not.toMatchObject({ a: expect.arrayContaining([4]) });
+      expect({ a: ['hello', 'world'] }).toMatchObject({ a: expect.arrayContaining([]) });
+      expect({ a: ['hello', 'world'] }).toMatchObject({ a: expect.arrayContaining(['world']) });
+      expect({ a: ['hello', 'world'] }).not.toMatchObject({ a: expect.arrayContaining(['hello', 'mars']) });
+
       expect([]).toMatchObject([]);
       expect([]).toMatchObject({});
       expect({}).not.toMatchObject([]);