diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..dcad521
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,37 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+name: Unit Tests
+
+on:
+  push:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: 'Build & Test'
+    strategy:
+      matrix:
+        os: [macOS-latest]
+        arch: [x86_64, arm64]
+        dc: [ldc-beta, dmd-master]
+        build: [debug, release]
+      exclude:
+        - { dc: dmd-master, arch: arm64 }
+
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install compiler
+      uses: dlang-community/setup-dlang@v1.4.0
+      with:
+        compiler: ${{ matrix.dc }}
+
+    - name: 'Build and test with ${{ matrix.os }} ${{ matrix.dc }} (${{ matrix.build }})' 
+      run: |
+        dub test --config=unittest --build=${{ matrix.build }}
\ No newline at end of file
diff --git a/dub.sdl b/dub.sdl
index b9a2744..4f34012 100644
--- a/dub.sdl
+++ b/dub.sdl
@@ -16,6 +16,13 @@ configuration "static" {
     lflags "-framework" "Foundation" "-all_load"
 }
 
+configuration "unittest" {
+    platforms "osx"
+
+    lflags "-framework" "Foundation" "-all_load"
+    dependency "silly" version="~>1.0"
+}
+
 # For platforms that don't support it.
 configuration "other_platforms" {
     targetType "none"
diff --git a/source/foundation/nsarray.d b/source/foundation/nsarray.d
index 43a54b9..12d9461 100644
--- a/source/foundation/nsarray.d
+++ b/source/foundation/nsarray.d
@@ -19,6 +19,9 @@ import core.attribute : selector, optional;
 private alias iter_func(T) = int delegate(T);
 private alias iter_i_func(T) = int delegate(size_t, T);
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     A static ordered collection of objects.
 */
@@ -32,27 +35,31 @@ public:
     /**
         Creates and returns an empty array.
     */
-    static NSArray!T array() @selector("array");
+    static NSArray!T create() @selector("array");
 
     /**
         Creates and returns an array containing the objects in another given array.
     */
-    static NSArray!T array(ref NSArray!T array) @selector("arrayWithArray:");
+    static NSArray!T create(ref NSArray!T array) @selector("arrayWithArray:");
 
     /**
         Creates and returns an array containing a given object.
     */
-    static NSArray!T array(T object) @selector("arrayWithObject:");
+    static NSArray!T create(T object) @selector("arrayWithObject:");
 
     /**
         Creates and returns an array containing the objects in the argument list.
     */
-    static NSArray!T array(T firstObject, ...) @selector("arrayWithObjects:");
+    static NSArray!T create(T* objects, NSUInteger count) @selector("arrayWithObjects:count:");
 
     /**
-        Creates and returns an array containing the objects in the argument list.
+        Allows creating NSArrays from a D slice.
     */
-    static NSArray!T array(T* objects, NSUInteger count) @selector("arrayWithObjects:count:");
+    extern(D)
+    final // @suppress(dscanner.useless.final)
+    static NSArray!T create(T[] objects) {
+        return typeof(this).create(objects.ptr, objects.length);
+    }
 
     /**
         Allocates a new NSArray
@@ -159,6 +166,7 @@ public:
     final
     int opApply(scope iter_func!T dg) {
         auto ngc_dg = assumeNothrowNoGC!(iter_func!T)(dg);
+
         foreach (i; 0..length) {
             int result = ngc_dg(this[i]);
             if (result)
@@ -224,12 +232,6 @@ public:
     alias opDollar = length;
 }
 
-unittest {
-    NSString myString = NSString.alloc.init("");
-    NSArray!NSString myArray = NSArray!(NSString).array();
-    
-}
-
 /**
     A Mutable NSArray
 */
@@ -312,4 +314,38 @@ public:
     void opIndexAssign(DRTBindable value, size_t index) {
         this.message!void("insertObject:atIndex:", value, index);
     }
+}
+
+@("NSArray: multiple template instantiation")
+unittest {
+    NSArray!NSObject objarray;
+    NSArray!NSString strarray;
+}
+
+@("NSArray: create and index")
+unittest {
+    NSString myString = NSString.create("A");
+    NSString myString2 = NSString.create("B");
+    NSString[2] darray = [myString, myString2];
+
+    auto myArray = NSArray!(NSString).create(darray);
+
+    foreach(i; 0..myArray.length) {
+        assert(myArray[i].isEqual(darray[i]));
+    }
+}
+
+@("NSArray: foreach")
+unittest {
+    NSString myString = NSString.create("A");
+    NSString myString2 = NSString.create("B");
+    NSString[2] darray = [myString, myString2];
+
+    auto myArray = NSArray!(NSString).create(darray);
+
+    foreach(item; myArray)
+        assert(item !is null);
+
+    foreach_reverse(item; myArray)
+        assert(item !is null);
 }
\ No newline at end of file
diff --git a/source/foundation/nsbundle.d b/source/foundation/nsbundle.d
index 2de6c42..f20ff2d 100644
--- a/source/foundation/nsbundle.d
+++ b/source/foundation/nsbundle.d
@@ -15,8 +15,8 @@ import objc;
 
 import core.attribute : selector, optional;
 
-
 nothrow @nogc:
+version(D_ObjectiveC):
 
 /**
     Constants that describe the CPU types that a bundle’s executable code supports.
diff --git a/source/foundation/nscoder.d b/source/foundation/nscoder.d
index af29b0f..7fb857c 100644
--- a/source/foundation/nscoder.d
+++ b/source/foundation/nscoder.d
@@ -15,6 +15,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     A protocol that enables an object to be encoded and 
     decoded for archiving and distribution.
diff --git a/source/foundation/nsdictionary.d b/source/foundation/nsdictionary.d
index f66ca3b..7847a1d 100644
--- a/source/foundation/nsdictionary.d
+++ b/source/foundation/nsdictionary.d
@@ -15,6 +15,8 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
 
 /**
     NSDictionary
diff --git a/source/foundation/nsenumerator.d b/source/foundation/nsenumerator.d
index f002baf..a5d728c 100644
--- a/source/foundation/nsenumerator.d
+++ b/source/foundation/nsenumerator.d
@@ -14,9 +14,11 @@ import foundation;
 import objc;
 
 import core.attribute : selector, optional;
-
 import core.stdc.config : c_ulong;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     This defines the structure used as contextual information 
     in the NSFastEnumeration protocol.
diff --git a/source/foundation/nserror.d b/source/foundation/nserror.d
index ca0d66d..69f3871 100644
--- a/source/foundation/nserror.d
+++ b/source/foundation/nserror.d
@@ -15,6 +15,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     An error domain
 */
diff --git a/source/foundation/nsobject.d b/source/foundation/nsobject.d
index eb35dad..d19b347 100644
--- a/source/foundation/nsobject.d
+++ b/source/foundation/nsobject.d
@@ -15,6 +15,9 @@ import objc.basetypes;
 import objc;
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     Base class of all Objective-C classes.
 */
@@ -269,4 +272,5 @@ auto ref inout(T) released(T)(auto ref inout(T) value) if (isObjcClassInstance!T
 auto ref inout(T) autoreleased(T)(auto ref inout(T) value) if (isObjcClassInstance!T) {
     (cast(T)value).autorelease();
     return value;
-}
\ No newline at end of file
+}
+
diff --git a/source/foundation/nsproto.d b/source/foundation/nsproto.d
index b06b0aa..0df5f05 100644
--- a/source/foundation/nsproto.d
+++ b/source/foundation/nsproto.d
@@ -13,8 +13,12 @@ module foundation.nsproto;
 import foundation;
 import objc.basetypes;
 import objc.rt;
+
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     The base protocol all Objective-C protocols should follow.
 */
diff --git a/source/foundation/nsset.d b/source/foundation/nsset.d
index 17ec2f9..754f81f 100644
--- a/source/foundation/nsset.d
+++ b/source/foundation/nsset.d
@@ -11,4 +11,9 @@
 */
 module foundation.nsset;
 import foundation;
-import objc;
\ No newline at end of file
+import objc;
+
+
+
+nothrow @nogc:
+version(D_ObjectiveC):
diff --git a/source/foundation/nsstring.d b/source/foundation/nsstring.d
index 339f71a..f6c41a8 100644
--- a/source/foundation/nsstring.d
+++ b/source/foundation/nsstring.d
@@ -16,6 +16,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     The following constants are provided by NSString as 
     possible string encodings.
@@ -639,7 +642,8 @@ public:
         Converts to a D string.
     */
     extern(D)
-    final string toString() {
+    final // @suppress(dscanner.useless.final)
+    string toString() {
         return cast(string)ptr[0..length];
     }
 }
diff --git a/source/foundation/nsurl.d b/source/foundation/nsurl.d
index 5fe0c6e..5be467a 100644
--- a/source/foundation/nsurl.d
+++ b/source/foundation/nsurl.d
@@ -15,6 +15,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     An object that represents the location of a resource, such as an item on a 
     remote server or the path to a local file. 
diff --git a/source/foundation/nsvalue.d b/source/foundation/nsvalue.d
index 5d97328..ef78044 100644
--- a/source/foundation/nsvalue.d
+++ b/source/foundation/nsvalue.d
@@ -15,6 +15,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     A simple container for a single C or Objective-C data item.
 */
@@ -208,12 +211,4 @@ public:
         Gets whether this number is equal to another.
     */
     bool isEqual(NSNumber other) @selector("isEqualToNumber:");
-
-    /**
-        Implements equality comparison
-    */
-    extern(D)
-    bool opEquals(T)(T other) if (is(T : NSNumber)) {
-        return this.isEqual(other.self_);
-    }
 }
\ No newline at end of file
diff --git a/source/foundation/nszone.d b/source/foundation/nszone.d
index 87f6fd7..ef17e67 100644
--- a/source/foundation/nszone.d
+++ b/source/foundation/nszone.d
@@ -15,6 +15,9 @@ import objc;
 
 import core.attribute : selector, optional;
 
+nothrow @nogc:
+version(D_ObjectiveC):
+
 /**
     A protocol that objects adopt to provide functional copies of themselves.
 */