test/array_test.rb in bindata-2.4.15 vs test/array_test.rb in bindata-2.5.0

@@ -16,21 +16,19 @@
       _ { BinData::Array.new(args) }.must_raise ArgumentError
     end
   end
 
   it "warns about :length" do
-    Kernel.must_warn ":length is not used with BinData::Array.  You probably want to change this to :initial_length" do
-    obj = BinData::Array.new(type: :uint8, length: 3)
-      obj.read "123"
-    end
+    _ {
+      BinData::Array.new(type: :uint8, length: 3)
+    }.must_warn ":length is not used with BinData::Array.  You probably want to change this to :initial_length"
   end
 
   it "warns about :read_length" do
-    Kernel.must_warn ":read_length is not used with BinData::Array.  You probably want to change this to :initial_length" do
-    obj = BinData::Array.new(type: :uint8, read_length: 3)
-      obj.read "123"
-    end
+    _ {
+      BinData::Array.new(type: :uint8, read_length: 3)
+    }.must_warn ":read_length is not used with BinData::Array.  You probably want to change this to :initial_length"
   end
 
   it "fails if a given type is unknown" do
     args = {type: :does_not_exist, initial_length: 3}
     _ { BinData::Array.new(args) }.must_raise BinData::UnRegisteredTypeError
@@ -68,9 +66,13 @@
     _(obj.first(3)).must_equal []
   end
 
   it "returns [] for the last n elements" do
     _(obj.last(3)).must_equal []
+  end
+
+  it "won't assign nil" do
+    _ { obj.assign(nil) }.must_raise ArgumentError
   end
 end
 
 describe BinData::Array, "with several elements" do
   let(:obj) {