1 files changed, 32 insertions, 0 deletions
diff --git a/spec/rubyspec/core/array/pack/z_spec.rb b/spec/rubyspec/core/array/pack/z_spec.rb
new file mode 100644
index 0000000000..b28a460a8e
--- /dev/null
+++ b/spec/rubyspec/core/array/pack/z_spec.rb
@@ -0,0 +1,32 @@
+# -*- encoding: ascii-8bit -*-
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+require File.expand_path('../shared/basic', __FILE__)
+require File.expand_path('../shared/string', __FILE__)
+
+describe "Array#pack with format 'Z'" do
+  it_behaves_like :array_pack_basic, 'Z'
+  it_behaves_like :array_pack_basic_non_float, 'Z'
+  it_behaves_like :array_pack_no_platform, 'Z'
+  it_behaves_like :array_pack_string, 'Z'
+
+  it "adds all the bytes and appends a NULL byte when passed the '*' modifier" do
+    ["abc"].pack("Z*").should == "abc\x00"
+  end
+
+  it "padds the output with NULL bytes when the count exceeds the size of the String" do
+    ["abc"].pack("Z6").should == "abc\x00\x00\x00"
+  end
+
+  it "adds a NULL byte when the value is nil" do
+    [nil].pack("Z").should == "\x00"
+  end
+
+  it "pads the output with NULL bytes when the value is nil" do
+    [nil].pack("Z3").should == "\x00\x00\x00"
+  end
+
+  it "does not append a NULL byte when passed the '*' modifier and the value is nil" do
+    [nil].pack("Z*").should == "\x00"
+  end
+end