1 files changed, 61 insertions, 0 deletions
diff --git a/spec/ruby/core/string/new_spec.rb b/spec/ruby/core/string/new_spec.rb
new file mode 100644
index 0000000000..ca678f5323
--- /dev/null
+++ b/spec/ruby/core/string/new_spec.rb
@@ -0,0 +1,61 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "String.new" do
+  it "returns an instance of String" do
+    str = String.new
+    str.should be_an_instance_of(String)
+  end
+
+  it "accepts an encoding argument" do
+    xA4xA2 = [0xA4, 0xA2].pack('CC').force_encoding 'utf-8'
+    str = String.new(xA4xA2, encoding: 'euc-jp')
+    str.encoding.should == Encoding::EUC_JP
+  end
+
+  it "accepts a capacity argument" do
+    String.new("", capacity: 100_000).should == ""
+    String.new("abc", capacity: 100_000).should == "abc"
+  end
+
+  it "returns a fully-formed String" do
+    str = String.new
+    str.size.should == 0
+    str << "more"
+    str.should == "more"
+  end
+
+  it "returns a new string given a string argument" do
+    str1 = "test"
+    str = String.new(str1)
+    str.should be_an_instance_of(String)
+    str.should == str1
+    str << "more"
+    str.should == "testmore"
+  end
+
+  it "returns an instance of a subclass" do
+    a = StringSpecs::MyString.new("blah")
+    a.should be_an_instance_of(StringSpecs::MyString)
+    a.should == "blah"
+  end
+
+  it "is called on subclasses" do
+    s = StringSpecs::SubString.new
+    s.special.should == nil
+    s.should == ""
+
+    s = StringSpecs::SubString.new "subclass"
+    s.special.should == "subclass"
+    s.should == ""
+  end
+
+  it "raises TypeError on inconvertible object" do
+    -> { String.new 5 }.should raise_error(TypeError)
+    -> { String.new nil }.should raise_error(TypeError)
+  end
+
+  it "returns a binary String" do
+    String.new.encoding.should == Encoding::BINARY
+  end
+end