1 files changed, 48 insertions, 0 deletions
diff --git a/spec/ruby/core/array/pack/shared/string.rb b/spec/ruby/core/array/pack/shared/string.rb
new file mode 100644
index 0000000000..805f78b53b
--- /dev/null
+++ b/spec/ruby/core/array/pack/shared/string.rb
@@ -0,0 +1,48 @@
+# encoding: binary
+describe :array_pack_string, shared: true do
+  it "adds count bytes of a String to the output" do
+    ["abc"].pack(pack_format(2)).should == "ab"
+  end
+
+  it "implicitly has a count of one when no count is specified" do
+    ["abc"].pack(pack_format).should == "a"
+  end
+
+  it "does not add any bytes when the count is zero" do
+    ["abc"].pack(pack_format(0)).should == ""
+  end
+
+  it "is not affected by a previous count modifier" do
+    ["abcde", "defg"].pack(pack_format(3)+pack_format).should == "abcd"
+  end
+
+  it "raises an ArgumentError when the Array is empty" do
+    -> { [].pack(pack_format) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an ArgumentError when the Array has too few elements" do
+    -> { ["a"].pack(pack_format(nil, 2)) }.should raise_error(ArgumentError)
+  end
+
+  it "calls #to_str to convert the element to a String" do
+    obj = mock('pack string')
+    obj.should_receive(:to_str).and_return("abc")
+
+    [obj].pack(pack_format).should == "a"
+  end
+
+  it "raises a TypeError when the object does not respond to #to_str" do
+    obj = mock("not a string")
+    -> { [obj].pack(pack_format) }.should raise_error(TypeError)
+  end
+
+  it "returns a string in encoding of common to the concatenated results" do
+    f = pack_format("*")
+    [ [["\u{3042 3044 3046 3048}", 0x2000B].pack(f+"U"),       Encoding::BINARY],
+      [["abcde\xd1", "\xFF\xFe\x81\x82"].pack(f+"u"),          Encoding::BINARY],
+      [["a".dup.force_encoding("ascii"), "\xFF\xFe\x81\x82"].pack(f+"u"), Encoding::BINARY],
+      # under discussion [ruby-dev:37294]
+      [["\u{3042 3044 3046 3048}", 1].pack(f+"N"),             Encoding::BINARY]
+    ].should be_computed_by(:encoding)
+  end
+end