From 1d15d5f08032acf1b7bceacbb450d617ff6e0931 Mon Sep 17 00:00:00 2001
From: eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 20 Sep 2017 20:18:52 +0000
Subject: Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 spec/ruby/core/array/transpose_spec.rb | 53 ++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 spec/ruby/core/array/transpose_spec.rb

(limited to 'spec/ruby/core/array/transpose_spec.rb')

diff --git a/spec/ruby/core/array/transpose_spec.rb b/spec/ruby/core/array/transpose_spec.rb
new file mode 100644
index 0000000000..a8edad7bab
--- /dev/null
+++ b/spec/ruby/core/array/transpose_spec.rb
@@ -0,0 +1,53 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Array#transpose" do
+  it "assumes an array of arrays and returns the result of transposing rows and columns" do
+    [[1, 'a'], [2, 'b'], [3, 'c']].transpose.should == [[1, 2, 3], ["a", "b", "c"]]
+    [[1, 2, 3], ["a", "b", "c"]].transpose.should == [[1, 'a'], [2, 'b'], [3, 'c']]
+    [].transpose.should == []
+    [[]].transpose.should == []
+    [[], []].transpose.should == []
+    [[0]].transpose.should == [[0]]
+    [[0], [1]].transpose.should == [[0, 1]]
+  end
+
+  it "tries to convert the passed argument to an Array using #to_ary" do
+    obj = mock('[1,2]')
+    obj.should_receive(:to_ary).and_return([1, 2])
+    [obj, [:a, :b]].transpose.should == [[1, :a], [2, :b]]
+  end
+
+  it "properly handles recursive arrays" do
+    empty = ArraySpecs.empty_recursive_array
+    empty.transpose.should == empty
+
+    a = []; a << a
+    b = []; b << b
+    [a, b].transpose.should == [[a, b]]
+
+    a = [1]; a << a
+    b = [2]; b << b
+    [a, b].transpose.should == [ [1, 2], [a, b] ]
+  end
+
+  it "raises a TypeError if the passed Argument does not respond to #to_ary" do
+    lambda { [Object.new, [:a, :b]].transpose }.should raise_error(TypeError)
+  end
+
+  it "does not call to_ary on array subclass elements" do
+    ary = [ArraySpecs::ToAryArray[1, 2], ArraySpecs::ToAryArray[4, 6]]
+    ary.transpose.should == [[1, 4], [2, 6]]
+  end
+
+  it "raises an IndexError if the arrays are not of the same length" do
+    lambda { [[1, 2], [:a]].transpose }.should raise_error(IndexError)
+  end
+
+  it "does not return subclass instance on Array subclasses" do
+    result = ArraySpecs::MyArray[ArraySpecs::MyArray[1, 2, 3], ArraySpecs::MyArray[4, 5, 6]].transpose
+    result.should be_an_instance_of(Array)
+    result[0].should be_an_instance_of(Array)
+    result[1].should be_an_instance_of(Array)
+  end
+end
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