1 files changed, 61 insertions, 0 deletions
diff --git a/spec/rubyspec/core/enumerable/slice_after_spec.rb b/spec/rubyspec/core/enumerable/slice_after_spec.rb
new file mode 100644
index 0000000000..a199b9f1ed
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+++ b/spec/rubyspec/core/enumerable/slice_after_spec.rb
@@ -0,0 +1,61 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Enumerable#slice_after" do
+  before :each do
+    @enum = EnumerableSpecs::Numerous.new(7, 6, 5, 4, 3, 2, 1)
+  end
+
+  describe "when given an argument and no block" do
+    it "calls === on the argument to determine when to yield" do
+      arg = mock("filter")
+      arg.should_receive(:===).and_return(false, true, false, false, false, true, false)
+      e = @enum.slice_after(arg)
+      e.should be_an_instance_of(Enumerator)
+      e.to_a.should == [[7, 6], [5, 4, 3, 2], [1]]
+    end
+
+    it "doesn't yield an empty array if the filter matches the first entry or the last entry" do
+      arg = mock("filter")
+      arg.should_receive(:===).and_return(true).exactly(7)
+      e = @enum.slice_after(arg)
+      e.to_a.should == [[7], [6], [5], [4], [3], [2], [1]]
+    end
+
+    it "uses standard boolean as a test" do
+      arg = mock("filter")
+      arg.should_receive(:===).and_return(false, :foo, nil, false, false, 42, false)
+      e = @enum.slice_after(arg)
+      e.to_a.should == [[7, 6], [5, 4, 3, 2], [1]]
+    end
+  end
+
+  describe "when given a block" do
+    describe "and no argument" do
+      it "calls the block to determine when to yield" do
+        e = @enum.slice_after{ |i| i == 6 || i == 2 }
+        e.should be_an_instance_of(Enumerator)
+        e.to_a.should == [[7, 6], [5, 4, 3, 2], [1]]
+      end
+    end
+
+    describe "and an argument" do
+      it "raises an ArgumentError" do
+        lambda { @enum.slice_after(42) { |i| i == 6 } }.should raise_error(ArgumentError)
+      end
+    end
+  end
+
+  it "raises an ArgumentError when given an incorrect number of arguments" do
+    lambda { @enum.slice_after("one", "two") }.should raise_error(ArgumentError)
+    lambda { @enum.slice_after }.should raise_error(ArgumentError)
+  end
+end
+
+describe "when an iterator method yields more than one value" do
+  it "processes all yielded values" do
+    enum = EnumerableSpecs::YieldsMulti.new
+    result = enum.slice_after { |i| i == [3, 4, 5] }.to_a
+    result.should == [[[1, 2], [3, 4, 5]], [[6, 7, 8, 9]]]
+  end
+end