add language/splat specs

test/test-android/app/language/splat_spec.rb

@@ -0,0 +1,132 @@
+class SplatSpec_Mock1 < Java::Lang::Object
+  def to_a
+    ['foo']
+  end
+end
+
+class SplatSpec_Mock2 < Java::Lang::Object
+  def to_a
+    nil
+  end
+end
+
+describe "Splat operator" do
+  describe "used to assign a splatted object to an object" do
+    it "assigns an empty array when the splatted object is nil" do
+      a = *nil; a.should == []
+    end
+
+    it "assigns an empty array when the splatted object is an empty array" do
+      a = *[]; a.should == []
+    end
+
+    it "assigns the splatted object contained into an array when the splatted object doesn't respond to to_a" do
+      a = *1; a.should == [1]
+    end
+
+    it "assigns the returned value of to_a when the splatted object responds to to_a" do
+      o = SplatSpec_Mock1.new
+      a = *o; a.should == ["foo"]
+    end
+
+    it "assigns the object in a new array when it responds to to_a but to_a returns nil" do
+      o = SplatSpec_Mock2.new
+      a = *o; a.should == [o]
+    end
+
+    it "assigns an array with nil object if the content of the splatted array is nil" do
+      a = *[nil]; a.should == [nil]
+    end
+
+    it "assings an array with an empty array when the splatted array contains an empty array" do
+      a = *[[]]; a.should == [[]]
+    end
+
+    it "assigns an empty array when the content of the splatted array is an empty splatted array" do
+      a = *[*[]]; a.should == []
+    end
+
+    it "assigns the second array when the content of the splatted array is a non empty splatted array" do
+      a = *[*[1]]; a.should == [1]
+    end
+
+    it "assigns the second array when the splatted array contains a splatted array with more than one element" do
+      a = *[*[1, 2]]; a.should == [1, 2]
+    end
+  end
+
+  describe "used to assign an object to a splatted reference" do
+    it "assigns an array with a nil object when the object is nil" do
+      *a = nil; a.should == [nil]
+    end
+
+    it "assigns an array containing the object when the object is not an array" do
+      *a = 1; a.should == [1]
+    end
+
+    it "assigns the object when the object is an array" do
+      *a = []; a.should == []
+      *a = [1]; a.should == [1]
+      *a = [nil]; a.should == [nil]
+      *a = [1,2]; a.should == [1,2]
+    end
+
+    it "assigns the splatted array when the object is an array that contains an splatted array" do
+      *a = [*[]]; a.should == []
+      *a = [*[1]]; a.should == [1]
+      *a = [*[1,2]]; a.should == [1,2]
+    end
+  end
+
+  describe "used to assign a splatted object to a splatted reference" do
+    it "assigns an empty array when the splatted object is an empty array" do
+      *a = *[]; a.should == []
+    end
+
+    it "assigns an array containing the splatted object when the splatted object is not an array" do
+      *a = *1; a.should == [1]
+    end
+
+    it "assigns an array when the splatted object is an array" do
+      *a = *[1,2]; a.should == [1,2]
+      *a = *[1]; a.should == [1]
+      *a = *[nil]; a.should == [nil]
+    end
+
+    it "assigns an empty array when the splatted object is an array that contains an empty splatted array" do
+      *a = *[*[]]; a.should == []
+      *a = *[*[1]]; a.should == [1]
+      *a = *[*[1,2]]; a.should == [1,2]
+    end
+
+    it "assigns an empty array when the splatted object is nil" do
+      *a = *nil; a.should == []
+    end
+  end
+
+  describe "used to assign splatted objects to multiple block variables" do
+    it "assigns nil to normal variables but empty array to references when the splatted object is nil" do
+      a,b,*c = *nil; [a,b,c].should == [nil, nil, []]
+    end
+
+    it "assigns nil to normal variables but empty array to references when the splatted object is an empty array" do
+      a,b,*c = *[]; [a,b,c].should == [nil, nil, []]
+    end
+
+    it "assigns the splatted object to the first variable and behaves like nil when the splatted object is not an array" do
+      a,b,*c = *1; [a,b,c].should == [1, nil, []]
+    end
+
+    it "assigns array values to normal variables but arrays containing elements to references" do
+      a,b,*c = *[1,2,3]; [a,b,c].should == [1,2,[3]]
+    end
+
+    it "assigns and empty array to the variable if the splatted object contains an empty array" do
+      a,b,*c = *[[]]; [a,b,c].should == [[], nil, []]
+    end
+
+    it "assigns the values of a splatted array when the splatted object contains an splatted array" do
+      a,b,*c = *[*[1,2,3]]; [a,b,c].should == [1,2,[3]]
+    end
+  end
+end