require_relative 'spec_helper' load_extension("struct") describe "C-API Struct function" do before :each do @s = CApiStructSpecs.new @struct = @s.rb_struct_define("CAPIStruct", "a", "b", "c") end after :each do Struct.send(:remove_const, :CAPIStruct) end describe "rb_struct_define" do it "creates accessors for the struct members" do instance = @struct.new instance.a = 1 instance.b = 2 instance.c = 3 instance.a.should == 1 instance.b.should == 2 instance.c.should == 3 end it "has a value of nil for the member of a newly created instance" do # Verify that attributes are on an instance basis Struct::CAPIStruct.new.b.should be_nil end it "creates a constant scoped under Struct for the named Struct" do Struct.should have_constant(:CAPIStruct) end it "returns the member names as Symbols" do @struct.members.should == [:a, :b, :c] end end end describe "C-API Struct function" do before :each do @s = CApiStructSpecs.new @struct = @s.rb_struct_define(nil, "a", "b", "c") end describe "rb_struct_define for an anonymous struct" do it "creates accessors for the struct members" do instance = @struct.new instance.a = 1 instance.b = 2 instance.c = 3 instance.a.should == 1 instance.b.should == 2 instance.c.should == 3 end it "returns the member names as Symbols" do @struct.members.should == [:a, :b, :c] end end end describe "C-API Struct function" do before :each do @s = CApiStructSpecs.new @struct = @s.rb_struct_define_under(CApiStructSpecs, "CAPIStructUnder", "a", "b", "c") end describe "rb_struct_define_under" do it "creates accessors for the struct members" do instance = @struct.new instance.a = 1 instance.b = 2 instance.c = 3 instance.a.should == 1 instance.b.should == 2 instance.c.should == 3 end it "has a value of nil for the member of a newly created instance" do # Verify that attributes are on an instance basis CApiStructSpecs::CAPIStructUnder.new.b.should be_nil end it "does not create a constant scoped under Struct for the named Struct" do Struct.should_not have_constant(:CAPIStructUnder) end it "creates a constant scoped under the namespace of the given class" do CApiStructSpecs.should have_constant(:CAPIStructUnder) end it "returns the member names as Symbols" do @struct.members.should == [:a, :b, :c] end end end describe "C-API Struct function" do before :each do @s = CApiStructSpecs.new @klass = Struct.new(:a, :b, :c) @struct = @klass.new end describe "rb_struct_define" do it "raises an ArgumentError if arguments contain duplicate member name" do -> { @s.rb_struct_define(nil, "a", "b", "a") }.should raise_error(ArgumentError) end it "raises a NameError if an invalid constant name is given" do -> { @s.rb_struct_define("foo", "a", "b", "c") }.should raise_error(NameError) end end describe "rb_struct_aref" do it "returns the value of a struct member with a symbol key" do @struct[:a] = 2 @s.rb_struct_aref(@struct, :a).should == 2 end it "returns the value of a struct member with a string key" do @struct[:b] = 2 @s.rb_struct_aref(@struct, "b").should == 2 end it "returns the value of a struct member by index" do @struct[:c] = 3 @s.rb_struct_aref(@struct, 2).should == 3 end it "raises a NameError if the struct member does not exist" do -> { @s.rb_struct_aref(@struct, :d) }.should raise_error(NameError) end it "raises an IndexError if the given index is out of range" do -> { @s.rb_struct_aref(@struct, -4) }.should raise_error(IndexError) -> { @s.rb_struct_aref(@struct, 3) }.should raise_error(IndexError) end end describe "rb_struct_getmember" do it "returns the value of a struct member" do @struct[:a] = 2 @s.rb_struct_getmember(@struct, :a).should == 2 end it "raises a NameError if the struct member does not exist" do -> { @s.rb_struct_getmember(@struct, :d) }.should raise_error(NameError) end end describe "rb_struct_s_members" do it "returns the struct members as an array of symbols" do @s.rb_struct_s_members(@klass).should == [:a, :b, :c] end end describe "rb_struct_members" do it "returns the struct members as an array of symbols" do @s.rb_struct_members(@struct).should == [:a, :b, :c] end end describe "rb_struct_aset" do it "sets the value of a struct member with a symbol key" do @s.rb_struct_aset(@struct, :a, 1) @struct[:a].should == 1 end it "sets the value of a struct member with a string key" do @s.rb_struct_aset(@struct, "b", 1) @struct[:b].should == 1 end it "sets the value of a struct member by index" do @s.rb_struct_aset(@struct, 2, 1) @struct[:c].should == 1 end it "raises a NameError if the struct member does not exist" do -> { @s.rb_struct_aset(@struct, :d, 1) }.should raise_error(NameError) end it "raises an IndexError if the given index is out of range" do -> { @s.rb_struct_aset(@struct, -4, 1) }.should raise_error(IndexError) -> { @s.rb_struct_aset(@struct, 3, 1) }.should raise_error(IndexError) end it "raises a FrozenError if the struct is frozen" do @struct.freeze -> { @s.rb_struct_aset(@struct, :a, 1) }.should raise_error(FrozenError) end end describe "rb_struct_new" do it "creates a new instance of a struct" do i = @s.rb_struct_new(@klass, 1, 2, 3) i.a.should == 1 i.b.should == 2 i.c.should == 3 end end describe "rb_struct_size" do it "returns the number of struct members" do @s.rb_struct_size(@struct).should == 3 end end end