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Diffstat (limited to 'spec/ruby/optional/capi/struct_spec.rb')
| -rw-r--r-- | spec/ruby/optional/capi/struct_spec.rb | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/struct_spec.rb b/spec/ruby/optional/capi/struct_spec.rb new file mode 100644 index 0000000000..9a0eafeb7b --- /dev/null +++ b/spec/ruby/optional/capi/struct_spec.rb @@ -0,0 +1,209 @@ +require File.expand_path('../spec_helper', __FILE__) + +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, "CAPIStruct", "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::CAPIStruct.new.b.should be_nil + end + + it "creates a constant scoped under the namespace of the given class" do + CApiStructSpecs.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 + @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 + lambda { @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 + lambda { @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 + lambda { @s.rb_struct_aref(@struct, :d) }.should raise_error(NameError) + end + + it "raises an IndexError if the given index is out of range" do + lambda { @s.rb_struct_aref(@struct, -4) }.should raise_error(IndexError) + lambda { @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 + lambda { @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 + lambda { @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 + lambda { @s.rb_struct_aset(@struct, -4, 1) }.should raise_error(IndexError) + lambda { @s.rb_struct_aset(@struct, 3, 1) }.should raise_error(IndexError) + end + + it "raises a RuntimeError if the struct is frozen" do + @struct.freeze + lambda { @s.rb_struct_aset(@struct, :a, 1) }.should raise_error(RuntimeError) + 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 + + ruby_version_is "2.4" do + describe "rb_struct_size" do + it "returns the number of struct members" do + @s.rb_struct_size(@struct).should == 3 + end + end + end +end |