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-rw-r--r--spec/rubyspec/optional/capi/kernel_spec.rb476
1 files changed, 476 insertions, 0 deletions
diff --git a/spec/rubyspec/optional/capi/kernel_spec.rb b/spec/rubyspec/optional/capi/kernel_spec.rb
new file mode 100644
index 0000000000..4fbebdd680
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+++ b/spec/rubyspec/optional/capi/kernel_spec.rb
@@ -0,0 +1,476 @@
+require File.expand_path('../spec_helper', __FILE__)
+
+load_extension("kernel")
+
+describe "C-API Kernel function" do
+ before :each do
+ @s = CApiKernelSpecs.new
+ end
+
+ describe "rb_block_given_p" do
+ it "returns false if no block is passed" do
+ @s.rb_block_given_p.should == false
+ end
+
+ it "returns true if a block is passed" do
+ (@s.rb_block_given_p { puts "FOO" } ).should == true
+ end
+ end
+
+ describe "rb_need_block" do
+ it "raises a LocalJumpError if no block is given" do
+ lambda { @s.rb_need_block }.should raise_error(LocalJumpError)
+ end
+
+ it "does not raise a LocalJumpError if a block is given" do
+ @s.rb_need_block { }.should == nil
+ end
+ end
+
+ describe "rb_block_call" do
+ before :each do
+ ScratchPad.record []
+ end
+
+ it "calls the block with a single argument" do
+ ary = [1, 3, 5]
+ @s.rb_block_call(ary).should == [2, 4, 6]
+ end
+
+ it "calls the block with multiple arguments in argc / argv" do
+ ary = [1, 3, 5]
+ @s.rb_block_call_multi_arg(ary).should == 9
+ end
+
+ it "calls the method with no function callback and no block" do
+ ary = [1, 3, 5]
+ @s.rb_block_call_no_func(ary).should be_kind_of(Enumerator)
+ end
+
+ it "calls the method with no function callback and a block" do
+ ary = [1, 3, 5]
+ @s.rb_block_call_no_func(ary) do |i|
+ i + 1
+ end.should == [2, 4, 6]
+ end
+ end
+
+ describe "rb_raise" do
+ it "raises an exception" do
+ lambda { @s.rb_raise({}) }.should raise_error(TypeError)
+ end
+
+ it "terminates the function at the point it was called" do
+ h = {}
+ lambda { @s.rb_raise(h) }.should raise_error(TypeError)
+ h[:stage].should == :before
+ end
+ end
+
+ describe "rb_throw" do
+ before :each do
+ ScratchPad.record []
+ end
+
+ it "sets the return value of the catch block to the specified value" do
+ catch(:foo) do
+ @s.rb_throw(:return_value)
+ end.should == :return_value
+ end
+
+ it "terminates the function at the point it was called" do
+ catch(:foo) do
+ ScratchPad << :before_throw
+ @s.rb_throw(:thrown_value)
+ ScratchPad << :after_throw
+ end.should == :thrown_value
+ ScratchPad.recorded.should == [:before_throw]
+ end
+
+ it "raises an ArgumentError if there is no catch block for the symbol" do
+ lambda { @s.rb_throw(nil) }.should raise_error(ArgumentError)
+ end
+ end
+
+ describe "rb_throw_obj" do
+ before :each do
+ ScratchPad.record []
+ @tag = Object.new
+ end
+
+ it "sets the return value of the catch block to the specified value" do
+ catch(@tag) do
+ @s.rb_throw_obj(@tag, :thrown_value)
+ end.should == :thrown_value
+ end
+
+ it "terminates the function at the point it was called" do
+ catch(@tag) do
+ ScratchPad << :before_throw
+ @s.rb_throw_obj(@tag, :thrown_value)
+ ScratchPad << :after_throw
+ end.should == :thrown_value
+ ScratchPad.recorded.should == [:before_throw]
+ end
+
+ it "raises an ArgumentError if there is no catch block for the symbol" do
+ lambda { @s.rb_throw(nil) }.should raise_error(ArgumentError)
+ end
+ end
+
+ describe "rb_warn" do
+ before :each do
+ @stderr, $stderr = $stderr, IOStub.new
+ @verbose = $VERBOSE
+ end
+
+ after :each do
+ $stderr = @stderr
+ $VERBOSE = @verbose
+ end
+
+ it "prints a message to $stderr if $VERBOSE evaluates to true" do
+ $VERBOSE = true
+ @s.rb_warn("This is a warning")
+ $stderr.should =~ /This is a warning/
+ end
+
+ it "prints a message to $stderr if $VERBOSE evaluates to false" do
+ $VERBOSE = false
+ @s.rb_warn("This is a warning")
+ $stderr.should =~ /This is a warning/
+ end
+ end
+
+ describe "rb_sys_fail" do
+ it "raises an exception from the value of errno" do
+ lambda do
+ @s.rb_sys_fail("additional info")
+ end.should raise_error(SystemCallError, /additional info/)
+ end
+
+ it "can take a NULL message" do
+ lambda do
+ @s.rb_sys_fail(nil)
+ end.should raise_error(Errno::EPERM)
+ end
+ end
+
+ describe "rb_syserr_fail" do
+ it "raises an exception from the given error" do
+ lambda do
+ @s.rb_syserr_fail(Errno::EINVAL::Errno, "additional info")
+ end.should raise_error(Errno::EINVAL, /additional info/)
+ end
+
+ it "can take a NULL message" do
+ lambda do
+ @s.rb_syserr_fail(Errno::EINVAL::Errno, nil)
+ end.should raise_error(Errno::EINVAL)
+ end
+ end
+
+ describe "rb_yield" do
+ it "yields passed argument" do
+ ret = nil
+ @s.rb_yield(1) { |z| ret = z }
+ ret.should == 1
+ end
+
+ it "returns the result from block evaluation" do
+ @s.rb_yield(1) { |z| z * 1000 }.should == 1000
+ end
+
+ it "raises LocalJumpError when no block is given" do
+ lambda { @s.rb_yield(1) }.should raise_error(LocalJumpError)
+ end
+ end
+
+ describe "rb_yield_values" do
+ it "yields passed arguments" do
+ ret = nil
+ @s.rb_yield_values(1, 2) { |x, y| ret = x + y }
+ ret.should == 3
+ end
+
+ it "returns the result from block evaluation" do
+ @s.rb_yield_values(1, 2) { |x, y| x + y }.should == 3
+ end
+
+ it "raises LocalJumpError when no block is given" do
+ lambda { @s.rb_yield_splat([1, 2]) }.should raise_error(LocalJumpError)
+ end
+ end
+
+ describe "rb_yield_splat" do
+ it "yields with passed array's contents" do
+ ret = nil
+ @s.rb_yield_splat([1, 2]) { |x, y| ret = x + y }
+ ret.should == 3
+ end
+
+ it "returns the result from block evaluation" do
+ @s.rb_yield_splat([1, 2]) { |x, y| x + y }.should == 3
+ end
+
+ it "raises LocalJumpError when no block is given" do
+ lambda { @s.rb_yield_splat([1, 2]) }.should raise_error(LocalJumpError)
+ end
+ end
+
+ describe "rb_rescue" do
+ before :each do
+ @proc = lambda { |x| x }
+ @raise_proc_returns_sentinel = lambda {|*_| :raise_proc_executed }
+ @raise_proc_returns_arg = lambda {|*a| a }
+ @arg_error_proc = lambda { |*_| raise ArgumentError, '' }
+ @std_error_proc = lambda { |*_| raise StandardError, '' }
+ @exc_error_proc = lambda { |*_| raise Exception, '' }
+ end
+
+ it "executes passed function" do
+ @s.rb_rescue(@proc, :no_exc, @raise_proc_returns_arg, :exc).should == :no_exc
+ end
+
+ it "executes passed 'raise function' if a StandardError exception is raised" do
+ @s.rb_rescue(@arg_error_proc, nil, @raise_proc_returns_sentinel, :exc).should == :raise_proc_executed
+ @s.rb_rescue(@std_error_proc, nil, @raise_proc_returns_sentinel, :exc).should == :raise_proc_executed
+ end
+
+ it "passes the user supplied argument to the 'raise function' if a StandardError exception is raised" do
+ arg1, _ = @s.rb_rescue(@arg_error_proc, nil, @raise_proc_returns_arg, :exc1)
+ arg1.should == :exc1
+
+ arg2, _ = @s.rb_rescue(@std_error_proc, nil, @raise_proc_returns_arg, :exc2)
+ arg2.should == :exc2
+ end
+
+ it "passes the raised exception to the 'raise function' if a StandardError exception is raised" do
+ _, exc1 = @s.rb_rescue(@arg_error_proc, nil, @raise_proc_returns_arg, :exc)
+ exc1.class.should == ArgumentError
+
+ _, exc2 = @s.rb_rescue(@std_error_proc, nil, @raise_proc_returns_arg, :exc)
+ exc2.class.should == StandardError
+ end
+
+ it "raises an exception if passed function raises an exception other than StandardError" do
+ lambda { @s.rb_rescue(@exc_error_proc, nil, @raise_proc_returns_arg, nil) }.should raise_error(Exception)
+ end
+
+ it "raises an exception if any exception is raised inside 'raise function'" do
+ lambda { @s.rb_rescue(@std_error_proc, nil, @std_error_proc, nil) }.should raise_error(StandardError)
+ end
+
+ it "makes $! available only during 'raise function' execution" do
+ @s.rb_rescue(@std_error_proc, nil, lambda { |*_| $! }, nil).class.should == StandardError
+ $!.should == nil
+ end
+
+ it "returns the break value if the passed function yields to a block with a break" do
+ def proc_caller
+ @s.rb_rescue(lambda { |*_| yield }, nil, @proc, nil)
+ end
+
+ proc_caller { break :value }.should == :value
+ end
+ end
+
+ describe "rb_rescue2" do
+ it "only rescues if one of the passed exceptions is raised" do
+ proc = lambda { |x| x }
+ arg_error_proc = lambda { |*_| raise ArgumentError, '' }
+ run_error_proc = lambda { |*_| raise RuntimeError, '' }
+ type_error_proc = lambda { |*_| raise TypeError, '' }
+ @s.rb_rescue2(arg_error_proc, :no_exc, proc, :exc, ArgumentError, RuntimeError).should == :exc
+ @s.rb_rescue2(run_error_proc, :no_exc, proc, :exc, ArgumentError, RuntimeError).should == :exc
+ lambda {
+ @s.rb_rescue2(type_error_proc, :no_exc, proc, :exc, ArgumentError, RuntimeError)
+ }.should raise_error(TypeError)
+ end
+ end
+
+ describe "rb_catch" do
+ before :each do
+ ScratchPad.record []
+ end
+
+ it "executes passed function" do
+ @s.rb_catch("foo", lambda { 1 }).should == 1
+ end
+
+ it "terminates the function at the point it was called" do
+ proc = lambda do
+ ScratchPad << :before_throw
+ throw :thrown_value
+ ScratchPad << :after_throw
+ end
+ @s.rb_catch("thrown_value", proc).should be_nil
+ ScratchPad.recorded.should == [:before_throw]
+ end
+
+ it "raises an ArgumentError if the throw symbol isn't caught" do
+ lambda { @s.rb_catch("foo", lambda { throw :bar }) }.should raise_error(ArgumentError)
+ end
+ end
+
+ describe "rb_catch_obj" do
+
+ before :each do
+ ScratchPad.record []
+ @tag = Object.new
+ end
+
+ it "executes passed function" do
+ @s.rb_catch_obj(@tag, lambda { 1 }).should == 1
+ end
+
+ it "terminates the function at the point it was called" do
+ proc = lambda do
+ ScratchPad << :before_throw
+ throw @tag
+ ScratchPad << :after_throw
+ end
+ @s.rb_catch_obj(@tag, proc).should be_nil
+ ScratchPad.recorded.should == [:before_throw]
+ end
+
+ it "raises an ArgumentError if the throw symbol isn't caught" do
+ lambda { @s.rb_catch("foo", lambda { throw :bar }) }.should raise_error(ArgumentError)
+ end
+ end
+
+ describe "rb_ensure" do
+ it "executes passed function and returns its value" do
+ proc = lambda { |x| x }
+ @s.rb_ensure(proc, :proc, proc, :ensure_proc).should == :proc
+ end
+
+ it "executes passed 'ensure function' when no exception is raised" do
+ foo = nil
+ proc = lambda { |*_| }
+ ensure_proc = lambda { |x| foo = x }
+ @s.rb_ensure(proc, nil, ensure_proc, :foo)
+ foo.should == :foo
+ end
+
+ it "executes passed 'ensure function' when an exception is raised" do
+ foo = nil
+ raise_proc = lambda { raise '' }
+ ensure_proc = lambda { |x| foo = x }
+ @s.rb_ensure(raise_proc, nil, ensure_proc, :foo) rescue nil
+ foo.should == :foo
+ end
+
+ it "raises the same exception raised inside passed function" do
+ raise_proc = lambda { |*_| raise RuntimeError, 'foo' }
+ proc = lambda { |*_| }
+ lambda { @s.rb_ensure(raise_proc, nil, proc, nil) }.should raise_error(RuntimeError, 'foo')
+ end
+ end
+
+ describe "rb_eval_string" do
+ it "evaluates a string of ruby code" do
+ @s.rb_eval_string("1+1").should == 2
+ end
+ end
+
+ describe "rb_block_proc" do
+ it "converts the implicit block into a proc" do
+ proc = @s.rb_block_proc() { 1+1 }
+ proc.should be_kind_of(Proc)
+ proc.call.should == 2
+ end
+ end
+
+ describe "rb_exec_recursive" do
+ it "detects recursive invocations of a method and indicates as such" do
+ s = "hello"
+ @s.rb_exec_recursive(s).should == s
+ end
+ end
+
+ describe "rb_set_end_proc" do
+ before :each do
+ @r, @w = IO.pipe
+ end
+
+ after :each do
+ @r.close
+ @w.close
+ Process.wait @pid
+ end
+
+ it "runs a C function on shutdown" do
+ @pid = fork {
+ @s.rb_set_end_proc(@w)
+ }
+
+ @r.read(1).should == "e"
+ end
+ end
+
+ describe "rb_f_sprintf" do
+ it "returns a string according to format and arguments" do
+ @s.rb_f_sprintf(["%d %f %s", 10, 2.5, "test"]).should == "10 2.500000 test"
+ end
+ end
+
+ describe "rb_make_backtrace" do
+ it "returns a caller backtrace" do
+ backtrace = @s.rb_make_backtrace
+ lines = backtrace.select {|l| l =~ /#{__FILE__}/ }
+ lines.should_not be_empty
+ end
+ end
+
+ describe "rb_obj_method" do
+ it "returns the method object for a symbol" do
+ method = @s.rb_obj_method("test", :size)
+ method.owner.should == String
+ method.name.to_sym.should == :size
+ end
+
+ it "returns the method object for a string" do
+ method = @s.rb_obj_method("test", "size")
+ method.owner.should == String
+ method.name.to_sym.should == :size
+ end
+ end
+
+ describe "rb_funcall3" do
+ before :each do
+ @obj = Object.new
+ class << @obj
+ def method_public; :method_public end
+ def method_private; :method_private end
+ private :method_private
+ end
+ end
+
+ it "calls a public method" do
+ @s.rb_funcall3(@obj, :method_public).should == :method_public
+ end
+ it "does not call a private method" do
+ lambda { @s.rb_funcall3(@obj, :method_private) }.should raise_error(NoMethodError, /private/)
+ end
+ end
+
+ describe 'rb_funcall_with_block' do
+ before :each do
+ @obj = Object.new
+ class << @obj
+ def method_public; yield end
+ def method_private; yield end
+ private :method_private
+ end
+ end
+
+ it "calls a method with block" do
+ @s.rb_funcall_with_block(@obj, :method_public, proc { :result }).should == :result
+ end
+
+ it "does not call a private method" do
+ lambda { @s.rb_funcall_with_block(@obj, :method_private, proc { :result }) }.should raise_error(NoMethodError, /private/)
+ end
+ end
+end
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