5 files changed, 106 insertions, 0 deletions
diff --git a/ext/-test-/integer/core_ext.c b/ext/-test-/integer/core_ext.c
new file mode 100644
index 0000000000..510ba4a1e6
--- /dev/null
+++ b/ext/-test-/integer/core_ext.c
@@ -0,0 +1,36 @@
+#include "internal.h"
+
+static VALUE
+int_bignum_p(VALUE self)
+{
+    return RB_TYPE_P(self, T_BIGNUM) ? Qtrue : Qfalse;
+}
+
+static VALUE
+int_fixnum_p(VALUE self)
+{
+    return FIXNUM_P(self) ? Qtrue : Qfalse;
+}
+
+static VALUE
+rb_int_to_bignum(VALUE x)
+{
+    if (FIXNUM_P(x))
+        x = rb_int2big(FIX2LONG(x));
+    return x;
+}
+
+static VALUE
+positive_pow(VALUE x, VALUE y)
+{
+    return rb_int_positive_pow(NUM2LONG(x), NUM2ULONG(y));
+}
+
+void
+Init_core_ext(VALUE klass)
+{
+    rb_define_method(rb_cInteger, "bignum?", int_bignum_p, 0);
+    rb_define_method(rb_cInteger, "fixnum?", int_fixnum_p, 0);
+    rb_define_method(rb_cInteger, "to_bignum", rb_int_to_bignum, 0);
+    rb_define_method(rb_cInteger, "positive_pow", positive_pow, 1);
+}
diff --git a/ext/-test-/integer/depend b/ext/-test-/integer/depend
new file mode 100644
index 0000000000..48f04d9ca0
--- /dev/null
+++ b/ext/-test-/integer/depend
@@ -0,0 +1,40 @@
+# AUTOGENERATED DEPENDENCIES START
+core_ext.o: $(RUBY_EXTCONF_H)
+core_ext.o: $(arch_hdrdir)/ruby/config.h
+core_ext.o: $(hdrdir)/ruby/backward.h
+core_ext.o: $(hdrdir)/ruby/defines.h
+core_ext.o: $(hdrdir)/ruby/encoding.h
+core_ext.o: $(hdrdir)/ruby/intern.h
+core_ext.o: $(hdrdir)/ruby/io.h
+core_ext.o: $(hdrdir)/ruby/missing.h
+core_ext.o: $(hdrdir)/ruby/onigmo.h
+core_ext.o: $(hdrdir)/ruby/oniguruma.h
+core_ext.o: $(hdrdir)/ruby/ruby.h
+core_ext.o: $(hdrdir)/ruby/st.h
+core_ext.o: $(hdrdir)/ruby/subst.h
+core_ext.o: $(top_srcdir)/include/ruby.h
+core_ext.o: $(top_srcdir)/internal.h
+core_ext.o: core_ext.c
+init.o: $(RUBY_EXTCONF_H)
+init.o: $(arch_hdrdir)/ruby/config.h
+init.o: $(hdrdir)/ruby/backward.h
+init.o: $(hdrdir)/ruby/defines.h
+init.o: $(hdrdir)/ruby/intern.h
+init.o: $(hdrdir)/ruby/missing.h
+init.o: $(hdrdir)/ruby/ruby.h
+init.o: $(hdrdir)/ruby/st.h
+init.o: $(hdrdir)/ruby/subst.h
+init.o: $(top_srcdir)/include/ruby.h
+init.o: init.c
+my_integer.o: $(RUBY_EXTCONF_H)
+my_integer.o: $(arch_hdrdir)/ruby/config.h
+my_integer.o: $(hdrdir)/ruby/backward.h
+my_integer.o: $(hdrdir)/ruby/defines.h
+my_integer.o: $(hdrdir)/ruby/intern.h
+my_integer.o: $(hdrdir)/ruby/missing.h
+my_integer.o: $(hdrdir)/ruby/ruby.h
+my_integer.o: $(hdrdir)/ruby/st.h
+my_integer.o: $(hdrdir)/ruby/subst.h
+my_integer.o: $(top_srcdir)/include/ruby.h
+my_integer.o: my_integer.c
+# AUTOGENERATED DEPENDENCIES END
diff --git a/ext/-test-/integer/extconf.rb b/ext/-test-/integer/extconf.rb
new file mode 100644
index 0000000000..d786b15db9
--- /dev/null
+++ b/ext/-test-/integer/extconf.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: false
+require_relative "../auto_ext.rb"
+auto_ext(inc: true)
diff --git a/ext/-test-/integer/init.c b/ext/-test-/integer/init.c
new file mode 100644
index 0000000000..fc256ea16b
--- /dev/null
+++ b/ext/-test-/integer/init.c
@@ -0,0 +1,11 @@
+#include "ruby.h"
+
+#define init(n) {void Init_##n(VALUE klass); Init_##n(klass);}
+
+void
+Init_integer(void)
+{
+    VALUE mBug = rb_define_module("Bug");
+    VALUE klass = rb_define_class_under(mBug, "Integer", rb_cObject);
+    TEST_INIT_FUNCS(init);
+}
diff --git a/ext/-test-/integer/my_integer.c b/ext/-test-/integer/my_integer.c
new file mode 100644
index 0000000000..d86474bd7d
--- /dev/null
+++ b/ext/-test-/integer/my_integer.c
@@ -0,0 +1,16 @@
+#include "ruby.h"
+
+static VALUE
+my_integer_s_new(VALUE klass)
+{
+    return Data_Wrap_Struct(klass, 0, 0, 0);
+}
+
+void
+Init_my_integer(VALUE klass)
+{
+    VALUE cMyInteger;
+
+    cMyInteger = rb_define_class_under(klass, "MyInteger", rb_cInteger);
+    rb_define_singleton_method(cMyInteger, "new", my_integer_s_new, 0);
+}