Run mrbgem and core tests on minimum dependencies.

Solves #2355.

In test drivers:
* Uses `mrb_t_pass_result` to check and pass test result to main `mrb_state`.
* Adds `mrb_init_test_driver` to init test `mrb_state`.

9 files changed, 130 insertions, 112 deletions

diff --git a/mrbgems/mruby-enumerator/mrbgem.rake b/mrbgems/mruby-enumerator/mrbgem.rake
index abcc54e7a..8757a15ea 100644
--- a/mrbgems/mruby-enumerator/mrbgem.rake
+++ b/mrbgems/mruby-enumerator/mrbgem.rake
@@ -2,5 +2,6 @@ MRuby::Gem::Specification.new('mruby-enumerator') do |spec|
   spec.license = 'MIT'
   spec.author  = 'mruby developers'
   spec.add_dependency('mruby-fiber', :core => 'mruby-fiber')
+  spec.add_dependency 'mruby-enum-ext', :core => 'mruby-enum-ext'
   spec.summary = 'Enumerator class'
 end
diff --git a/mrbgems/mruby-hash-ext/mrbgem.rake b/mrbgems/mruby-hash-ext/mrbgem.rake
index e1ce8e767..663de2166 100644
--- a/mrbgems/mruby-hash-ext/mrbgem.rake
+++ b/mrbgems/mruby-hash-ext/mrbgem.rake
@@ -2,4 +2,6 @@ MRuby::Gem::Specification.new('mruby-hash-ext') do |spec|
   spec.license = 'MIT'
   spec.author  = 'mruby developers'
   spec.summary = 'extensional Hash class'
+  spec.add_dependency 'mruby-enum-ext', :core => 'mruby-enum-ext'
+  spec.add_dependency 'mruby-array-ext', :core => 'mruby-array-ext'
 end
diff --git a/mrbgems/mruby-numeric-ext/test/numeric.rb b/mrbgems/mruby-numeric-ext/test/numeric.rb
index 4d9e83113..96644da69 100644
--- a/mrbgems/mruby-numeric-ext/test/numeric.rb
+++ b/mrbgems/mruby-numeric-ext/test/numeric.rb
@@ -5,13 +5,8 @@ assert('Integer#chr') do
   assert_equal("A", 65.chr)
   assert_equal("B", 0x42.chr)
 
-  if "こんにちわ世界".size == 7 then
-      # UTF-8 gem is configured
-      assert_raise(RangeError) { 0x110000.chr }
-  else
-      # multibyte encoding (not support yet)
-      assert_raise(RangeError) { 256.chr }
-  end
+  # multibyte encoding (not support yet)
+  assert_raise(RangeError) { 256.chr }
 end
 
 assert('Integer#div') do
diff --git a/tasks/mrbgem_spec.rake b/tasks/mrbgem_spec.rake
index 2a15a1f46..9e461d42b 100644
--- a/tasks/mrbgem_spec.rake
+++ b/tasks/mrbgem_spec.rake
@@ -45,10 +45,6 @@ module MRuby
         MRuby::Gem.current = self
       end
 
-      def run_test_in_other_mrb_state?
-        not test_preload.nil? or not test_objs.empty? or not test_args.empty?
-      end
-
       def setup
         MRuby::Gem.current = self
         MRuby::Build::COMMANDS.each do |command|
@@ -184,13 +180,15 @@ module MRuby
         print_gem_comment(f)
         f.puts %Q[#include <stdlib.h>]
         f.puts %Q[#include "mruby.h"]
-        f.puts %Q[#include "mruby/array.h"]
         f.puts %Q[#include "mruby/irep.h"]
-        f.puts %Q[#include "mruby/string.h"]
         f.puts %Q[#include "mruby/variable.h"]
         f.puts %Q[#include "mruby/hash.h"] unless test_args.empty?
       end
 
+      def test_dependencies
+        [@name]
+      end
+
       def version_ok?(req_versions)
         req_versions.map do |req|
           cmp, ver = req.split
@@ -290,7 +288,7 @@ module MRuby
         @ary.empty?
       end
 
-      def check(build)
+      def generate_gem_table
         gem_table = @ary.reduce({}) { |res,v| res[v.name] = v; res }
 
         default_gems = []
@@ -335,9 +333,29 @@ module MRuby
           fail "Conflicts of gem `#{g.name}` found: #{cfls.join ', '}" unless cfls.empty?
         end
 
-        class << gem_table
+        gem_table
+      end
+
+      def tsort_dependencies ary, table, all_dependency_listed = false
+        unless all_dependency_listed
+          left = ary.dup
+          until left.empty?
+            v = left.pop
+            table[v].dependencies.each do |dep|
+              left.push dep[:gem]
+              ary.push dep[:gem]
+            end
+          end
+        end
+
+        ary.uniq!
+        table.instance_variable_set :@root_gems, ary
+        class << table
           include TSort
-          alias tsort_each_node each_key
+          def tsort_each_node &b
+            @root_gems.each &b
+          end
+
           def tsort_each_child(n, &b)
             fetch(n).dependencies.each do |v|
               b.call v[:gem]
@@ -346,10 +364,16 @@ module MRuby
         end
 
         begin
-          @ary = gem_table.tsort.map { |v| gem_table[v] }
+          table.tsort.map { |v| table[v] }
         rescue TSort::Cyclic => e
           fail "Circular mrbgem dependency found: #{e.message}"
         end
+      end
+
+      def check(build)
+        gem_table = generate_gem_table
+
+        @ary = tsort_dependencies gem_table.keys, gem_table, true
 
         each do |g|
           import_include_paths(g)
diff --git a/tasks/mrbgems_test.rake b/tasks/mrbgems_test.rake
index 2fdf5f171..9fc9a9d2a 100644
--- a/tasks/mrbgems_test.rake
+++ b/tasks/mrbgems_test.rake
@@ -1,16 +1,12 @@
 MRuby.each_target do
-  no_mrb_open_test_gem = []
+  gem_table = gems.generate_gem_table
 
   gems.each do |g|
-    unless g.run_test_in_other_mrb_state?
-      no_mrb_open_test_gem << g
-      next
-    end
-
     test_rbobj = g.test_rbireps.ext(exts.object)
+    dep_list = gems.tsort_dependencies g.test_dependencies, gem_table
 
     file test_rbobj => g.test_rbireps
-    file g.test_rbireps => [g.test_rbfiles].flatten + [g.build.mrbcfile, __FILE__] do |t|
+    file g.test_rbireps => [g.test_rbfiles].flatten + [File.join(g.dir, 'mrbgem.rake'), g.build.mrbcfile, __FILE__, "#{MRUBY_ROOT}/tasks/mrbgem_spec.rake"] do |t|
       open(t.name, 'w') do |f|
         g.print_gem_test_header(f)
         test_preload = g.test_preload and [g.dir, MRUBY_ROOT].map {|dir|
@@ -33,21 +29,32 @@ MRuby.each_target do
           g.build.mrbc.run f, rbfile, "gem_test_irep_#{g.funcname}_#{i}"
         end
         f.puts %Q[void mrb_#{g.funcname}_gem_test(mrb_state *mrb);] unless g.test_objs.empty?
+        dep_list.each do |d|
+          f.puts %Q[void GENERATED_TMP_mrb_#{d.funcname}_gem_init(mrb_state *mrb);]
+          f.puts %Q[void GENERATED_TMP_mrb_#{d.funcname}_gem_final(mrb_state *mrb);]
+        end
+        f.puts %Q[void mrb_init_test_driver(mrb_state *mrb);]
+        f.puts %Q[void mrb_t_pass_result(mrb_state *dst, mrb_state *src);]
         f.puts %Q[void GENERATED_TMP_mrb_#{g.funcname}_gem_test(mrb_state *mrb) {]
         unless g.test_rbfiles.empty?
           f.puts %Q[  mrb_state *mrb2;]
           if g.test_args.empty?
-            f.puts %Q[  mrb_value val1, val2, val3, ary1, ary2;]
+            f.puts %Q[  mrb_value verbose;]
           else
-            f.puts %Q[  mrb_value val1, val2, val3, ary1, ary2, test_args_hash;]
+            f.puts %Q[  mrb_value verbose, test_args_hash;]
           end
           f.puts %Q[  int ai;]
           g.test_rbfiles.count.times do |i|
             f.puts %Q[  ai = mrb_gc_arena_save(mrb);]
-            f.puts %Q[  mrb2 = mrb_open();]
-            f.puts %Q[  val3 = mrb_gv_get(mrb, mrb_intern_lit(mrb, "$mrbtest_verbose"));]
-            f.puts %Q[  if (mrb_test(val3)) {]
-            f.puts %Q[    mrb_gv_set(mrb2, mrb_intern_lit(mrb2, "$mrbtest_verbose"), val3);]
+            f.puts %Q[  mrb2 = mrb_open_core(mrb_default_allocf, NULL);]
+            dep_list.each do |d|
+              f.puts %Q[  GENERATED_TMP_mrb_#{d.funcname}_gem_init(mrb2);]
+              f.puts %Q[  mrb_state_atexit(mrb2, GENERATED_TMP_mrb_#{d.funcname}_gem_final);]
+            end
+            f.puts %Q[  mrb_init_test_driver(mrb2);]
+            f.puts %Q[  verbose = mrb_gv_get(mrb, mrb_intern_lit(mrb, "$mrbtest_verbose"));]
+            f.puts %Q[  if (mrb_test(verbose)) {]
+            f.puts %Q[    mrb_gv_set(mrb2, mrb_intern_lit(mrb2, "$mrbtest_verbose"), verbose);]
             f.puts %Q[  }]
             if test_preload.nil?
               f.puts %Q[  mrb_load_irep(mrb2, mrbtest_assert_irep);]
@@ -73,30 +80,9 @@ MRuby.each_target do
             f.puts %Q[  mrb_#{g.funcname}_gem_test(mrb2);] unless g.test_objs.empty?
 
             f.puts %Q[  mrb_load_irep(mrb2, gem_test_irep_#{g.funcname}_#{i});]
-            f.puts %Q[  if (mrb2->exc) {]
-            f.puts %Q[    mrb_print_error(mrb2);]
-            f.puts %Q[    exit(EXIT_FAILURE);]
-            f.puts %Q[  }]
             f.puts %Q[  ]
 
-            %w(ok_test ko_test kill_test).each do |vname|
-              f.puts %Q[  val2 = mrb_gv_get(mrb2, mrb_intern_lit(mrb2, "$#{vname}"));]
-              f.puts %Q[  if (mrb_fixnum_p(val2)) {]
-              f.puts %Q[    val1 = mrb_gv_get(mrb, mrb_intern_lit(mrb, "$#{vname}"));]
-              f.puts %Q[    mrb_gv_set(mrb, mrb_intern_lit(mrb, "$#{vname}"), mrb_fixnum_value(mrb_fixnum(val1) + mrb_fixnum(val2)));]
-              f.puts %Q[  }\n]
-            end
-
-            f.puts %Q[  ary2 = mrb_gv_get(mrb2, mrb_intern_lit(mrb2, "$asserts"));]
-            f.puts %Q[  if (mrb_test(ary2)) {]
-            f.puts %Q[    ary1 = mrb_gv_get(mrb, mrb_intern_lit(mrb, "$asserts"));]
-            f.puts %Q[    val2 = mrb_ary_shift(mrb2, ary2);]
-            f.puts %Q[    ]
-            f.puts %Q[    while (mrb_test(val2)) {]
-            f.puts %Q[      mrb_ary_push(mrb, ary1, mrb_str_new(mrb, RSTRING_PTR(val2), RSTRING_LEN(val2)));]
-            f.puts %Q[      val2 = mrb_ary_shift(mrb2, ary2);]
-            f.puts %Q[    }]
-            f.puts %Q[  }]
+            f.puts %Q[  mrb_t_pass_result(mrb, mrb2);]
             f.puts %Q[  mrb_close(mrb2);]
             f.puts %Q[  mrb_gc_arena_restore(mrb, ai);]
           end
@@ -104,44 +90,5 @@ MRuby.each_target do
         f.puts %Q[}]
       end
     end
-
-  end
-
-  no_mrb_open_test = "#{build_dir}/test/no_mrb_open_test"
-  no_mrb_open_test_rbfiles = no_mrb_open_test_gem.reduce([]) { |res, v|
-    res += v.test_rbfiles
-  }
-  if no_mrb_open_test_rbfiles.empty?
-    no_mrb_open_test_rbfiles << "#{MRUBY_ROOT}/test/no_mrb_open_test_dummy.rb"
-  end
-
-  no_mrb_open_test_lib = no_mrb_open_test.ext(exts.object)
-  file no_mrb_open_test_lib => "#{no_mrb_open_test}.c"
-  file "#{no_mrb_open_test}.c" => no_mrb_open_test_rbfiles + [MRUBY_CONFIG, __FILE__] do |t|
-    open(t.name, 'w') do |f|
-      f.puts %Q[/*]
-      f.puts %Q[ * This file contains a test code for following gems:]
-      no_mrb_open_test_gem.each { |g| f.puts %Q[ *   #{g.name}] }
-      f.puts %Q[ *]
-      f.puts %Q[ * IMPORTANT:]
-      f.puts %Q[ *   This file was generated!]
-      f.puts %Q[ *   All manual changes will get lost.]
-      f.puts %Q[ */]
-
-      f.puts %Q[]
-
-      f.puts %Q[\#include "mruby.h"]
-      f.puts %Q[\#include "mruby/irep.h"]
-
-      f.puts %Q[]
-
-      mrbc.run f, no_mrb_open_test_rbfiles, "no_mrb_open_gem_test_irep"
-
-      f.puts %Q[]
-
-      f.puts %Q[void no_mrb_open_mrbgem_test(mrb_state *mrb) {]
-      f.puts %Q[  mrb_load_irep(mrb, no_mrb_open_gem_test_irep);]
-      f.puts %Q[}]
-    end
   end
 end
diff --git a/test/driver.c b/test/driver.c
index 7fd8ef720..c696262bf 100644
--- a/test/driver.c
+++ b/test/driver.c
@@ -16,6 +16,7 @@
 #include "mruby/compile.h"
 #include "mruby/string.h"
 #include "mruby/variable.h"
+#include "mruby/array.h"
 
 void
 mrb_init_mrbtest(mrb_state *);
@@ -81,12 +82,62 @@ mrb_t_printstr(mrb_state *mrb, mrb_value self)
   return argv;
 }
 
+void
+mrb_init_test_driver(mrb_state *mrb)
+{
+  struct RClass *krn, *mrbtest;
+
+  krn = mrb->kernel_module;
+  mrb_define_method(mrb, krn, "__t_printstr__", mrb_t_printstr, MRB_ARGS_REQ(1));
+
+  mrbtest = mrb_define_module(mrb, "Mrbtest");
+
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MAX", mrb_fixnum_value(MRB_INT_MAX));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MIN", mrb_fixnum_value(MRB_INT_MIN));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_BIT", mrb_fixnum_value(MRB_INT_BIT));
+}
+
+void
+mrb_t_pass_result(mrb_state *mrb_dst, mrb_state *mrb_src)
+{
+  mrb_value res_src;
+
+  if (mrb_src->exc) {
+    mrb_print_error(mrb_src);
+    exit(EXIT_FAILURE);
+  }
+
+#define TEST_COUNT_PASS(name)                                           \
+  do {                                                                  \
+    res_src = mrb_gv_get(mrb_src, mrb_intern_lit(mrb_src, "$" #name));  \
+    if (mrb_fixnum_p(res_src)) {                                        \
+      mrb_value res_dst = mrb_gv_get(mrb_dst, mrb_intern_lit(mrb_dst, "$" #name)); \
+      mrb_gv_set(mrb_dst, mrb_intern_lit(mrb_dst, "$" #name), mrb_fixnum_value(mrb_fixnum(res_dst) + mrb_fixnum(res_src))); \
+    }                                                                   \
+  } while (FALSE)                                                       \
+
+  TEST_COUNT_PASS(ok_test);
+  TEST_COUNT_PASS(ko_test);
+  TEST_COUNT_PASS(kill_test);
+
+#undef TEST_COUNT_PASS
+
+  res_src = mrb_gv_get(mrb_src, mrb_intern_lit(mrb_src, "$asserts"));
+
+  if (mrb_array_p(res_src)) {
+    mrb_int i;
+    mrb_value res_dst = mrb_gv_get(mrb_dst, mrb_intern_lit(mrb_dst, "$asserts"));
+    for (i = 0; i < RARRAY_LEN(res_src); ++i) {
+      mrb_value val_src = RARRAY_PTR(res_src)[i];
+      mrb_ary_push(mrb_dst, res_dst, mrb_str_new(mrb_dst, RSTRING_PTR(val_src), RSTRING_LEN(val_src)));
+    }
+  }
+}
+
 int
 main(int argc, char **argv)
 {
   mrb_state *mrb;
-  struct RClass *krn;
-  struct RClass *mrbtest;
   int ret;
 
   print_hint();
@@ -103,15 +154,7 @@ main(int argc, char **argv)
     mrb_gv_set(mrb, mrb_intern_lit(mrb, "$mrbtest_verbose"), mrb_true_value());
   }
 
-  krn = mrb->kernel_module;
-  mrb_define_method(mrb, krn, "__t_printstr__", mrb_t_printstr, MRB_ARGS_REQ(1));
-
-  mrbtest = mrb_define_module(mrb, "Mrbtest");
-
-  mrb_define_const(mrb, mrbtest, "FIXNUM_MAX", mrb_fixnum_value(MRB_INT_MAX));
-  mrb_define_const(mrb, mrbtest, "FIXNUM_MIN", mrb_fixnum_value(MRB_INT_MIN));
-  mrb_define_const(mrb, mrbtest, "FIXNUM_BIT", mrb_fixnum_value(MRB_INT_BIT));
-
+  mrb_init_test_driver(mrb);
   mrb_init_mrbtest(mrb);
   ret = eval_test(mrb);
   mrb_close(mrb);
diff --git a/test/init_mrbtest.c b/test/init_mrbtest.c
index 3ce42f661..3a61a6f39 100644
--- a/test/init_mrbtest.c
+++ b/test/init_mrbtest.c
@@ -6,15 +6,26 @@ extern const uint8_t mrbtest_assert_irep[];
 extern const uint8_t mrbtest_irep[];
 
 void mrbgemtest_init(mrb_state* mrb);
+void mrb_init_test_driver(mrb_state* mrb);
+void mrb_t_pass_result(mrb_state *mrb_dst, mrb_state *mrb_src);
 
 void
 mrb_init_mrbtest(mrb_state *mrb)
 {
+  mrb_state *core_test;
+
   mrb_load_irep(mrb, mrbtest_assert_irep);
-  mrb_load_irep(mrb, mrbtest_irep);
+
+  core_test = mrb_open_core(mrb_default_allocf, NULL);
+  mrb_init_test_driver(core_test);
+  mrb_load_irep(core_test, mrbtest_assert_irep);
+  mrb_load_irep(core_test, mrbtest_irep);
+  mrb_t_pass_result(mrb, core_test);
+
 #ifndef DISABLE_GEMS
   mrbgemtest_init(mrb);
 #endif
+
   if (mrb->exc) {
     mrb_print_error(mrb);
     exit(EXIT_FAILURE);
diff --git a/test/mrbtest.rake b/test/mrbtest.rake
index c28cf3577..21afad946 100644
--- a/test/mrbtest.rake
+++ b/test/mrbtest.rake
@@ -12,11 +12,12 @@ MRuby.each_target do
   ass_lib = ass_c.ext(exts.object)
 
   mrbtest_lib = libfile("#{current_build_dir}/mrbtest")
-  gem_test_files = gems.select { |g| g.run_test_in_other_mrb_state? }.map { |g| g.test_rbireps.ext(exts.object) }
-  file mrbtest_lib => [mlib, ass_lib, gems.map(&:test_objs), gem_test_files].flatten do |t|
+  mrbtest_objs = gems.map do |v|
+    v.test_objs + [v.test_rbireps.ext(exts.object)]
+  end
+  file mrbtest_lib => [mlib, ass_lib] + mrbtest_objs do |t|
     archiver.run t.name, t.prerequisites
   end
-  file mrbtest_lib => "#{build_dir}/test/no_mrb_open_test.c".ext(exts.object)
 
   unless build_mrbtest_lib_only?
     driver_obj = objfile("#{current_build_dir}/driver")
@@ -55,16 +56,12 @@ MRuby.each_target do
       f.puts IO.read(init)
       mrbc.run f, mrbs, 'mrbtest_irep'
       gems.each do |g|
-        next unless g.run_test_in_other_mrb_state?
         f.puts %Q[void GENERATED_TMP_mrb_#{g.funcname}_gem_test(mrb_state *mrb);]
       end
-      f.puts %Q[void no_mrb_open_mrbgem_test(mrb_state *mrb);]
       f.puts %Q[void mrbgemtest_init(mrb_state* mrb) {]
       gems.each do |g|
-        next unless g.run_test_in_other_mrb_state?
         f.puts %Q[    GENERATED_TMP_mrb_#{g.funcname}_gem_test(mrb);]
       end
-      f.puts %Q[    no_mrb_open_mrbgem_test(mrb);]
       f.puts %Q[}]
     end
   end
diff --git a/test/no_mrb_open_test_dummy.rb b/test/no_mrb_open_test_dummy.rb
deleted file mode 100644
index 5181c0a45..000000000
--- a/test/no_mrb_open_test_dummy.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-#dummy
-