mkmf.rb: try_constant tests

* test/mkmf/test_constant.rb: tests for try_constant.
  TODO: define check_constant and use it.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38906 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Jan 23 16:16:14 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/mkmf/test_constant.rb: tests for try_constant.
+	  TODO: define check_constant and use it.
+
 Wed Jan 23 13:35:37 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* thread_pthread.c (ruby_init_stack): ignore `STACK_END_ADDRESS'

test/mkmf/test_constant.rb

@@ -0,0 +1,18 @@
+require_relative 'base'
+
+class TestMkmf
+  class TestTryConstant < TestMkmf
+    def test_simple
+      assert_equal( 0, mkmf {try_constant("0")}, MKMFLOG)
+      assert_equal( 1, mkmf {try_constant("1")}, MKMFLOG)
+      assert_equal(-1, mkmf {try_constant("-1")}, MKMFLOG)
+    end
+
+    def test_sizeof
+      assert_equal(config_value("SIZEOF_INT").to_i, mkmf {try_constant("sizeof(int)")}, MKMFLOG)
+      assert_equal(config_value("SIZEOF_LONG").to_i, mkmf {try_constant("sizeof(long)")}, MKMFLOG)
+      assert_equal(config_value("SIZEOF_VOIDP").to_i, mkmf {try_constant("sizeof(void*)")}, MKMFLOG)
+      assert_equal(config_value("SIZEOF_VALUE").to_i, mkmf {try_constant("sizeof(Qnil)")}, MKMFLOG)
+    end
+  end
+end