1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/library/rbconfig/sizeof/limits_spec.rb b/spec/ruby/library/rbconfig/sizeof/limits_spec.rb
new file mode 100644
index 0000000000..a026135eee
--- /dev/null
+++ b/spec/ruby/library/rbconfig/sizeof/limits_spec.rb
@@ -0,0 +1,42 @@
+require_relative '../../../spec_helper'
+require 'rbconfig/sizeof'
+
+ruby_version_is "2.5" do
+  describe "RbConfig::LIMITS" do
+    it "is a Hash" do
+      RbConfig::LIMITS.should be_kind_of(Hash)
+    end
+
+    it "has string keys and numeric values" do
+      RbConfig::LIMITS.each do |key, value|
+        key.should be_kind_of String
+        value.should be_kind_of Numeric
+      end
+    end
+
+    it "contains FIXNUM_MIN and FIXNUM_MAX" do
+      RbConfig::LIMITS["FIXNUM_MIN"].should < 0
+      RbConfig::LIMITS["FIXNUM_MAX"].should > 0
+    end
+
+    it "contains CHAR_MIN and CHAR_MAX" do
+      RbConfig::LIMITS["CHAR_MIN"].should <= 0
+      RbConfig::LIMITS["CHAR_MAX"].should > 0
+    end
+
+    it "contains SHRT_MIN and SHRT_MAX" do
+      RbConfig::LIMITS["SHRT_MIN"].should == -32768
+      RbConfig::LIMITS["SHRT_MAX"].should == 32767
+    end
+
+    it "contains INT_MIN and INT_MAX" do
+      RbConfig::LIMITS["INT_MIN"].should < 0
+      RbConfig::LIMITS["INT_MAX"].should > 0
+    end
+
+    it "contains LONG_MIN and LONG_MAX" do
+      RbConfig::LIMITS["LONG_MIN"].should < 0
+      RbConfig::LIMITS["LONG_MAX"].should > 0
+    end
+  end
+end