fix: allow injecting false default value (#47)

Author: spacewander

lib/jsonschema.lua

@@ -626,7 +626,7 @@ generate_validator = function(ctx, schema)
       end
       ctx:stmt(          '    end') -- if prop
 
-      if type(subschema) == "table" and subschema.default and
+      if type(subschema) == "table" and subschema.default ~= nil and
          (type(subschema.default) == "number" or
           type(subschema.default) == "string" or
           type(subschema.default) == "boolean" or
@@ -964,7 +964,7 @@ generate_validator = function(ctx, schema)
       end
     end
     ctx:stmt(') then')
-    ctx:stmt('  return false, "matches non of the enum values"')
+    ctx:stmt('  return false, "matches none of the enum values"')
     ctx:stmt('end')
   end
 

t/default.lua

@@ -133,3 +133,20 @@ local rule = {
 
 local validator = jsonschema.generate_validator(rule)
 assert(rule.id == "root:/", "fail: schema id is removed")
+
+----------------------------------------------------- test case 6
+local rule = {
+    type = "object",
+    properties = {
+        foo = {type = "boolean", default = false}
+    }
+}
+
+local validator = jsonschema.generate_validator(rule)
+local t = {}
+local ok, err = validator(t)
+if not ok then
+  ngx.say("fail: inject default false value: ", err)
+  return
+end
+assert(t.foo == false, "fail: inject default false value")