fix: map int types to number OAS type

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

src/Microsoft.OpenApi/Extensions/OpenApiTypeMapper.cs

@@ -57,8 +57,8 @@ public static class OpenApiTypeMapper
         /// Other types including nullables and URL are also supported.
         /// Common Name      type    format      Comments
         /// ===========      ======= ======      =========================================
-        /// integer          integer int32       signed 32 bits
-        /// long             integer int64       signed 64 bits
+        /// integer          number  int32       signed 32 bits
+        /// long             number  int64       signed 64 bits
         /// float            number  float
         /// double           number  double
         /// string           string  [empty]

src/Microsoft.OpenApi/Validations/Rules/RuleHelpers.cs

@@ -196,7 +196,7 @@ public static void ValidateDataTypeMismatch(
 
             if (type == "number")
             {
-                if (value is not OpenApiDouble)
+                if (value is not OpenApiDouble or OpenApiInteger or OpenApiFloat or OpenApiLong)
                 {
                     context.CreateWarning(
                         ruleName,