diff --git a/package.json b/package.json
index c4d344673..a7df610c9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "zenstack-monorepo",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "description": "",
     "scripts": {
         "build": "pnpm -r build",
diff --git a/packages/internal/package.json b/packages/internal/package.json
index 9ba9462d9..0014dbddf 100644
--- a/packages/internal/package.json
+++ b/packages/internal/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@zenstackhq/internal",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "displayName": "ZenStack Internal Library",
     "description": "ZenStack internal runtime library. This package is for supporting runtime functionality of ZenStack and not supposed to be used directly.",
     "repository": {
@@ -27,12 +27,13 @@
         "bcryptjs": "^2.4.3",
         "colors": "^1.4.0",
         "cuid": "^2.1.8",
+        "decimal.js": "^10.4.2",
         "deepcopy": "^2.1.0",
         "swr": "^1.3.0"
     },
     "peerDependencies": {
         "@prisma/client": "^4.4.0",
-        "next": "12.3.1",
+        "next": "^12.3.1",
         "react": "^17.0.2 || ^18",
         "react-dom": "^17.0.2 || ^18"
     },
diff --git a/packages/internal/src/handler/data/policy-utils.ts b/packages/internal/src/handler/data/policy-utils.ts
index 051c02f86..bcb015185 100644
--- a/packages/internal/src/handler/data/policy-utils.ts
+++ b/packages/internal/src/handler/data/policy-utils.ts
@@ -187,6 +187,40 @@ async function postProcessForRead(
         if (await shouldOmit(service, model, field)) {
             delete entityData[field];
         }
+
+        const fieldValue = entityData[field];
+
+        if (typeof fieldValue === 'bigint') {
+            // serialize BigInt with typing info
+            entityData[field] = {
+                type: 'BigInt',
+                data: fieldValue.toString(),
+            };
+        }
+
+        if (fieldValue instanceof Date) {
+            // serialize Date with typing info
+            entityData[field] = {
+                type: 'Date',
+                data: fieldValue.toISOString(),
+            };
+        }
+
+        if (typeof fieldValue === 'object') {
+            const fieldInfo = await service.resolveField(model, field);
+            if (fieldInfo?.type === 'Decimal') {
+                // serialize Decimal with typing info
+                entityData[field] = {
+                    type: 'Decimal',
+                    data: fieldValue.toString(),
+                };
+            } else if (fieldInfo?.type === 'Bytes') {
+                entityData[field] = {
+                    type: 'Bytes',
+                    data: Array.from(fieldValue as Buffer),
+                };
+            }
+        }
     }
 
     const injectTarget = args.select ?? args.include;
@@ -596,13 +630,11 @@ export async function preprocessWritePayload(
         fieldData: any,
         parentData: any
     ) => {
-        if (fieldInfo.type !== 'String') {
-            return true;
-        }
+        // process @password field
         const pwdAttr = fieldInfo.attributes?.find(
             (attr) => attr.name === '@password'
         );
-        if (pwdAttr) {
+        if (pwdAttr && fieldInfo.type !== 'String') {
             // hash password value
             let salt: string | number | undefined = pwdAttr.args.find(
                 (arg) => arg.name === 'salt'
@@ -616,6 +648,17 @@ export async function preprocessWritePayload(
             }
             parentData[fieldInfo.name] = hashSync(fieldData, salt);
         }
+
+        // deserialize Buffer field
+        if (fieldInfo.type === 'Bytes' && Array.isArray(fieldData.data)) {
+            parentData[fieldInfo.name] = Buffer.from(fieldData.data);
+        }
+
+        // deserialize BigInt field
+        if (fieldInfo.type === 'BigInt' && typeof fieldData === 'string') {
+            parentData[fieldInfo.name] = BigInt(fieldData);
+        }
+
         return true;
     };
 
diff --git a/packages/internal/src/request.ts b/packages/internal/src/request.ts
index 41ea2224a..59de775d0 100644
--- a/packages/internal/src/request.ts
+++ b/packages/internal/src/request.ts
@@ -1,3 +1,4 @@
+import Decimal from 'decimal.js';
 import useSWR, { useSWRConfig } from 'swr';
 import type {
     MutatorCallback,
@@ -5,6 +6,66 @@ import type {
     SWRResponse,
 } from 'swr/dist/types';
 
+type BufferShape = { type: 'Buffer'; data: number[] };
+function isBuffer(value: unknown): value is BufferShape {
+    return (
+        !!value &&
+        (value as BufferShape).type === 'Buffer' &&
+        Array.isArray((value as BufferShape).data)
+    );
+}
+
+type BigIntShape = { type: 'BigInt'; data: string };
+function isBigInt(value: unknown): value is BigIntShape {
+    return (
+        !!value &&
+        (value as BigIntShape).type === 'BigInt' &&
+        typeof (value as BigIntShape).data === 'string'
+    );
+}
+
+type DateShape = { type: 'Date'; data: string };
+function isDate(value: unknown): value is BigIntShape {
+    return (
+        !!value &&
+        (value as DateShape).type === 'Date' &&
+        typeof (value as DateShape).data === 'string'
+    );
+}
+
+type DecmalShape = { type: 'Decimal'; data: string };
+function isDecimal(value: unknown): value is DecmalShape {
+    return (
+        !!value &&
+        (value as DecmalShape).type === 'Decimal' &&
+        typeof (value as DateShape).data === 'string'
+    );
+}
+
+const dataReviver = (key: string, value: unknown) => {
+    // Buffer
+    if (isBuffer(value)) {
+        return Buffer.from(value.data);
+    }
+
+    // BigInt
+    if (isBigInt(value)) {
+        return BigInt(value.data);
+    }
+
+    // Date
+    if (isDate(value)) {
+        return new Date(value.data);
+    }
+
+    // Decimal
+    if (isDecimal(value)) {
+        return new Decimal(value.data);
+    }
+
+    return value;
+};
+
 const fetcher = async (url: string, options?: RequestInit) => {
     const res = await fetch(url, options);
     if (!res.ok) {
@@ -15,7 +76,15 @@ const fetcher = async (url: string, options?: RequestInit) => {
         error.status = res.status;
         throw error;
     }
-    return res.json();
+
+    const textResult = await res.text();
+    console.log;
+    try {
+        return JSON.parse(textResult, dataReviver);
+    } catch (err) {
+        console.error(`Unable to deserialize data:`, textResult);
+        throw err;
+    }
 };
 
 function makeUrl(url: string, args: unknown) {
diff --git a/packages/runtime/package.json b/packages/runtime/package.json
index f27c34861..bec0d68b1 100644
--- a/packages/runtime/package.json
+++ b/packages/runtime/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@zenstackhq/runtime",
     "displayName": "ZenStack Runtime Library",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "description": "This package contains runtime library for consuming client and server side code generated by ZenStack.",
     "repository": {
         "type": "git",
diff --git a/packages/schema/package.json b/packages/schema/package.json
index c104fa434..1af0273c5 100644
--- a/packages/schema/package.json
+++ b/packages/schema/package.json
@@ -3,7 +3,7 @@
     "publisher": "zenstack",
     "displayName": "ZenStack Language Tools",
     "description": "ZenStack is a toolkit that simplifies full-stack development",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "author": {
         "name": "ZenStack Team"
     },
diff --git a/packages/schema/src/res/stdlib.zmodel b/packages/schema/src/res/stdlib.zmodel
index ff248b199..c08141ba2 100644
--- a/packages/schema/src/res/stdlib.zmodel
+++ b/packages/schema/src/res/stdlib.zmodel
@@ -10,33 +10,33 @@ enum ReferentialAction {
 }
 
 /*
- * Reads value from an environment variable
+ * Reads value from an environment variable.
  */
 function env(name: String): String {}
 
 /*
- * Gets thec current login user
+ * Gets thec current login user.
  */
 function auth(): Any {}
 
 /*
- * Gets current date-time (as DateTime type)
+ * Gets current date-time (as DateTime type).
  */
 function now(): DateTime {}
 
 /*
- * Generate a globally unique identifier based on the UUID spec
+ * Generates a globally unique identifier based on the UUID specs.
  */
 function uuid(): String {}
 
 /*
- * Generate a globally unique identifier based on the CUID spec
+ * Generates a globally unique identifier based on the CUID spec.
  */
 function cuid(): String {}
 
 /*
- * Create a sequence of integers in the underlying database and assign the incremented 
- * values to the ID values of the created records based on the sequence
+ * Creates a sequence of integers in the underlying database and assign the incremented 
+ * values to the ID values of the created records based on the sequence.
  */
 function autoincrement(): Int {}
 
@@ -46,57 +46,57 @@ function autoincrement(): Int {}
 function dbgenerated(expr: String): Any {}
 
 /*
- * Defines an ID on the model
+ * Defines an ID on the model.
  */
 attribute @id(map: String?)
 
 /*
- * Defines a default value for a field
+ * Defines a default value for a field.
  */
 attribute @default(_ value: ContextType)
 
 /*
- * Defines a unique constraint for this field
+ * Defines a unique constraint for this field.
  */
 attribute @unique(map: String?)
 
 /*
- * Defines a compound unique constraint for the specified fields
+ * Defines a compound unique constraint for the specified fields.
  */
 attribute @@unique(_ fields: FieldReference[], name: String?, map: String?)
 
 /*
- * Defines an index in the database
+ * Defines an index in the database.
  */
 attribute @@index(_ fields: FieldReference[], map: String?)
 
 /*
- * Defines meta information about the relation
+ * Defines meta information about the relation.
  */
 attribute @relation(_ name: String?, fields: FieldReference[]?, references: FieldReference[]?, onDelete: ReferentialAction?, onUpdate: ReferentialAction?, map: String?)
 
 /*
- * Maps a field name or enum value from the schema to a column with a different name in the database
+ * Maps a field name or enum value from the schema to a column with a different name in the database.
  */
 attribute @map(_ name: String)
 
 /*
- * Maps the schema model name to a table with a different name, or an enum name to a different underlying enum in the database
+ * Maps the schema model name to a table with a different name, or an enum name to a different underlying enum in the database.
  */
 attribute @@map(_ name: String)
 
 /*
- * Automatically stores the time when a record was last updated
+ * Automatically stores the time when a record was last updated.
  */
 attribute @updatedAt()
 
 /*
- * Defines an access policy that allows a set of operations when the given condition is true
+ * Defines an access policy that allows a set of operations when the given condition is true.
  */
 attribute @@allow(_ operation: String, _ condition: Boolean)
 
 /*
- * Defines an access policy that denies a set of operations when the given condition is true
+ * Defines an access policy that denies a set of operations when the given condition is true.
  */
 attribute @@deny(_ operation: String, _ condition: Boolean)
 
@@ -113,6 +113,6 @@ attribute @@deny(_ operation: String, _ condition: Boolean)
 attribute @password(saltLength: Int?, salt: String?)
 
 /*
- * Indicates that the field should be omitted when read from the generated services
+ * Indicates that the field should be omitted when read from the generated services.
  */
 attribute @omit()
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d41794e3e..65c3a4d7d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -15,10 +15,11 @@ importers:
       bcryptjs: ^2.4.3
       colors: ^1.4.0
       cuid: ^2.1.8
+      decimal.js: ^10.4.2
       deepcopy: ^2.1.0
       eslint: ^8.27.0
       jest: ^29.0.3
-      next: 12.3.1
+      next: ^12.3.1
       react: ^17.0.2 || ^18
       react-dom: ^17.0.2 || ^18
       swr: ^1.3.0
@@ -31,8 +32,9 @@ importers:
       bcryptjs: 2.4.3
       colors: 1.4.0
       cuid: 2.1.8
+      decimal.js: 10.4.2
       deepcopy: 2.1.0
-      next: 12.3.1_qtpcxnaaarbm4ws7ughq6oxfve
+      next: 12.3.1_6tziyx3dehkoeijunclpkpolha
       react: 18.2.0
       react-dom: 18.2.0_react@18.2.0
       swr: 1.3.0_react@18.2.0
@@ -212,7 +214,6 @@ packages:
       semver: 6.3.0
     transitivePeerDependencies:
       - supports-color
-    dev: true
 
   /@babel/core/7.19.6:
     resolution: {integrity: sha512-D2Ue4KHpc6Ys2+AxpIx1BZ8+UegLLLE2p3KJEuJRKmokHOtl49jQ5ny1773KsGLZs8MQvBidAF6yWUJxRqtKtg==}
@@ -235,6 +236,7 @@ packages:
       semver: 6.3.0
     transitivePeerDependencies:
       - supports-color
+    dev: true
 
   /@babel/generator/7.19.5:
     resolution: {integrity: sha512-DxbNz9Lz4aMZ99qPpO1raTbcrI1ZeYh+9NR9qhfkQIbFtVEqotHojEBxHzmxhVONkGt6VyrqVQcgpefMy9pqcg==}
@@ -243,7 +245,6 @@ packages:
       '@babel/types': 7.19.4
       '@jridgewell/gen-mapping': 0.3.2
       jsesc: 2.5.2
-    dev: true
 
   /@babel/generator/7.19.6:
     resolution: {integrity: sha512-oHGRUQeoX1QrKeJIKVe0hwjGqNnVYsM5Nep5zo0uE0m42sLH+Fsd2pStJ5sRM1bNyTUUoz0pe2lTeMJrb/taTA==}
@@ -264,7 +265,6 @@ packages:
       '@babel/helper-validator-option': 7.18.6
       browserslist: 4.21.4
       semver: 6.3.0
-    dev: true
 
   /@babel/helper-compilation-targets/7.19.3_@babel+core@7.19.6:
     resolution: {integrity: sha512-65ESqLGyGmLvgR0mst5AdW1FkNlj9rQsCKduzEoEPhBCDFGXvz2jW6bXFG6i0/MrV2s7hhXjjb2yAzcPuQlLwg==}
@@ -277,6 +277,7 @@ packages:
       '@babel/helper-validator-option': 7.18.6
       browserslist: 4.21.4
       semver: 6.3.0
+    dev: true
 
   /@babel/helper-environment-visitor/7.18.9:
     resolution: {integrity: sha512-3r/aACDJ3fhQ/EVgFy0hpj8oHyHpQc+LPtJoY9SzTThAsStm4Ptegq92vqKoE3vD706ZVFWITnMnxucw+S9Ipg==}
@@ -315,7 +316,6 @@ packages:
       '@babel/types': 7.19.4
     transitivePeerDependencies:
       - supports-color
-    dev: true
 
   /@babel/helper-module-transforms/7.19.6:
     resolution: {integrity: sha512-fCmcfQo/KYr/VXXDIyd3CBGZ6AFhPFy1TfSEJ+PilGVlQT6jcbqtHAM4C1EciRqMza7/TpOUZliuSH+U6HAhJw==}
@@ -331,6 +331,7 @@ packages:
       '@babel/types': 7.19.4
     transitivePeerDependencies:
       - supports-color
+    dev: true
 
   /@babel/helper-plugin-utils/7.19.0:
     resolution: {integrity: sha512-40Ryx7I8mT+0gaNxm8JGTZFUITNqdLAgdg0hXzeVZxVD6nFsdhQvip6v8dqkRHzsz1VFpFAaOCHNn0vKBL7Czw==}
@@ -342,13 +343,13 @@ packages:
     engines: {node: '>=6.9.0'}
     dependencies:
       '@babel/types': 7.19.4
-    dev: true
 
   /@babel/helper-simple-access/7.19.4:
     resolution: {integrity: sha512-f9Xq6WqBFqaDfbCzn2w85hwklswz5qsKlh7f08w4Y9yhJHpnNC0QemtSkK5YyOY8kPGvyiwdzZksGUhnGdaUIg==}
     engines: {node: '>=6.9.0'}
     dependencies:
       '@babel/types': 7.19.4
+    dev: true
 
   /@babel/helper-split-export-declaration/7.18.6:
     resolution: {integrity: sha512-bde1etTx6ZyTmobl9LLMMQsaizFVZrquTEHOqKeQESMKo4PlObf+8+JA25ZsIpZhT/WEd39+vOdLXAFG/nELpA==}
@@ -392,7 +393,6 @@ packages:
     hasBin: true
     dependencies:
       '@babel/types': 7.19.4
-    dev: true
 
   /@babel/parser/7.19.6:
     resolution: {integrity: sha512-h1IUp81s2JYJ3mRkdxJgs4UvmSsRvDrx5ICSJbPvtWYv5i1nTBGcBpnog+89rAFMwvvru6E5NUHdBe01UeSzYA==}
@@ -683,7 +683,6 @@ packages:
       globals: 11.12.0
     transitivePeerDependencies:
       - supports-color
-    dev: true
 
   /@babel/traverse/7.19.6:
     resolution: {integrity: sha512-6l5HrUCzFM04mfbG09AagtYyR2P0B71B1wN7PfSPiksDPz2k5H9CBC1tcZpz2M8OxbKTPccByoOJ22rUKbpmQQ==}
@@ -2715,6 +2714,10 @@ packages:
     dependencies:
       ms: 2.1.2
 
+  /decimal.js/10.4.2:
+    resolution: {integrity: sha512-ic1yEvwT6GuvaYwBLLY6/aFFgjZdySKTE8en/fkU3QICTmRtgtSlFn0u0BXN06InZwtfCelR7j8LRiDI/02iGA==}
+    dev: false
+
   /decompress-response/6.0.0:
     resolution: {integrity: sha512-aW35yZM6Bb/4oJlZncMH2LCoZtJXTRxES17vE3hoRiowU2kWHaJKFkSBDnDR+cm9J+9QhXmREyIfv0pji9ejCQ==}
     engines: {node: '>=10'}
@@ -5062,6 +5065,51 @@ packages:
     engines: {node: '>=10'}
     dev: true
 
+  /next/12.3.1_6tziyx3dehkoeijunclpkpolha:
+    resolution: {integrity: sha512-l7bvmSeIwX5lp07WtIiP9u2ytZMv7jIeB8iacR28PuUEFG5j0HGAPnMqyG5kbZNBG2H7tRsrQ4HCjuMOPnANZw==}
+    engines: {node: '>=12.22.0'}
+    hasBin: true
+    peerDependencies:
+      fibers: '>= 3.1.0'
+      node-sass: ^6.0.0 || ^7.0.0
+      react: ^17.0.2 || ^18.0.0-0
+      react-dom: ^17.0.2 || ^18.0.0-0
+      sass: ^1.3.0
+    peerDependenciesMeta:
+      fibers:
+        optional: true
+      node-sass:
+        optional: true
+      sass:
+        optional: true
+    dependencies:
+      '@next/env': 12.3.1
+      '@swc/helpers': 0.4.11
+      caniuse-lite: 1.0.30001409
+      postcss: 8.4.14
+      react: 18.2.0
+      react-dom: 18.2.0_react@18.2.0
+      styled-jsx: 5.0.7_b6k74wvxdvqypha4emuv7fd2ke
+      use-sync-external-store: 1.2.0_react@18.2.0
+    optionalDependencies:
+      '@next/swc-android-arm-eabi': 12.3.1
+      '@next/swc-android-arm64': 12.3.1
+      '@next/swc-darwin-arm64': 12.3.1
+      '@next/swc-darwin-x64': 12.3.1
+      '@next/swc-freebsd-x64': 12.3.1
+      '@next/swc-linux-arm-gnueabihf': 12.3.1
+      '@next/swc-linux-arm64-gnu': 12.3.1
+      '@next/swc-linux-arm64-musl': 12.3.1
+      '@next/swc-linux-x64-gnu': 12.3.1
+      '@next/swc-linux-x64-musl': 12.3.1
+      '@next/swc-win32-arm64-msvc': 12.3.1
+      '@next/swc-win32-ia32-msvc': 12.3.1
+      '@next/swc-win32-x64-msvc': 12.3.1
+    transitivePeerDependencies:
+      - '@babel/core'
+      - babel-plugin-macros
+    dev: false
+
   /next/12.3.1_qtpcxnaaarbm4ws7ughq6oxfve:
     resolution: {integrity: sha512-l7bvmSeIwX5lp07WtIiP9u2ytZMv7jIeB8iacR28PuUEFG5j0HGAPnMqyG5kbZNBG2H7tRsrQ4HCjuMOPnANZw==}
     engines: {node: '>=12.22.0'}
@@ -5105,6 +5153,7 @@ packages:
     transitivePeerDependencies:
       - '@babel/core'
       - babel-plugin-macros
+    dev: true
 
   /no-case/3.0.4:
     resolution: {integrity: sha512-fgAN3jGAh+RoxUGZHTSOLJIqUc2wmoBwGR4tbpNAKmmovFoWq0OdRkb0VkldReO2a2iBT/OEulG9XSUc10r3zg==}
@@ -5921,6 +5970,23 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
+  /styled-jsx/5.0.7_b6k74wvxdvqypha4emuv7fd2ke:
+    resolution: {integrity: sha512-b3sUzamS086YLRuvnaDigdAewz1/EFYlHpYBP5mZovKEdQQOIIYq8lApylub3HHZ6xFjV051kkGU7cudJmrXEA==}
+    engines: {node: '>= 12.0.0'}
+    peerDependencies:
+      '@babel/core': '*'
+      babel-plugin-macros: '*'
+      react: '>= 16.8.0 || 17.x.x || ^18.0.0-0'
+    peerDependenciesMeta:
+      '@babel/core':
+        optional: true
+      babel-plugin-macros:
+        optional: true
+    dependencies:
+      '@babel/core': 7.19.3
+      react: 18.2.0
+    dev: false
+
   /styled-jsx/5.0.7_otspjrsspon4ofp37rshhlhp2y:
     resolution: {integrity: sha512-b3sUzamS086YLRuvnaDigdAewz1/EFYlHpYBP5mZovKEdQQOIIYq8lApylub3HHZ6xFjV051kkGU7cudJmrXEA==}
     engines: {node: '>= 12.0.0'}
@@ -5936,6 +6002,7 @@ packages:
     dependencies:
       '@babel/core': 7.19.6
       react: 18.2.0
+    dev: true
 
   /superagent/8.0.2:
     resolution: {integrity: sha512-QtYZ9uaNAMexI7XWl2vAXAh0j4q9H7T0WVEI/y5qaUB3QLwxo+voUgCQ217AokJzUTIVOp0RTo7fhZrwhD7A2Q==}
diff --git a/samples/todo/package-lock.json b/samples/todo/package-lock.json
index c786f3797..73dd94718 100644
--- a/samples/todo/package-lock.json
+++ b/samples/todo/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "todo",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "todo",
-            "version": "0.2.11",
+            "version": "0.2.12",
             "dependencies": {
                 "@heroicons/react": "^2.0.12",
                 "@prisma/client": "^4.4.0",
diff --git a/samples/todo/package.json b/samples/todo/package.json
index f6d3e5443..9efdf340d 100644
--- a/samples/todo/package.json
+++ b/samples/todo/package.json
@@ -1,6 +1,6 @@
 {
     "name": "todo",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "private": true,
     "scripts": {
         "dev": "next dev",
diff --git a/tests/integration/tests/omit.zmodel b/tests/integration/tests/omit.zmodel
index 0ced7342d..01677619e 100644
--- a/tests/integration/tests/omit.zmodel
+++ b/tests/integration/tests/omit.zmodel
@@ -1,6 +1,6 @@
 datasource db {
     provider = 'sqlite'
-    url = 'file:./password.db'
+    url = 'file:./omit.db'
 }
 
 model User {
diff --git a/tests/integration/tests/type-coverage.test.ts b/tests/integration/tests/type-coverage.test.ts
new file mode 100644
index 000000000..c9dc2c944
--- /dev/null
+++ b/tests/integration/tests/type-coverage.test.ts
@@ -0,0 +1,70 @@
+import path from 'path';
+import { makeClient, run, setup } from './utils';
+import { ServerErrorCode } from '../../../packages/internal/src/types';
+
+describe('Type Coverage Tests', () => {
+    let origDir: string;
+
+    beforeAll(async () => {
+        origDir = path.resolve('.');
+        await setup('./tests/type-coverage.zmodel');
+    });
+
+    beforeEach(() => {
+        run('npx prisma migrate reset --schema ./zenstack/schema.prisma -f');
+    });
+
+    afterAll(() => {
+        process.chdir(origDir);
+    });
+
+    it('all types', async () => {
+        const data = {
+            string: 'string',
+            int: 100,
+            bigInt: 9007199254740991,
+            date: new Date(),
+            float: 1.23,
+            decimal: 1.2345,
+            boolean: true,
+            bytes: Buffer.from('hello'),
+        };
+        await makeClient('/api/data/Foo')
+            .post('/')
+            .send({
+                data,
+            })
+            .expect(201)
+            .expect((resp) => {
+                console.log(resp.body);
+
+                expect(resp.body.bigInt).toEqual(
+                    expect.objectContaining({
+                        type: 'BigInt',
+                        data: data.bigInt.toString(),
+                    })
+                );
+
+                expect(resp.body.date).toEqual(
+                    expect.objectContaining({
+                        type: 'Date',
+                        data: data.date.toISOString(),
+                    })
+                );
+
+                expect(resp.body.decimal).toEqual(
+                    expect.objectContaining({
+                        type: 'Decimal',
+                        data: data.decimal.toString(),
+                    })
+                );
+
+                expect(resp.body.bytes).toEqual(
+                    expect.objectContaining({
+                        type: 'Bytes',
+                        data: Array.from(data.bytes),
+                    })
+                );
+            });
+    });
+});
diff --git a/tests/integration/tests/type-coverage.zmodel b/tests/integration/tests/type-coverage.zmodel
new file mode 100644
index 000000000..2d44a8842
--- /dev/null
+++ b/tests/integration/tests/type-coverage.zmodel
@@ -0,0 +1,19 @@
+datasource db {
+    provider = 'sqlite'
+    url = 'file:./type-coverage.db'
+}
+
+model Foo {
+    id String @id @default(cuid())
+    
+    string String
+    int Int
+    bigInt BigInt
+    date DateTime
+    float Float
+    decimal Decimal
+    boolean Boolean
+    bytes Bytes
+
+    @@allow('all', true)
+}