diff --git a/docs/release-note.md b/docs/release-note.md
index 781de7b..6d539df 100644
--- a/docs/release-note.md
+++ b/docs/release-note.md
@@ -4,10 +4,14 @@
 
 🚀 Highlight Features
 
-- Improved the as-test performances.
-- Introduce new features `isolated: false` to significantly reduce test execution time in large projects. ([#73](https://github.com/wasm-ecosystem/assemblyscript-unittest-framework/pull/73))
+- Introduced new features `isolated: false` to significantly reduce test execution time in large projects. ([#73](https://github.com/wasm-ecosystem/assemblyscript-unittest-framework/pull/73))
 - Introduce setup and teardown API. ([#77](https://github.com/wasm-ecosystem/assemblyscript-unittest-framework/pull/77))
 
+🛠️ Improvements
+
+- Improved the as-test performances.
+- Improved the error messages when test case assert failed.
+
 ## 1.3.1
 
 🚀 Highlight Features
@@ -18,7 +22,7 @@
   - `2` means invalid AS file.
   - `>2` means configuration error.
 
-🚀 Improvements
+🛠️ Improvements
 
 - Proper handling of situations where AS files are not invalid.
 
@@ -35,7 +39,7 @@
   - Expose the framework's `log` function in the configuration file, and the logs redirected to this function will be appended to the final test report.
   - Support test crashes and provide good call stack information.
 
-🚀 Improvements
+🛠️ Improvements
 
 - Code coverage calculation.
   - Skip type definitions.
diff --git a/src/core/execute.ts b/src/core/execute.ts
index f28e002..5087709 100644
--- a/src/core/execute.ts
+++ b/src/core/execute.ts
@@ -47,7 +47,7 @@ async function nodeExecutor(
   const binaryBuffer = await readFile(instrumentResult.instrumentedWasm);
   const binary = binaryBuffer.buffer.slice(binaryBuffer.byteOffset, binaryBuffer.byteOffset + binaryBuffer.byteLength);
   const importFuncList = parseImportFunctionInfo(binary as ArrayBuffer);
-  supplyDefaultFunction(importFuncList, importObject);
+  supplyDefaultFunction(importFuncList, importObject, importsArg);
   const ins = await instantiate(binary, importObject);
   importsArg.module = ins.module;
   importsArg.instance = ins.instance;
diff --git a/src/utils/index.ts b/src/utils/index.ts
index d28ddad..5d750ad 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,5 +1,5 @@
 import { Imports as ASImports } from "@assemblyscript/loader";
-import { ImportFunctionInfo } from "../interface.js";
+import { ImportFunctionInfo, ImportsArgument } from "../interface.js";
 import { TypeKind } from "wasmparser/dist/cjs/WasmParser.js";
 
 export function json2map<V>(json: Record<string, V>): Map<string, V> {
@@ -45,16 +45,34 @@ export function checkGenerics(functionName: string): string | undefined {
   return undefined;
 }
 
-export function supplyDefaultFunction(infos: ImportFunctionInfo[], importObject: ASImports) {
+export function supplyDefaultFunction(
+  infos: ImportFunctionInfo[],
+  importObject: ASImports,
+  importsArg: ImportsArgument
+) {
   for (const info of infos) {
     const module = info.module;
     const name = info.name;
-    if (importObject[module]?.[name] === undefined) {
-      if (importObject[module] === undefined) {
-        importObject[module] = {};
-      }
-      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-explicit-any, @typescript-eslint/no-unused-vars
-      (importObject[module] as any)[name] = (..._args: unknown[]): unknown => {
+    const importObjectModule = importObject[module] ?? {};
+    importObject[module] = importObjectModule;
+    if (importObjectModule[name] !== undefined) {
+      continue;
+    }
+    if (module === "env" && name === "abort") {
+      importObjectModule[name] = (msg: number, file: number, line: number, col: number) => {
+        const exports = importsArg.exports!;
+        throw new WebAssembly.RuntimeError(
+          `abort: ${exports.__getString(msg)} at ${exports.__getString(file)}:${line}:${col}`
+        );
+      };
+    } else if (module === "env" && name === "trace") {
+      importObjectModule[name] = (msg: number, n: number, ...args: number[]) => {
+        const exports = importsArg.exports!;
+        importsArg.framework.log(`trace: ${exports.__getString(msg)}${n > 0 ? " " : ""}${args.slice(0, n).join(", ")}`);
+      };
+    } else {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      importObjectModule[name] = (..._args: unknown[]): unknown => {
         return info.return?.kind === TypeKind.i64 ? BigInt(0) : 0;
       };
     }
diff --git a/tests/e2e/assertFailed/assertOnTest.test.ts b/tests/e2e/assertFailed/assertOnTest.test.ts
index 8d4415e..0342925 100644
--- a/tests/e2e/assertFailed/assertOnTest.test.ts
+++ b/tests/e2e/assertFailed/assertOnTest.test.ts
@@ -1,7 +1,6 @@
 import { test, expect } from "../../../assembly";
-import { log } from "./env";
 
 test("assert on test", () => {
-  log("This test will fail due to an assertion error");
-  assert(false, "This assertion is expected to fail");
+  trace("this test will fail due to an assertion error");
+  assert(false, "this assertion is expected to fail");
 });
diff --git a/tests/e2e/assertFailed/env.ts b/tests/e2e/assertFailed/env.ts
deleted file mode 100644
index b8c4440..0000000
--- a/tests/e2e/assertFailed/env.ts
+++ /dev/null
@@ -1 +0,0 @@
-export declare function log(msg: string): void;
diff --git a/tests/e2e/assertFailed/stdout.txt b/tests/e2e/assertFailed/stdout.txt
index 3353fdf..efe8171 100644
--- a/tests/e2e/assertFailed/stdout.txt
+++ b/tests/e2e/assertFailed/stdout.txt
@@ -8,14 +8,14 @@ test case: 0/2 (success/total)
 Error Message: 
   assert on test: 
     Test Crashed!
-This test will fail due to an assertion error
-Reason: unreachable
-  at start:tests/e2e/assertFailed/assertOnTest.test~anonymous|0 (tests/e2e/assertFailed/assertOnTest.test.ts:6:2)
-  at executeTestFunction (tests/e2e/assertFailed/tmp/assertOnTest.test.instrumented.wasm:1:649)
+trace: this test will fail due to an assertion error
+Reason: abort: this assertion is expected to fail at tests/e2e/assertFailed/assertOnTest.test.ts:5:3
+  at start:tests/e2e/assertFailed/assertOnTest.test~anonymous|0 (tests/e2e/assertFailed/assertOnTest.test.ts:5:2)
+  at executeTestFunction (tests/e2e/assertFailed/tmp/assertOnTest.test.instrumented.wasm:1:780)
 
   tests/e2e/assertFailed/tmp/assertOnInit.test - init: 
     Test Crashed!
-Reason: unreachable
+Reason: abort: null at tests/e2e/assertFailed/assertOnInit.test.ts:1:1
   at start:tests/e2e/assertFailed/assertOnInit.test (tests/e2e/assertFailed/assertOnInit.test.ts:1:0)
-  at ~start (tests/e2e/assertFailed/tmp/assertOnInit.test.instrumented.wasm:1:265)
+  at ~start (tests/e2e/assertFailed/tmp/assertOnInit.test.instrumented.wasm:1:289)
 
diff --git a/tests/e2e/setup-teardown/stdout.txt b/tests/e2e/setup-teardown/stdout.txt
index 0c675e0..05761c3 100644
--- a/tests/e2e/setup-teardown/stdout.txt
+++ b/tests/e2e/setup-teardown/stdout.txt
@@ -8,7 +8,7 @@ test case: 18/19 (success/total)
 Error Message: 
   tests/e2e/setup-teardown/tmp/setup_out_of_block.test - init: 
     Test Crashed!
-Reason: unreachable
+Reason: abort: register setup function failed at assembly/implement.ts:20:3
   at assembly/implement/beforeEachImpl (assembly/implement.ts:20:2)
   at assembly/index/beforeEach (assembly/index.ts:47:2)
   at start:tests/e2e/setup-teardown/setup_out_of_block.test (tests/e2e/setup-teardown/tmp/setup_out_of_block.test.instrumented.wasm:1:547)