diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index fe9556f..4c504f0 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -51,8 +51,8 @@ jobs:
 
       - name: moon test
         run: |
-          moon test
-          moon test --target js
+          moon test --target all
+          moon test --target all --release
 
       - name: format diff
         run: |
@@ -75,7 +75,7 @@ jobs:
 
       - name: coverage report
         run: |
-          moon coverage report -f summary summary > coverage_summary.txt
+          moon coverage report -f summary > coverage_summary.txt
           # Put the coverage report in the pipline output
           cat coverage_summary.txt >> "$GITHUB_STEP_SUMMARY"
           # We don't use the official coveralls upload tool because it takes >1min to build itself
diff --git a/crypto/sha224.mbt b/crypto/sha224.mbt
index 36c6726..90193bf 100644
--- a/crypto/sha224.mbt
+++ b/crypto/sha224.mbt
@@ -20,7 +20,7 @@ pub fn sha224(data : Bytes) -> Bytes {
     ],
   )
   let _ = ctx.update(data)
-  arr_u32_to_u8be(ctx.sha256_compute().iter().take(7))
+  arr_u32_to_u8be(ctx.sha256_compute().iter().take(7), 224)
 }
 
 pub fn sha224_from_iter(data : Iter[Byte]) -> Bytes {
@@ -31,7 +31,7 @@ pub fn sha224_from_iter(data : Iter[Byte]) -> Bytes {
     ],
   )
   let _ = ctx.update_from_iter(data)
-  arr_u32_to_u8be(ctx.sha256_compute().iter().take(7))
+  arr_u32_to_u8be(ctx.sha256_compute().iter().take(7), 224)
 }
 
 test {
diff --git a/crypto/sha256.mbt b/crypto/sha256.mbt
index 3ecb9ad..f62e8b7 100644
--- a/crypto/sha256.mbt
+++ b/crypto/sha256.mbt
@@ -175,20 +175,20 @@ fn sha256_compute(
 
 /// Compute the Sha256 digest from given Sha256Context
 pub fn finalize(self : Sha256Context) -> Bytes {
-  arr_u32_to_u8be(self.sha256_compute().iter())
+  arr_u32_to_u8be(self.sha256_compute().iter(), 256)
 }
 
 /// Compute the Sha256 digest in `Bytes` of some `data`. Note that Sha256 is big-endian.
 pub fn sha256(data : Bytes) -> Bytes {
   let ctx = Sha256Context::new()
   let _ = ctx.update(data)
-  arr_u32_to_u8be(ctx.sha256_compute().iter())
+  arr_u32_to_u8be(ctx.sha256_compute().iter(), 256)
 }
 
 pub fn sha256_from_iter(data : Iter[Byte]) -> Bytes {
   let ctx = Sha256Context::new()
   let _ = ctx.update_from_iter(data)
-  arr_u32_to_u8be(ctx.sha256_compute().iter())
+  arr_u32_to_u8be(ctx.sha256_compute().iter(), 256)
 }
 
 test {
diff --git a/crypto/sm3.mbt b/crypto/sm3.mbt
index 1d99507..4260657 100644
--- a/crypto/sm3.mbt
+++ b/crypto/sm3.mbt
@@ -236,20 +236,20 @@ fn sm3_compute(
 
 /// Compute the SM3 digest from given SM3Context
 pub fn finalize(self : SM3Context) -> Bytes {
-  arr_u32_to_u8be(self.sm3_compute().iter())
+  arr_u32_to_u8be(self.sm3_compute().iter(), 256)
 }
 
 /// Compute the SM3 digest in `Bytes` of some `data`. Note that SM3 is big-endian.
 pub fn sm3(data : Bytes) -> Bytes {
   let ctx = SM3Context::new()
   let _ = ctx.update(data)
-  arr_u32_to_u8be(ctx.sm3_compute().iter())
+  arr_u32_to_u8be(ctx.sm3_compute().iter(), 256)
 }
 
 pub fn sm3_from_iter(data : Iter[Byte]) -> Bytes {
   let ctx = SM3Context::new()
   let _ = ctx.update_from_iter(data)
-  arr_u32_to_u8be(ctx.sm3_compute().iter())
+  arr_u32_to_u8be(ctx.sm3_compute().iter(), 256)
 }
 
 test {
diff --git a/crypto/utils.mbt b/crypto/utils.mbt
index caeb066..ee4a15e 100644
--- a/crypto/utils.mbt
+++ b/crypto/utils.mbt
@@ -90,8 +90,8 @@ fn bytes_u8_to_u32be(x : Bytes, ~i : Int = 0) -> UInt {
 
 /// convert an array of UInt to Bytes in big endian
 
-fn arr_u32_to_u8be(x : Iter[UInt]) -> Bytes {
-  let temp : Bytes = Bytes::make(x.count() * 4, b'\x00')
+fn arr_u32_to_u8be(x : Iter[UInt], bits : Int) -> Bytes {
+  let temp : Bytes = Bytes::new(bits / 8)
   x.eachi(
     fn(i, d) {
       temp[i * 4 + 0] = d.lsr(24).to_byte()
diff --git a/fs/fs_test.mbt b/fs/fs_test.mbt
index 1ce0042..05005d6 100644
--- a/fs/fs_test.mbt
+++ b/fs/fs_test.mbt
@@ -23,10 +23,12 @@ test "write_and_read" {
     ,
   )
   assert_true!(@fs.path_exists(~path))
-  let byte = @fs.read_file_to_bytes!(~path).iter().map(fn(x) { x.to_uint() })
+  let byte = @fs.read_file_to_bytes!(~path)
   inspect!(
     byte,
-    content="[116, 97, 114, 103, 101, 116, 47, 10, 46, 109, 111, 111, 110, 99, 97, 107, 101, 115, 47, 10]",
+    content=
+      #|b"\x74\x61\x72\x67\x65\x74\x2f\x0a\x2e\x6d\x6f\x6f\x6e\x63\x61\x6b\x65\x73\x2f\x0a"
+    ,
   )
   @fs.remove_file!(~path)
   assert_false!(@fs.path_exists(~path))