More ArrayBuffer support

js/common/util.go

@@ -65,3 +65,17 @@ func ToBytes(data interface{}) ([]byte, error) {
 		return nil, fmt.Errorf("invalid type %T, expected string, []byte or ArrayBuffer", data)
 	}
 }
+
+// ToString tries to return a string from compatible types.
+func ToString(data interface{}) (string, error) {
+	switch dt := data.(type) {
+	case []byte:
+		return string(dt), nil
+	case string:
+		return dt, nil
+	case goja.ArrayBuffer:
+		return string(dt.Bytes()), nil
+	default:
+		return "", fmt.Errorf("invalid type %T, expected string, []byte or ArrayBuffer", data)
+	}
+}

js/common/util_test.go

@@ -45,6 +45,7 @@ func TestThrow(t *testing.T) {
 }
 
 func TestToBytes(t *testing.T) {
+	t.Parallel()
 	rt := goja.New()
 	b := []byte("hello")
 	testCases := []struct {
@@ -70,3 +71,31 @@ func TestToBytes(t *testing.T) {
 		})
 	}
 }
+
+func TestToString(t *testing.T) {
+	t.Parallel()
+	rt := goja.New()
+	s := "hello"
+	testCases := []struct {
+		in             interface{}
+		expOut, expErr string
+	}{
+		{s, s, ""},
+		{"hello", s, ""},
+		{rt.NewArrayBuffer([]byte(s)), s, ""},
+		{struct{}{}, "", "invalid type struct {}, expected string, []byte or ArrayBuffer"},
+	}
+
+	for _, tc := range testCases { //nolint: paralleltest // false positive: https://github.com/kunwardeep/paralleltest/issues/8
+		tc := tc
+		t.Run(fmt.Sprintf("%T", tc.in), func(t *testing.T) {
+			t.Parallel()
+			out, err := ToString(tc.in)
+			if tc.expErr != "" {
+				assert.EqualError(t, err, tc.expErr)
+				return
+			}
+			assert.Equal(t, tc.expOut, out)
+		})
+	}
+}

js/initcontext.go

@@ -207,8 +207,9 @@ func (i *InitContext) compileImport(src, filename string) (*goja.Program, error)
 	return pgm, err
 }
 
-// Open implements open() in the init context and will read and return the contents of a file.
-// If the second argument is "b" it returns the data as a binary array, otherwise as a string.
+// Open implements open() in the init context and will read and return the
+// contents of a file. If the second argument is "b" it returns an ArrayBuffer
+// instance, otherwise a string representation.
 func (i *InitContext) Open(ctx context.Context, filename string, args ...string) (goja.Value, error) {
 	if lib.GetState(ctx) != nil {
 		return nil, errors.New(openCantBeUsedOutsideInitContextMsg)
@@ -242,7 +243,8 @@ func (i *InitContext) Open(ctx context.Context, filename string, args ...string)
 	}
 
 	if len(args) > 0 && args[0] == "b" {
-		return i.runtime.ToValue(data), nil
+		ab := i.runtime.NewArrayBuffer(data)
+		return i.runtime.ToValue(&ab), nil
 	}
 	return i.runtime.ToValue(string(data)), nil
 }

js/initcontext_test.go

@@ -239,24 +239,22 @@ func TestInitContextRequire(t *testing.T) {
 	})
 }
 
-func createAndReadFile(t *testing.T, file string, content []byte, expectedLength int, binary bool) (*BundleInstance, error) {
+func createAndReadFile(t *testing.T, file string, content []byte, expectedLength int, binary string) (*BundleInstance, error) {
+	t.Helper()
 	fs := afero.NewMemMapFs()
 	assert.NoError(t, fs.MkdirAll("/path/to", 0o755))
 	assert.NoError(t, afero.WriteFile(fs, "/path/to/"+file, content, 0o644))
 
-	binaryArg := ""
-	if binary {
-		binaryArg = ",\"b\""
-	}
-
 	data := fmt.Sprintf(`
-		export let data = open("/path/to/%s"%s);
+		let binArg = "%s";
+		export let data = open("/path/to/%s", binArg);
 		var expectedLength = %d;
-		if (data.length != expectedLength) {
-			throw new Error("Length not equal, expected: " + expectedLength + ", actual: " + data.length);
+		var len = binArg === "b" ? "byteLength" : "length";
+		if (data[len] != expectedLength) {
+			throw new Error("Length not equal, expected: " + expectedLength + ", actual: " + data[len]);
 		}
 		export default function() {}
-	`, file, binaryArg, expectedLength)
+	`, binary, file, expectedLength)
 	b, err := getSimpleBundle(t, "/path/to/script.js", data, fs)
 
 	if !assert.NoError(t, err) {
@@ -282,8 +280,9 @@ func TestInitContextOpen(t *testing.T) {
 		//{[]byte{00, 36, 32, 127}, "utf-16", 2},   // $€
 	}
 	for _, tc := range testCases {
+		tc := tc
 		t.Run(tc.file, func(t *testing.T) {
-			bi, err := createAndReadFile(t, tc.file, tc.content, tc.length, false)
+			bi, err := createAndReadFile(t, tc.file, tc.content, tc.length, "")
 			if !assert.NoError(t, err) {
 				return
 			}
@@ -292,12 +291,12 @@ func TestInitContextOpen(t *testing.T) {
 	}
 
 	t.Run("Binary", func(t *testing.T) {
-		bi, err := createAndReadFile(t, "/path/to/file.bin", []byte("hi!\x0f\xff\x01"), 6, true)
+		bi, err := createAndReadFile(t, "/path/to/file.bin", []byte("hi!\x0f\xff\x01"), 6, "b")
 		if !assert.NoError(t, err) {
 			return
 		}
-		bytes := []byte{104, 105, 33, 15, 255, 1}
-		assert.Equal(t, bytes, bi.Runtime.Get("data").Export())
+		buf := bi.Runtime.NewArrayBuffer([]byte{104, 105, 33, 15, 255, 1})
+		assert.Equal(t, buf, bi.Runtime.Get("data").Export())
 	})
 
 	testdata := map[string]string{
@@ -306,8 +305,9 @@ func TestInitContextOpen(t *testing.T) {
 	}
 
 	for name, loadPath := range testdata {
+		loadPath := loadPath
 		t.Run(name, func(t *testing.T) {
-			_, err := createAndReadFile(t, loadPath, []byte("content"), 7, false)
+			_, err := createAndReadFile(t, loadPath, []byte("content"), 7, "")
 			if !assert.NoError(t, err) {
 				return
 			}
@@ -409,7 +409,7 @@ func TestRequestWithBinaryFile(t *testing.T) {
 
 	v, err := bi.exports[consts.DefaultFn](goja.Undefined())
 	assert.NoError(t, err)
-	assert.NotNil(t, v)
+	require.NotNil(t, v)
 	assert.Equal(t, true, v.Export())
 
 	<-ch

js/modules/k6/crypto/crypto.go

@@ -36,6 +36,8 @@ import (
 	"golang.org/x/crypto/md4"
 	"golang.org/x/crypto/ripemd160"
 
+	"github.com/dop251/goja"
+
 	"github.com/loadimpact/k6/js/common"
 )
 
@@ -52,16 +54,18 @@ func New() *Crypto {
 }
 
 // RandomBytes returns random data of the given size.
-func (*Crypto) RandomBytes(ctx context.Context, size int) []byte {
+func (*Crypto) RandomBytes(ctx context.Context, size int) *goja.ArrayBuffer {
+	rt := common.GetRuntime(ctx)
 	if size < 1 {
-		common.Throw(common.GetRuntime(ctx), errors.New("invalid size"))
+		common.Throw(rt, errors.New("invalid size"))
 	}
 	bytes := make([]byte, size)
 	_, err := rand.Read(bytes)
 	if err != nil {
-		common.Throw(common.GetRuntime(ctx), err)
+		common.Throw(rt, err)
 	}
-	return bytes
+	ab := rt.NewArrayBuffer(bytes)
+	return &ab
 }
 
 // Md4 returns the MD4 hash of input in the given encoding.
@@ -171,6 +175,7 @@ func (hasher *Hasher) Update(input interface{}) {
 // Digest returns the hash value in the given encoding.
 func (hasher *Hasher) Digest(outputEncoding string) interface{} {
 	sum := hasher.hash.Sum(nil)
+	rt := common.GetRuntime(hasher.ctx)
 
 	switch outputEncoding {
 	case "base64":
@@ -186,11 +191,12 @@ func (hasher *Hasher) Digest(outputEncoding string) interface{} {
 		return hex.EncodeToString(sum)
 
 	case "binary":
-		return sum
+		ab := rt.NewArrayBuffer(sum)
+		return &ab
 
 	default:
 		err := errors.New("Invalid output encoding: " + outputEncoding)
-		common.Throw(common.GetRuntime(hasher.ctx), err)
+		common.Throw(rt, err)
 	}
 
 	return ""

js/modules/k6/crypto/crypto_test.go

@@ -54,9 +54,9 @@ func TestCryptoAlgorithms(t *testing.T) {
 
 	t.Run("RandomBytesSuccess", func(t *testing.T) {
 		_, err := rt.RunString(`
-		var bytes = crypto.randomBytes(5);
-		if (bytes.length !== 5) {
-			throw new Error("Incorrect size: " + bytes.length);
+		var buf = crypto.randomBytes(5);
+		if (buf.byteLength !== 5) {
+			throw new Error("Incorrect size: " + buf.byteLength);
 		}`)
 
 		assert.NoError(t, err)
@@ -303,7 +303,7 @@ func TestOutputEncoding(t *testing.T) {
 		  return true;
 		}
 
-		var resultBinary = hasher.digest("binary");
+		var resultBinary = new Uint8Array(hasher.digest("binary"));
 		if (!arraysEqual(resultBinary,  correctBinary)) {
 			throw new Error("Binary encoding mismatch: " + JSON.stringify(resultBinary));
 		}

js/modules/k6/encoding/encoding.go

@@ -55,8 +55,9 @@ func (e *Encoding) B64encode(ctx context.Context, input interface{}, encoding st
 }
 
 // B64decode returns the decoded data of the base64 encoded input string using
-// the given encoding.
-func (e *Encoding) B64decode(ctx context.Context, input string, encoding string) string {
+// the given encoding. If format is "s" it returns the data as a string,
+// otherwise as an ArrayBuffer.
+func (e *Encoding) B64decode(ctx context.Context, input, encoding, format string) interface{} {
 	var output []byte
 	var err error
 
@@ -73,9 +74,18 @@ func (e *Encoding) B64decode(ctx context.Context, input string, encoding string)
 		output, err = base64.StdEncoding.DecodeString(input)
 	}
 
+	rt := common.GetRuntime(ctx) //nolint: ifshort
 	if err != nil {
-		common.Throw(common.GetRuntime(ctx), err)
+		common.Throw(rt, err)
+	}
+
+	var out interface{}
+	if format == "s" {
+		out = string(output)
+	} else {
+		ab := rt.NewArrayBuffer(output)
+		out = &ab
 	}
 
-	return string(output)
+	return out
 }

js/modules/k6/encoding/encoding_test.go

@@ -31,6 +31,7 @@ import (
 )
 
 func TestEncodingAlgorithms(t *testing.T) {
+	t.Parallel()
 	if testing.Short() {
 		return
 	}
@@ -54,9 +55,12 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("DefaultDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "hello world";
-			var decoded = encoding.b64decode("aGVsbG8gd29ybGQ=");
-			if (decoded !== correct) {
-				throw new Error("Decoding mismatch: " + decoded);
+			var decBin = encoding.b64decode("aGVsbG8gd29ybGQ=");
+
+			var decText = String.fromCharCode.apply(null, new Uint8Array(decBin));
+			decText = decodeURIComponent(escape(decText));
+			if (decText !== correct) {
+				throw new Error("Decoding mismatch: " + decText);
 			}`)
 			assert.NoError(t, err)
 		})
@@ -70,6 +74,17 @@ func TestEncodingAlgorithms(t *testing.T) {
 			}`)
 			assert.NoError(t, err)
 		})
+		t.Run("DefaultArrayBufferDec", func(t *testing.T) { //nolint: paralleltest // weird that it triggers here, and these tests can't be parallel
+			_, err := rt.RunString(`
+			var exp = "hello";
+			var decBin = encoding.b64decode("aGVsbG8=");
+			var decText = String.fromCharCode.apply(null, new Uint8Array(decBin));
+			decText = decodeURIComponent(escape(decText));
+			if (decText !== exp) {
+				throw new Error("Decoding mismatch: " + decText);
+			}`)
+			assert.NoError(t, err)
+		})
 		t.Run("DefaultUnicodeEnc", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "44GT44KT44Gr44Gh44Gv5LiW55WM";
@@ -82,9 +97,11 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("DefaultUnicodeDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "こんにちは世界";
-			var decoded = encoding.b64decode("44GT44KT44Gr44Gh44Gv5LiW55WM");
-			if (decoded !== correct) {
-				throw new Error("Decoding mismatch: " + decoded);
+			var decBin = encoding.b64decode("44GT44KT44Gr44Gh44Gv5LiW55WM");
+			var decText = String.fromCharCode.apply(null, new Uint8Array(decBin));
+			decText = decodeURIComponent(escape(decText));
+			if (decText !== correct) {
+				throw new Error("Decoding mismatch: " + decText);
 			}`)
 			assert.NoError(t, err)
 		})
@@ -100,7 +117,7 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("StdDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "hello world";
-			var decoded = encoding.b64decode("aGVsbG8gd29ybGQ=", "std");
+			var decoded = encoding.b64decode("aGVsbG8gd29ybGQ=", "std", "s");
 			if (decoded !== correct) {
 				throw new Error("Decoding mismatch: " + decoded);
 			}`)
@@ -118,7 +135,7 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("RawStdDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "hello world";
-			var decoded = encoding.b64decode("aGVsbG8gd29ybGQ", "rawstd");
+			var decoded = encoding.b64decode("aGVsbG8gd29ybGQ", "rawstd", "s");
 			if (decoded !== correct) {
 				throw new Error("Decoding mismatch: " + decoded);
 			}`)
@@ -136,7 +153,7 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("URLDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "小飼弾..";
-			var decoded = encoding.b64decode("5bCP6aO85by-Li4=", "url");
+			var decoded = encoding.b64decode("5bCP6aO85by-Li4=", "url", "s");
 			if (decoded !== correct) {
 				throw new Error("Decoding mismatch: " + decoded);
 			}`)
@@ -154,7 +171,7 @@ func TestEncodingAlgorithms(t *testing.T) {
 		t.Run("RawURLDec", func(t *testing.T) {
 			_, err := rt.RunString(`
 			var correct = "小飼弾..";
-			var decoded = encoding.b64decode("5bCP6aO85by-Li4", "rawurl");
+			var decoded = encoding.b64decode("5bCP6aO85by-Li4", "rawurl", "s");
 			if (decoded !== correct) {
 				throw new Error("Decoding mismatch: " + decoded);
 			}`)

js/modules/k6/http/request.go

@@ -113,6 +113,7 @@ func (h *HTTP) Request(ctx context.Context, method string, url goja.Value, args
 	if err != nil {
 		return nil, err
 	}
+	processResponse(ctx, resp, req.ResponseType)
 	return h.responseFromHttpext(resp), nil
 }
 
@@ -450,6 +451,7 @@ func (h *HTTP) Batch(ctx context.Context, reqsV goja.Value) (goja.Value, error)
 	errs := httpext.MakeBatchRequests(
 		ctx, batchReqs, reqCount,
 		int(state.Options.Batch.Int64), int(state.Options.BatchPerHost.Int64),
+		processResponse,
 	)
 
 	for i := 0; i < reqCount; i++ {