test: add tests for string and byte slice conversions

- Add tests to verify correct conversion between strings and byte slices, including round-trip conversions and handling of empty values

Signed-off-by: Bo-Yi Wu <[email protected]>

Author: appleboy

bytesconv/bytesconv_test.go

@@ -0,0 +1,64 @@
+package bytesconv
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestStrToBytesAndBack(t *testing.T) {
+	strings := []string{
+		"",
+		"hello",
+		"世界",
+		"1234567890",
+		"with spaces and symbols!@#",
+	}
+
+	for _, s := range strings {
+		b := StrToBytes(s)
+		if string(b) != s {
+			t.Errorf("StrToBytes(%q) = %v, want %v", s, b, []byte(s))
+		}
+		// Round-trip
+		s2 := BytesToStr(b)
+		if s2 != s {
+			t.Errorf("BytesToStr(StrToBytes(%q)) = %q, want %q", s, s2, s)
+		}
+	}
+}
+
+func TestBytesToStrAndBack(t *testing.T) {
+	byteSlices := [][]byte{
+		[]byte(""),
+		[]byte("hello"),
+		[]byte("世界"),
+		[]byte("1234567890"),
+		[]byte("with spaces and symbols!@#"),
+	}
+
+	for _, b := range byteSlices {
+		s := BytesToStr(b)
+		if s != string(b) {
+			t.Errorf("BytesToStr(%v) = %q, want %q", b, s, string(b))
+		}
+		// Round-trip
+		b2 := StrToBytes(s)
+		if !bytes.Equal(b2, b) {
+			t.Errorf("StrToBytes(BytesToStr(%v)) = %v, want %v", b, b2, b)
+		}
+	}
+}
+
+func TestStrToBytes_Empty(t *testing.T) {
+	b := StrToBytes("")
+	if len(b) != 0 {
+		t.Errorf("StrToBytes(\"\") = %v, want []", b)
+	}
+}
+
+func TestBytesToStr_Empty(t *testing.T) {
+	s := BytesToStr([]byte{})
+	if s != "" {
+		t.Errorf("BytesToStr([]) = %q, want \"\"", s)
+	}
+}