[🤖] Add Unit-Tests

langext/bytes_test.go

@@ -0,0 +1,68 @@
+package langext
+
+import (
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func TestFormatBytesToSI(t *testing.T) {
+	tst.AssertEqual(t, FormatBytesToSI(0), "0 B")
+	tst.AssertEqual(t, FormatBytesToSI(999), "999 B")
+	tst.AssertEqual(t, FormatBytesToSI(1000), "1.0 kB")
+	tst.AssertEqual(t, FormatBytesToSI(1500), "1.5 kB")
+	tst.AssertEqual(t, FormatBytesToSI(1000*1000), "1.0 MB")
+	tst.AssertEqual(t, FormatBytesToSI(1000*1000*1000), "1.0 GB")
+}
+
+func TestFormatBytes(t *testing.T) {
+	tst.AssertEqual(t, FormatBytes(0), "0 B")
+	tst.AssertEqual(t, FormatBytes(1023), "1023 B")
+	tst.AssertEqual(t, FormatBytes(1024), "1.0 KiB")
+	tst.AssertEqual(t, FormatBytes(1024*1024), "1.0 MiB")
+	tst.AssertEqual(t, FormatBytes(1024*1024*1024), "1.0 GiB")
+	tst.AssertEqual(t, FormatBytes(1536), "1.5 KiB")
+}
+
+func TestBytesXOR(t *testing.T) {
+	a := []byte{0x01, 0x02, 0x03, 0xFF}
+	b := []byte{0xFF, 0xFE, 0xFD, 0x00}
+
+	r, err := BytesXOR(a, b)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	expected := []byte{0xFE, 0xFC, 0xFE, 0xFF}
+	tst.AssertArrayEqual(t, r, expected)
+}
+
+func TestBytesXORLengthMismatch(t *testing.T) {
+	a := []byte{0x01, 0x02}
+	b := []byte{0x01, 0x02, 0x03}
+
+	_, err := BytesXOR(a, b)
+	if err == nil {
+		t.Fatalf("expected error on length mismatch, got nil")
+	}
+}
+
+func TestBytesXOREmpty(t *testing.T) {
+	r, err := BytesXOR([]byte{}, []byte{})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	tst.AssertEqual(t, len(r), 0)
+}
+
+func TestBytesXORSelfIsZero(t *testing.T) {
+	a := []byte{0xAB, 0xCD, 0xEF}
+	r, err := BytesXOR(a, a)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	for i, v := range r {
+		if v != 0 {
+			t.Errorf("expected zero at index %d, got %#x", i, v)
+		}
+	}
+}