Remove obsolete tests

psiphon/common/quic/obfuscator_test.go

@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2018, Psiphon Inc.
- * All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-package quic
-
-import (
-	"testing"
-
-	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common"
-)
-
-func TestPaddingLen(t *testing.T) {
-
-	c, err := NewObfuscatedPacketConn(nil, false, "key")
-	if err != nil {
-		t.Fatalf("NewObfuscatedPacketConn failed: %s", err)
-	}
-
-	for max := 0; max <= 255; max++ {
-
-		counts := make(map[int]int)
-		repeats := 200000
-
-		for r := 0; r < repeats; r++ {
-			padding, err := c.getRandomPaddingLen(max)
-			if err != nil {
-				t.Fatalf("getRandomPaddingLen failed: %s", err)
-			}
-			if padding < 0 || padding > max {
-				t.Fatalf("unexpected padding: max = %d, padding = %d", max, padding)
-			}
-			counts[padding] += 1
-		}
-
-		expected := repeats / (max + 1)
-
-		for i := 0; i <= max; i++ {
-			if counts[i] < (expected/10)*8 {
-				t.Logf("max = %d, counts = %+v", max, counts)
-				t.Fatalf("unexpected low count: max = %d, i = %d, count = %d", max, i, counts[i])
-			}
-		}
-	}
-}
-
-func Disabled_TestPaddingLenLimit(t *testing.T) {
-
-	// This test takes up to ~2 minute to complete, so it's disabled by default.
-
-	c, err := NewObfuscatedPacketConn(nil, false, "key")
-	if err != nil {
-		t.Fatalf("NewObfuscatedPacketConn failed: %s", err)
-	}
-
-	// Use large blocks to get close to the key stream limit.
-
-	var b [2 * 1024 * 1024 * 1024]byte
-	n := int64(0)
-
-	for i := 0; i < 127; i++ {
-		err := c.getRandomBytes(b[:])
-		if err != nil {
-			t.Fatalf("getRandomBytes failed: %s", err)
-		}
-		n += int64(len(b))
-	}
-
-	// Stop using large blocks 64 bytes short of the limit, 2^38-64.
-
-	err = c.getRandomBytes(b[0 : len(b)-128])
-	if err != nil {
-		t.Fatalf("getRandomBytes failed: %s", err)
-	}
-	n += int64(len(b) - 128)
-
-	// Invoke byte at a time across the limit boundary to ensure we
-	// don't jump over the limit case.
-
-	for i := 0; i < 192; i++ {
-		err := c.getRandomBytes(b[0:1])
-		if err != nil {
-			t.Fatalf("getRandomBytes failed: %s", err)
-		}
-		n += int64(1)
-	}
-}
-
-func BenchmarkPaddingLen(b *testing.B) {
-
-	c, err := NewObfuscatedPacketConn(nil, false, "key")
-	if err != nil {
-		b.Fatalf("NewObfuscatedPacketConn failed: %s", err)
-	}
-
-	b.Run("getPaddingLen", func(b *testing.B) {
-		for n := 0; n < b.N; n++ {
-			_, _ = c.getRandomPaddingLen(n % MAX_PADDING)
-		}
-	})
-
-	b.Run("SecureRandomRange", func(b *testing.B) {
-		for n := 0; n < b.N; n++ {
-			_, _ = common.MakeSecureRandomRange(0, n%MAX_PADDING)
-		}
-	})
-}