From f4008092dd99969299bef05b975a00f654026c4c Mon Sep 17 00:00:00 2001
From: Mike Fleetwood <mike.fleetwood@googlemail.com>
Date: Sun, 7 May 2017 14:18:27 +0100
Subject: [PATCH] Add test for bug #771670 in BlockSpecial::operator==()
 (#781978)

Add a specific test for the failure found in bug 771670 and fixed by
commit:
    253c4d641687f21a4656af0926af18371d47d654
    Fix BlockSpecial comparison (#771670)

Bug 781978 - Add Google Test C++ test framework
---
 tests/test_BlockSpecial.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tests/test_BlockSpecial.cc b/tests/test_BlockSpecial.cc
index 1f82367d..d2045732 100644
--- a/tests/test_BlockSpecial.cc
+++ b/tests/test_BlockSpecial.cc
@@ -342,6 +342,18 @@ TEST( BlockSpecialTest, OperatorEqualsTwoDifferentBlockDevices )
 	EXPECT_FALSE( bs1 == bs2 );
 }
 
+TEST( BlockSpecialTest, OperatorEqualsSameBlockDevicesWithMinorZero )
+{
+	// Test for fix in bug #771670.  Ensure that block devices with minor number 0 are
+	// compared by major, minor pair rather than by name.
+	BlockSpecial::clear_cache();
+	BlockSpecial::register_block_special( "/dev/mapper/encrypted_swap", 254, 0 );
+	BlockSpecial::register_block_special( "/dev/dm-0", 254, 0 );
+	BlockSpecial bs1( "/dev/mapper/encrypted_swap" );
+	BlockSpecial bs2( "/dev/dm-0" );
+	EXPECT_TRUE( bs1 == bs2 );
+}
+
 // FIXME: Write tests to fully check operator<() is working as intended.
 
 }  // namespace GParted