[gparted] Add /dev/disk/by-id/ symlink in CI for test_BlockSpecial

[Curtis Gedak <gedakc src gnome org>]

commit 19ba6df8f06021cd80762f865ca7221b2f5855de
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Tue Mar 10 08:01:11 2020 +0000

    Add /dev/disk/by-id/ symlink in CI for test_BlockSpecial
    
    This previous commit [1] excluded unit test
    BlockSpecialTest.NamedBlockSpecialObjectBySymlinkMatches because GNOME
    GitLab Docker CI images don't have /dev/disk hierarchy and so no
    symbolic links to block devices.
    
    Create the /dev/disk/by-id directory and a symlink for this unit test to
    use in the new tests/makedev.sh script.
    
    [1] fe2fc33e67980f0b4a5bba958d257be54715f301
        Exclude unit test which fails in Docker CI image (!4)

 .gitlab-ci.yml   | 4 +---
 tests/makedev.sh | 9 +++++++++
 2 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 37632bb9..d5754991 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -58,11 +58,9 @@ stages:
     - nproc=`grep -c '^processor' /proc/cpuinfo` || nproc=1
     - echo nproc=$nproc
     - make -j $nproc
-    # Exclude specific unit test which fails without /dev/disk in Docker images.
-    - export GTEST_FILTER='-BlockSpecialTest.NamedBlockSpecialObjectBySymlinkMatches'
     # Exclude specific unit tests which fail without being able to create
     # loop devices in Docker images.
-    - GTEST_FILTER+=':My/SupportedFileSystemsTest.Create/lvm2pv'
+    - export GTEST_FILTER='-My/SupportedFileSystemsTest.Create/lvm2pv'
     - GTEST_FILTER+=':My/SupportedFileSystemsTest.CreateAndReadUsage/btrfs'
     - GTEST_FILTER+=':My/SupportedFileSystemsTest.CreateAndReadUsage/lvm2pv'
     - GTEST_FILTER+=':My/SupportedFileSystemsTest.CreateAndReadUsage/nilfs2'
diff --git a/tests/makedev.sh b/tests/makedev.sh
index 3c4166ea..735d407d 100755
--- a/tests/makedev.sh
+++ b/tests/makedev.sh
@@ -22,3 +22,12 @@ do
                chown root:disk "$name"
        fi
 done
+
+# Create /dev/disk/by-id/SYMLINK to first block special device named in
+# /proc/partitions, if directory doesn't already exist, for
+# test_BlockSpecial.
+if test ! -e /dev/disk/by-id; then
+       mkdir -v -m 0755 -p /dev/disk/by-id/
+       dev=`awk '$1=="major" {next} NF==4 {print $4; exit}' /proc/partitions`
+       ln -v -s "/dev/$dev" "/dev/disk/by-id/gparted-$dev"
+fi