[ostree: 26/70] Skip tests that run rofiles-fuse if /dev/fuse or /etc/mtab unavailable

[Colin Walters <walters src gnome org>]

commit e1ce859368b41c863fe096df84f1ff33e90d725f
Author: Simon McVittie <smcv debian org>
Date:   Thu Mar 31 13:44:27 2016 +0100

    Skip tests that run rofiles-fuse if /dev/fuse or /etc/mtab unavailable
    
    Signed-off-by: Simon McVittie <smcv debian org>
    
    Closes: #232
    Approved by: cgwalters

 tests/libtest.sh               |   17 +++++++++++++++++
 tests/test-demo-buildsystem.sh |    6 +-----
 tests/test-rofiles-fuse.sh     |    6 +-----
 3 files changed, 19 insertions(+), 10 deletions(-)
---
diff --git a/tests/libtest.sh b/tests/libtest.sh
index 21de2e8..3e4c4bd 100755
--- a/tests/libtest.sh
+++ b/tests/libtest.sh
@@ -332,3 +332,20 @@ skip_without_user_xattrs () {
         exit 0
     fi
 }
+
+skip_without_fuse () {
+    if ! fusermount --version >/dev/null 2>&1; then
+        echo "1..0 # SKIP no fusermount"
+        exit 0
+    fi
+
+    if ! [ -w /dev/fuse ]; then
+        echo "1..0 # SKIP no write access to /dev/fuse"
+        exit 0
+    fi
+
+    if ! [ -e /etc/mtab ]; then
+        echo "1..0 # SKIP no /etc/mtab"
+        exit 0
+    fi
+}
diff --git a/tests/test-demo-buildsystem.sh b/tests/test-demo-buildsystem.sh
index bffa59c..97915f9 100755
--- a/tests/test-demo-buildsystem.sh
+++ b/tests/test-demo-buildsystem.sh
@@ -19,13 +19,9 @@
 
 set -euo pipefail
 
-if ! fusermount --version >/dev/null 2>&1; then
-    echo "1..0 # SKIP no fusermount"
-    exit 0
-fi
-
 . $(dirname $0)/libtest.sh
 
+skip_without_fuse
 skip_without_user_xattrs
 
 echo "1..1"
diff --git a/tests/test-rofiles-fuse.sh b/tests/test-rofiles-fuse.sh
index ba45959..d021df0 100755
--- a/tests/test-rofiles-fuse.sh
+++ b/tests/test-rofiles-fuse.sh
@@ -19,13 +19,9 @@
 
 set -euo pipefail
 
-if ! fusermount --version >/dev/null 2>&1; then
-    echo "1..0 # SKIP no fusermount"
-    exit 0
-fi
-
 . $(dirname $0)/libtest.sh
 
+skip_without_fuse
 skip_without_user_xattrs
 
 setup_test_repository "bare-user"