From 9b920de937b18e59e106ee0a7a5bb313b9be0d0c Mon Sep 17 00:00:00 2001
From: Sean Whitton <spwhitton@spwhitton.name>
Date: Wed, 5 Feb 2020 23:14:00 -0700
Subject: skip some tests if we detect tmpfs device ID issues

Signed-off-by: Sean Whitton <spwhitton@spwhitton.name>
---
 t/21_annex-to-annex.t            |  2 ++
 t/22_annex-to-annex-dropunused.t |  3 +++
 t/lib/t/Util.pm                  | 19 ++++++++++++++++++-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/t/21_annex-to-annex.t b/t/21_annex-to-annex.t
index 2666b4b..9e84388 100755
--- a/t/21_annex-to-annex.t
+++ b/t/21_annex-to-annex.t
@@ -14,6 +14,8 @@ use Capture::Tiny qw(capture_merged);
 use File::Spec::Functions qw(catfile rel2abs);
 use File::chdir;
 
+plan skip_all => "device ID issues" if device_id_issues;
+
 # make sure that `make test` will always use the right version of the
 # script we seek to test
 #
diff --git a/t/22_annex-to-annex-dropunused.t b/t/22_annex-to-annex-dropunused.t
index fd0322a..c8bd47a 100755
--- a/t/22_annex-to-annex-dropunused.t
+++ b/t/22_annex-to-annex-dropunused.t
@@ -8,10 +8,13 @@ use lib 't/lib';
 use Test::More;
 use File::Spec::Functions qw(rel2abs);
 use t::Setup;
+use t::Util;
 use File::chdir;
 use File::Basename qw(dirname);
 use File::Copy qw(copy);
 
+plan skip_all => "device ID issues" if device_id_issues;
+
 # make sure that `make test` will always use the right version of the
 # script we seek to test
 my $a2a    = "annex-to-annex";
diff --git a/t/lib/t/Util.pm b/t/lib/t/Util.pm
index a69ac4c..bb8f59e 100644
--- a/t/lib/t/Util.pm
+++ b/t/lib/t/Util.pm
@@ -6,8 +6,10 @@ use warnings;
 use parent 'Exporter';
 use File::Slurp;
 use File::Spec::Functions qw(rel2abs);
+use File::chdir;
+use File::Temp qw(tempdir);
 
-our @EXPORT = qw( corrupt_annexed_file );
+our @EXPORT = qw( corrupt_annexed_file device_id_issues );
 
 sub corrupt_annexed_file {
     my ($git, $file) = @_;
@@ -20,4 +22,19 @@ sub corrupt_annexed_file {
     append_file $loc, "bazbaz\n";
 }
 
+# on a tmpfs as commonly used with sbuild, the device IDs for files
+# and directories can be different, which will cause annex-to-annex to
+# refuse to hardlink.  we use this sub to skip some tests if we detect
+# that.  possibly annex-to-annex should only look at the device IDs of
+# files (by creating a temporary file inside $dest and looking at the
+# device ID of that)
+sub device_id_issues {
+    local $CWD = tempdir CLEANUP => 1;
+    mkdir "foo";
+    write_file "bar", "bar\n";
+    my $foo_id = (stat "foo")[0];
+    my $bar_id = (stat "bar")[0];
+    return($foo_id != $bar_id);
+}
+
 1;
-- 
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