tests: Simplify shell exit status negation;

* tests/guix-archive.sh, tests/guix-build-branch.sh, tests/guix-build.sh,
tests/guix-daemon.sh, tests/guix-download.sh, tests/guix-environment.sh,
tests/guix-gc.sh, tests/guix-git-authenticate.sh, tests/guix-graph.sh,
tests/guix-hash.sh, tests/guix-lint.sh, tests/guix-pack-relocatable.sh,
tests/guix-pack.sh, tests/guix-package-aliases.sh, tests/guix-package-net.sh,
tests/guix-package.sh: Use the shell '!' keyword to negate command exit status
in place of 'if ...; then false; else true; fi'

1 files changed, 4 insertions, 8 deletions

diff --git a/tests/guix-download.sh b/tests/guix-download.sh
index 30f55fbe2b..5475d43e60 100644
--- a/tests/guix-download.sh
+++ b/tests/guix-download.sh
@@ -23,14 +23,11 @@
 guix download --version
 
 # Make sure it fails here.
-if guix download http://does.not/exist
-then false; else true; fi
+! guix download http://does.not/exist
 
-if guix download unknown://some/where;
-then false; else true; fi
+! guix download unknown://some/where;
 
-if guix download /does-not-exist
-then false; else true; fi
+! guix download /does-not-exist
 
 # This one should succeed.
 guix download "file://$abs_top_srcdir/README"
@@ -46,5 +43,4 @@ GUIX_DAEMON_SOCKET="/nowhere" guix download -o "$output" \
 cmp "$output" "$abs_top_srcdir/README"
 
 # This one should fail.
-if guix download "file:///does-not-exist" "file://$abs_top_srcdir/README"
-then false; else true; fi
+! guix download "file:///does-not-exist" "file://$abs_top_srcdir/README"