Super basic testing framework

default.nix

@@ -169,4 +169,10 @@ in rec {
       mv Isle-* "$out"/bin/isle
     '';
   };
+
+  tests = pkgs.writeShellScript "isle-tests" ''
+    export PATH=$PATH:${appImage}/bin
+    test_dir=${./tests}
+    exec $SHELL $test_dir/entrypoint.sh
+  '';
 }

test.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+$(nix-build --no-out-link -A tests)

tests/00-version.sh

@@ -0,0 +1,2 @@
+version="$(isle version)"
+test "$(echo "$version" | wc -l)" -gt 0

tests/entrypoint.sh

@@ -0,0 +1,27 @@
+set -e
+
+# cd into script's directory
+cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null
+
+tmp="$(mktemp --tmpdir -d isle-tests.XXXXXX)"
+trap 'rm -rf $tmp' EXIT
+
+export TMPDIR="$tmp"
+echo "tmp dir is $TMPDIR"
+
+echo -e '\nrunning all tests...\n'
+
+for file in $(find . -type f -name '*.sh' | grep -v entrypoint.sh | sort -n); do
+    echo "running test $file"
+    if ! $SHELL -e -x "$file" >"$tmp/$file.log" 2>&1; then
+        echo "TEST FAILED"
+        echo "output of test is as follows"
+        echo "------------------------------"
+        cat "$tmp/$file.log"
+        echo "------------------------------"
+        exit 1
+    fi
+done
+
+echo -e '\ntests succeeded!'
+