Run each test in a clean directory

test/runner

@@ -12,15 +12,38 @@ try() {
 
 setUp() {
   export TMPDIR="$PWD/.generated"
+  export-repo-root
+  move-to-working-directory
 }
 
 tearDown() {
   [ "${_shunit_test_:=}" = '' ] && return 0
+
+  clean-up-working-directory
+
   if [ "${__shunit_testSuccess:?}" != 0 ]; then
     output-outputs
   fi
 }
 
+export-repo-root() {
+  export REPO_ROOT="$PWD"
+  while ! [[ -d $REPO_ROOT/.git ]]; do
+    export REPO_ROOT=$(dirname $REPO_ROOT)
+  done
+}
+
+move-to-working-directory() {
+  original_dir="$PWD"
+  working_dir=$(mktemp -d)
+  cd $working_dir
+}
+
+clean-up-working-directory() {
+  cd $original_dir
+  rm -rf $working_dir
+}
+
 output-outputs() {
   (
   bold '*******Test failed********'

test/test-help

@@ -4,7 +4,7 @@ testUsageIsShownWhenNoCommandIsSpecified() {
   echo '
   #!/usr/bin/env bash
   ' > go
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go
@@ -16,7 +16,7 @@ testHelpSubcommandCannotBeOverridden() {
   #!/usr/bin/env bash
   ⚡️help() { echo "ah hah hah" ; }
   ' > go
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go help
@@ -28,7 +28,7 @@ testHelpIncludesInvocationInstructions() {
   echo '
   #!/usr/bin/env bash
   ' > $SCRIPT_NAME
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> $SCRIPT_NAME
+  echo "source $REPO_ROOT/⚡️" >> $SCRIPT_NAME
   chmod +x $SCRIPT_NAME
 
   try ./$SCRIPT_NAME help
@@ -43,7 +43,7 @@ testHelpListsAllAvailableLightningCommands() {
   ⚡️baz() { echo "ah hah hah" ; }
   ⚡️potato() { echo "ah hah hah" ; }
   ' > go
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go help
@@ -64,7 +64,7 @@ testHelpLinesFromDefinedCommandsAreShown() {
   }
   ' > go
 
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go
@@ -78,7 +78,7 @@ testHelpDoesNotExecuteFunctionsWithNoHelpLine() {
   ⚡️hello() { echo "Hello, World!" ; }
   ' > go
 
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go
@@ -92,7 +92,7 @@ testLightningShouldNotBeIncludedInSubcommandNames() {
   ⚡️hello() { echo "Hello, World!" ; }
   ' > go
 
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go

test/test-run

@@ -7,7 +7,7 @@ testDefiningALightningFunctionWorks() {
   ⚡️hello() { echo "Hello, World!" ; }
   ' > go
 
-  echo "source $(dirname $BASH_SOURCE)/../⚡️" >> go
+  echo "source $REPO_ROOT/⚡️" >> go
   chmod +x go
 
   try ./go hello