uninstall: try to determine initialization file

uninstall: TIL that `fgrep` is deprecated...

test/install/uninstall.bats

@@ -2,33 +2,37 @@
 
 load ../test_helper
 
-# Determine which config file to use based on OS.
-case $OSTYPE in
-  darwin*)
-    export BASH_IT_CONFIG_FILE=.bash_profile
-    ;;
-  *)
-    export BASH_IT_CONFIG_FILE=.bashrc
-    ;;
-esac
-
 function local_setup {
   setup_test_fixture
 }
 
-@test "uninstall: verify that the uninstall script exists" {
-  assert_file_exist "$BASH_IT/uninstall.sh"
+@test "uninstall: run the uninstall script with existing backup 'bashrc'" {
+  BASH_IT_CONFIG_FILE=.bashrc
+
+  echo "test file content for backup" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak"
+  echo "test file content for original BASH_IT file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+  local md5_bak=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak" | awk '{print $1}')
+
+  run "${BASH_IT?}/uninstall.sh"
+  assert_success
+
+  assert_file_not_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall"
+  assert_file_not_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak"
+  assert_file_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+
+  local md5_conf=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE" | awk '{print $1}')
+
+  assert_equal "$md5_bak" "$md5_conf"
 }
 
-@test "uninstall: run the uninstall script with an existing backup file" {
-  cd "$BASH_IT"
+@test "uninstall: run the uninstall script with existing backup 'bash_profile'" {
+  BASH_IT_CONFIG_FILE=.bash_profile
 
   echo "test file content for backup" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak"
-  echo "test file content for original file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+  echo "test file content for original BASH_IT file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
   local md5_bak=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak" | awk '{print $1}')
 
-  ./uninstall.sh
-
+  run "${BASH_IT?}/uninstall.sh"
   assert_success
 
   assert_file_not_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall"
@@ -40,14 +44,31 @@ function local_setup {
   assert_equal "$md5_bak" "$md5_conf"
 }
 
-@test "uninstall: run the uninstall script without an existing backup file" {
-  cd "$BASH_IT"
+@test "uninstall: run the uninstall script without existing backup 'bashrc" {
+  BASH_IT_CONFIG_FILE=.bashrc
 
-  echo "test file content for original file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+  echo "test file content for original BASH_IT file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
   local md5_orig=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE" | awk '{print $1}')
 
-  ./uninstall.sh
+  run "${BASH_IT?}/uninstall.sh"
+  assert_success
+
+  assert_file_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall"
+  assert_file_not_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak"
+  assert_file_not_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+
+  local md5_uninstall=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall" | awk '{print $1}')
+
+  assert_equal "$md5_orig" "$md5_uninstall"
+}
+
+@test "uninstall: run the uninstall script without existing backup 'bash_profile" {
+  BASH_IT_CONFIG_FILE=.bash_profile
+
+  echo "test file content for original BASH_IT file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+  local md5_orig=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE" | awk '{print $1}')
 
+  run "${BASH_IT?}/uninstall.sh"
   assert_success
 
   assert_file_exist "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall"

uninstall.sh

@@ -5,12 +5,30 @@
 
 : "${BASH_IT:=${HOME?}/.bash_it}"
 
-CONFIG_FILE=".bashrc"
-if [[ ! -e ~/.bashrc && -e ~/.bash_profile ]]; then
-	# legacy Mac or WSL or just no backup file
+if [[ ! -e ~/.bashrc && ! -e ~/.bash_profile && ! -e ~/.bashrc.bak && ! -e ~/.bash_profile.bak ]]; then
+	echo "We can't locate your configuration files, so we can't uninstall..."
+	return
+elif grep -F -q -- BASH_IT ~/.bashrc && grep -F -q -- BASH_IT ~/.bash_profile; then
+	echo "We can't figure out if Bash-it is loaded from ~/.bashrc or ~/.bash_profile..."
+	return
+elif grep -F -q -- BASH_IT ~/.bashrc || [[ -e ~/.bashrc.bak && ! -e ~/.bashrc ]]; then
+	CONFIG_FILE=".bashrc"
+elif grep -F -q -- BASH_IT ~/.bash_profile || [[ -e ~/.bash_profile.bak && ! -e ~/.bash_profile ]]; then
 	CONFIG_FILE=".bash_profile"
+else
+	echo "Bash-it does not appear to be installed."
+	return
 fi
 
+# possible states:
+# - both .bash* /and/ .bash*.bak, /and/ both config reference `$BASH_IT`: no solution
+# - both config and bak, but only one references `$BASH_IT`: that one
+# - both config, only one bak, but other references `$BASH_IT`: the other one?
+# - both config, no bak, with `$BASH_IT` reference: that one
+# - one config, no bak, but no `$BASH_IT` reference: wut
+# - no config, with bak, with `$BASH_IT`: re-create???
+# - no config, no bak: nothing.
+
 BACKUP_FILE=$CONFIG_FILE.bak
 
 if [[ ! -e "${HOME?}/$BACKUP_FILE" ]]; then