Added test cases for uninstall script

test/install/uninstall.bats

@@ -0,0 +1,78 @@
+#!/usr/bin/env bats
+
+load ../test_helper
+load ../../lib/composure
+
+# 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 {
+  mkdir -p $BASH_IT
+  lib_directory="$(cd "$(dirname "$0")" && pwd)"
+  cp -r $lib_directory/../../* $BASH_IT/
+
+  # Don't pollute the user's actual $HOME directory
+  # Use a test home directory instead
+  export BASH_IT_TEST_CURRENT_HOME="${HOME}"
+  export BASH_IT_TEST_HOME="$(cd "${BASH_IT}/.." && pwd)/BASH_IT_TEST_HOME"
+  mkdir -p "${BASH_IT_TEST_HOME}"
+  export HOME="${BASH_IT_TEST_HOME}"
+}
+
+function local_teardown {
+  export HOME="${BASH_IT_TEST_CURRENT_HOME}"
+
+  rm -rf "${BASH_IT_TEST_HOME}"
+
+  assert_equal "${BASH_IT_TEST_CURRENT_HOME}" "${HOME}"
+}
+
+@test "uninstall: verify that the uninstall script exists" {
+  assert [ -e "$BASH_IT/uninstall.sh" ]
+}
+
+@test "uninstall: run the uninstall script with an existing backup file" {
+  cd "$BASH_IT"
+
+  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"
+  local md5_bak=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak" | awk '{print $1}')
+
+  ./uninstall.sh
+
+  assert_success
+
+  assert [ ! -e "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall" ]
+  assert [ ! -e "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak" ]
+  assert [ -e "$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" "$md5_conf"
+}
+
+@test "uninstall: run the uninstall script without an existing backup file" {
+  cd "$BASH_IT"
+
+  echo "test file content for original file" > "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE"
+  local md5_orig=$(md5sum "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE" | awk '{print $1}')
+
+  ./uninstall.sh
+
+  assert_success
+
+  assert [ -e "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.uninstall" ]
+  assert [ ! -e "$BASH_IT_TEST_HOME/$BASH_IT_CONFIG_FILE.bak" ]
+  assert [ ! -e "$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"
+}