improvement: added bats as git submodule

.github/workflows/test.yml

@@ -20,15 +20,12 @@ jobs:
 
       - name: Install bats
         run: |
-          sudo apt-get update -y
-          sudo apt-get install git -y
-          git submodule add https://github.com/bats-core/bats-core.git test/bats
-          git submodule add https://github.com/bats-core/bats-support.git test/test_helper/bats-support
-          git submodule add https://github.com/bats-core/bats-assert.git test/test_helper/bats-assert
+          git submodule init 
+          git submodule update
 
       - name: Run Bats Test
         shell: 'script -q -e -c "bash {0}"' # work around tty issues
         env:
           TERM: linux # fix tput for tty issue work around
         run: |
-          export BATS_LIB_PATH="${PWD}/test":"${PWD}/test/bats":"${PWD}/test/test_helper"; $PWD/test/bats/bin/bats --tap test
+          $PWD/test/bats/bin/bats --tap test

README.md

@@ -201,28 +201,30 @@ This is useful when you do not like page wrapping.
 
 ## Tests
 
-To run the test make sure the following is installed:
+To run the test the following submodules need to be installed as git
+sub modules:
 
 - Install [bats-core](https://github.com/bats-core/bats-core)
 - Install [bats-assert](https://github.com/ztombol/bats-assert)
 - Install [bats-support](https://github.com/ztombol/bats-support)
 
-After this, set the `BATS_LIB_PATH` environment variable to the directories
-where the bats libraries are installed. For example:
+To install these sub modules, run the following commands:
 
-```bash
-export BATS_LIB_PATH=/usr/lib:/usr/lib/bats
+```
+git submodule init
+git submodule update
 ```
 
-For more information, see the [bats-core documentation](https://bats-core.readthedocs.io/en/stable/)
-
-To run the tests, cd to the root of the repository and run:
+After this, you can use the `bats` executable in the root of the repository to
+run the tests. To run all tests, run:
 
 ```bash
-bats test
+./bats test
 ```
 
-where `bats` is the bats-core executable that should be in your path.
+here, `./bats` is a shortcut to `./test/bats/bin/bats`.
+
+For more information, see the [bats-core documentation](https://bats-core.readthedocs.io/en/stable/)
 
 ## Troubleshooting
 

bats

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+# Shortcut to the bats executable at `./test/bats/bin/bats`
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+"$DIR"/test/bats/bin/bats $@

test/cli-options.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 # vim: ft=bash
-bats_load_library bats-assert
-bats_load_library bats-support
+load test_helper/bats-assert/load
+load test_helper/bats-support/load
 load helpers.bash
 
 @test "Run with -h" {

test/fzf-select-option-preview.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 # vim: ft=bash
-bats_load_library bats-assert
-bats_load_library bats-support
+load test_helper/bats-assert/load
+load test_helper/bats-support/load
 load helpers.bash
 
 @test "Run with -h" {

test/fzf-select-option.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 # vim: ft=bash
-bats_load_library bats-assert
-bats_load_library bats-support
+load test_helper/bats-assert/load
+load test_helper/bats-support/load
 load helpers.bash
 
 @test "Run with -h" {

test/help-message.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 # vim: ft=bash
-bats_load_library bats-assert
-bats_load_library bats-support
+load test_helper/bats-assert/load
+load test_helper/bats-support/load
 load helpers.bash
 
 get_temp() {