feat(tests): add git submodules update test

scripts/shared/git-submodules.sh

@@ -1,7 +1,8 @@
 #!/bin/bash
 if [ ! "$1" = "compose" ]; then
   git submodule update --init --recursive
-  echo 1
-fi
+  echo "Git submodule update executed."
 
-echo 0
+else 
+  echo "Git submodule update skipped."
+fi

tests/shared.bats

@@ -0,0 +1,18 @@
+#!./tests/bats/bin/bats
+
+setup() {
+    load 'libraries/bats-support/load'
+    load 'libraries/bats-assert/load'
+    source ./tests/mocks.sh
+    apk add git
+}
+
+@test "Add Git Submodules" {
+    run ./scripts/shared/git-submodules.sh
+    assert_output "$ADD_GIT_SUBMODULE_EXECUTED"
+}
+
+@test "Skip Git Submodules" {
+    run ./scripts/shared/git-submodules.sh compose
+    assert_output "$ADD_GIT_SUBMODULE_SKIPPED"
+}