test/system: Add tests for failures for 'enter'

https://github.com/containers/toolbox/pull/915

test/system/105-enter.bats

@@ -0,0 +1,55 @@
+#!/usr/bin/env bats
+
+load 'libs/bats-support/load'
+load 'libs/bats-assert/load'
+load 'libs/helpers'
+
+setup() {
+  check_xdg_runtime_dir
+  cleanup_containers
+}
+
+teardown() {
+  cleanup_containers
+}
+
+@test "enter: Try to enter the default container with no containers created" {
+  run $TOOLBOX enter <<< "n"
+
+  assert_success
+  assert_line --index 0 "No toolbox containers found. Create now? [y/N] A container can be created later with the 'create' command."
+  assert_line --index 1 "Run 'toolbox --help' for usage."
+}
+
+@test "enter: Try to enter the default container with more than 1 other containers present" {
+  local default_container_name="$(get_system_id)-toolbox-$(get_system_version)"
+
+  create_container first
+  create_container second
+
+  run $TOOLBOX enter
+
+  assert_failure
+  assert_line --index 0 "Error: container $default_container_name not found"
+  assert_line --index 1 "Use the '--container' option to select a toolbox."
+  assert_line --index 2 "Run 'toolbox --help' for usage."
+}
+
+@test "enter: Try to enter a specific container with no containers created " {
+  run $TOOLBOX enter wrong-container <<< "n"
+
+  assert_success
+  assert_line --index 0 "No toolbox containers found. Create now? [y/N] A container can be created later with the 'create' command."
+  assert_line --index 1 "Run 'toolbox --help' for usage."
+}
+
+@test "enter: Try to enter a specifc non-existent container with other containers present" {
+  create_container other-container
+
+  run $TOOLBOX enter wrong-container
+
+  assert_failure
+  assert_line --index 0 "Error: container wrong-container not found"
+  assert_line --index 1 "Use the '--container' option to select a toolbox."
+  assert_line --index 2 "Run 'toolbox --help' for usage."
+}