Fix nologin_ignored tests for rules using create_local_interactive_us…

…ers_object

The solution deduplicates most of the code to test/shared/accounts_common.sh,
as proposed in PR review.

linux_os/guide/system/accounts/accounts-session/accounts_user_dot_group_ownership/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-touch /home/$USER/.bashrc
-chgrp 10005 /home/$USER/.bashrc
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "touch /home/\$user/.bashrc; chgrp 10005 /home/\$user/.bashrc"

linux_os/guide/system/accounts/accounts-session/accounts_user_dot_user_ownership/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-touch /home/$USER/.bashrc
-chown 10005 /home/$USER/.bashrc
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "touch /home/\$user/.bashrc; chown 10005 /home/\$user/.bashrc"
+

linux_os/guide/system/accounts/accounts-session/accounts_user_interactive_home_directory_exists/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -M -s /sbin/nologin $USER
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "rm -rf /home/\$user"

linux_os/guide/system/accounts/accounts-session/accounts_users_home_files_groupownership/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-echo "$USER" > /home/$USER/$USER.txt
-chgrp 10005 /home/$USER/$USER.txt
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "echo \$user > /home/\$user/\$user.txt; chgrp 10005 /home/\$user/\$user.txt"

linux_os/guide/system/accounts/accounts-session/accounts_users_home_files_ownership/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-echo "$USER" > /home/$USER/$USER.txt
-chown 10005 /home/$USER/$USER.txt
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "echo \$user > /home/\$user/\$user.txt; chown 10005 /home/\$user/\$user.txt"

linux_os/guide/system/accounts/accounts-session/accounts_users_home_files_permissions/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-echo "$USER" > /home/$USER/$USER.txt
-chmod -Rf 700 /home/$USER/.*
-chmod -f o+r /home/$USER/$USER.txt
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "echo \$user > /home/\$user/\$user.txt; chmod -Rf 700 /home/\$user/.*; chmod -f o+r /home/\$user/\$user.txt"

linux_os/guide/system/accounts/accounts-session/file_groupownership_home_directories/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-chgrp 10005 /home/$USER
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "chgrp 10005 /home/\$user"

linux_os/guide/system/accounts/accounts-session/file_ownership_home_directories/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-chown 10005 /home/$USER
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "chown 10005 /home/\$user"

linux_os/guide/system/accounts/accounts-session/file_permissions_home_directories/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-chmod 755 /home/$USER
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "chmod 755 /home/\$user"

linux_os/guide/system/accounts/accounts-session/user_umask/accounts_umask_interactive_users/tests/interactive_user_nologin_ignored.pass.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
-USER="cac_user"
-useradd -m -s /sbin/nologin $USER
-echo "umask 022" >> /home/$USER/.bashrc
+. "$SHARED/accounts_common.sh"
+
+run_foreach_noninteractive_shell_account "echo 'umask 022' >> /home/\$user/.bashrc"

tests/shared/accounts_common.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# for each noninteractive shell, create user account
+# and eval ommands which are passed in as function arguments
+function run_foreach_noninteractive_shell_account {
+  for shell in "/sbin/nologin" \
+               "/usr/sbin/nologin" \
+               "/bin/false" \
+               "/usr/bin/false"; do
+
+    user=cac_user${shell//\//_}
+    useradd -m -s $shell $user
+
+    eval "$*"
+  done
+}