test/local: split test.sh into many files

16 files changed, 482 insertions, 450 deletions

diff --git a/Makefile b/Makefile
index 24be841..b9c6cb2 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ test/all: test/local test/docker
 
 .PHONY: test/local
 test/local:
-	./test/local/test.sh
+	./test/local/main.sh
 
 # This is deliberately excluded from test/all, because it's quite destructive.
 .PHONY: test/linux-home
diff --git a/test/local/lib/common.sh b/test/local/lib/common.sh
new file mode 100644
index 0000000..9179376
--- /dev/null
+++ b/test/local/lib/common.sh
@@ -0,0 +1,137 @@
+# Copyright (c) 2026 Egor Tensin <egor@tensin.name>
+# This file is part of the "config-links" project.
+# For details, see https://github.com/egor-tensin/config-links
+# Distributed under the MIT License.
+
+root_dir=
+
+src_dir_name='src'
+dest_dir_name='dest'
+alt_dest_dir_name='alt_dest'
+
+src_dir_path="$script_dir/dirs/$src_dir_name"
+dest_dir_path="$script_dir/dirs/$dest_dir_name"
+
+test_root_dir=
+test_src_dir=
+test_dest_dir=
+test_alt_dest_dir=
+
+new_test() {
+    root_dir="$( git -C "$script_dir" rev-parse --show-toplevel )"
+
+    test_root_dir="$( mktemp -d )"
+    # mktemp returns /var/..., which is actually in /private/var/... on macOS.
+    test_root_dir="$( readlink -e -- "$test_root_dir" )"
+
+    test_src_dir="$test_root_dir/$src_dir_name"
+    test_dest_dir="$test_root_dir/$dest_dir_name"
+    test_alt_dest_dir="$test_root_dir/$alt_dest_dir_name"
+
+    echo "Root directory: $test_root_dir"
+    echo "Shared directory: $test_src_dir"
+    echo "%DEST% directory: $test_dest_dir"
+    echo "%ALT_DEST% directory: $test_alt_dest_dir"
+
+    cp -r -- "$src_dir_path" "$test_src_dir"
+    cp -r -- "$dest_dir_path" "$test_dest_dir"
+    cp -r -- "$dest_dir_path" "$test_alt_dest_dir"
+}
+
+new_test_symlink() {
+    new_test
+
+    # Create a stupid symlink.
+    ln -s -- 'bar/3.txt' "$test_src_dir/%DEST%/3_copy.txt"
+}
+
+new_test_dir_symlink() {
+    new_test "${FUNCNAME[1]}"
+
+    # Files will get symlinks in the directory pointed to by $DEST, as well as
+    # by $ALT_DEST.
+    ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
+}
+
+test_cleanup_default() {
+    [ -n "$test_root_dir" ] && rm -rf -- "$test_root_dir"
+}
+
+call_bin_script() {
+    echo
+    echo -n 'Executing script:'
+
+    printf -- ' %q' "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
+    printf -- '\n'
+
+    echo
+    DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
+}
+
+call_update() {
+    call_bin_script "$root_dir/bin/links-update" "$@"
+}
+
+call_remove() {
+    call_bin_script "$root_dir/bin/links-remove"
+}
+
+call_chmod() {
+    call_bin_script "$root_dir/bin/links-chmod" "$@"
+}
+
+verify_output() {
+    if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
+        echo "usage: ${FUNCNAME[0]} EXPECTED_OUTPUT [DEST_DIR]" >&2
+        return 1
+    fi
+
+    local expected_output="$1"
+    echo
+    echo 'Expected directory structure:'
+    echo "$expected_output"
+
+    local dest_dir="$test_dest_dir"
+    [ "$#" -ge 2 ] && dest_dir="$2"
+
+    local actual_output
+    actual_output="$( find "$dest_dir" -printf '%h/%f->%l\n' | sort )"
+    echo
+    echo 'Actual directory structure:'
+    echo "$actual_output"
+    echo
+
+    if [ "$actual_output" = "$expected_output" ]; then
+        echo "... They match!"
+    else
+        echo "... The actual directory structure does not match the expected directory structure!" >&2
+        return 1
+    fi
+}
+
+verify_mode() {
+    if [ "$#" -ne 2 ]; then
+        echo "usage: ${FUNCNAME[0]} EXPECTED_MODE FILE" >&2
+        return 1
+    fi
+
+    local expected_mode="$1"
+    local path="$2"
+
+    echo
+    echo "Checking permissions for file: $path"
+    echo "Expected mode: $expected_mode"
+
+    local actual_mode
+    actual_mode="$( stat -c '%a' -- "$path" )"
+    actual_mode="0$actual_mode"
+
+    echo "Actual mode: $actual_mode"
+
+    if [ "$actual_mode" = "$expected_mode" ]; then
+        echo "... They match!"
+    else
+        echo "... They don't match."
+        return 1
+    fi
+}
diff --git a/test/local/main.sh b/test/local/main.sh
new file mode 100755
index 0000000..cba7ab7
--- /dev/null
+++ b/test/local/main.sh
@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2026 Egor Tensin <egor@tensin.name>
+# This file is part of the "config-links" project.
+# For details, see https://github.com/egor-tensin/config-links
+# Distributed under the MIT License.
+
+set -o errexit -o nounset -o pipefail
+shopt -s inherit_errexit 2> /dev/null || true
+shopt -s lastpipe
+
+script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
+script_dir="$( cd -- "$script_dir" && pwd )"
+readonly script_dir
+
+declare -a failed_tests=()
+
+run_test_file() {
+    local test_file
+    for test_file; do
+        echo
+        echo ======================================================================
+        echo "Running test: $test_file"
+        echo ======================================================================
+
+        source "$script_dir/lib/common.sh"
+        source "$script_dir/$test_file"
+
+        echo "Should fail? ${test_should_fail:-No}"
+
+        set +e
+        (
+            set -o errexit -o nounset -o pipefail
+            shopt -s inherit_errexit 2> /dev/null || true
+            shopt -s lastpipe
+
+            if [ "$( type -t test_cleanup )" == function ]; then
+                trap test_cleanup EXIT
+            else
+                trap test_cleanup_default EXIT
+            fi
+
+            test_run
+        )
+        local ec="$?"
+        set -e
+
+        if [ "$ec" -eq 0 ] || [ -n "${test_should_fail:+Yes}" ]; then
+            echo ----------------------------------------------------------------------
+            echo "OK: $test_file"
+            echo ----------------------------------------------------------------------
+        else
+            echo ----------------------------------------------------------------------
+            echo "FAIL: $test_file"
+            echo ----------------------------------------------------------------------
+            failed_tests+=("$test_file")
+        fi
+    done
+}
+
+main() {
+    local -a test_files=()
+
+    find "$script_dir" \
+        -mindepth 1 \
+        -maxdepth 1 \
+        -type f \
+        -regex '.*/tst-.*\.sh$' \
+        -regextype posix-basic \
+        -printf '%P\0' |
+        sort -z |
+    while IFS= read -d '' -r test_file; do
+        test_files+=("$test_file")
+    done
+
+    run_test_file ${test_files[@]+"${test_files[@]}"}
+
+    if [ "${#failed_tests[@]}" -gt 0 ]; then
+        echo
+        echo ======================================================================
+        echo "FAILED TESTS:" ${failed_tests[@]+"${failed_tests[@]}"}
+        echo ======================================================================
+        return 1
+    fi
+}
+
+main
diff --git a/test/local/test.sh b/test/local/test.sh
deleted file mode 100755
index 1e8567f..0000000
--- a/test/local/test.sh
+++ /dev/null
@@ -1,449 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit -o nounset -o pipefail
-shopt -s inherit_errexit 2> /dev/null || true
-shopt -s lastpipe
-
-script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
-script_dir="$( cd -- "$script_dir" && pwd )"
-readonly script_dir
-script_name="$( basename -- "${BASH_SOURCE[0]}" )"
-readonly script_name
-
-root_dir="$( git -C "$script_dir" rev-parse --show-toplevel )"
-readonly root_dir
-
-readonly src_dir_name='src'
-readonly dest_dir_name='dest'
-readonly alt_dest_dir_name='alt_dest'
-
-src_dir_path="$script_dir/dirs/$src_dir_name"
-readonly src_dir_path
-dest_dir_path="$script_dir/dirs/$dest_dir_name"
-readonly dest_dir_path
-
-test_root_dir=
-test_src_dir=
-test_dest_dir=
-test_alt_dest_dir=
-
-new_test() {
-    local test_name=
-    [ "${#FUNCNAME[@]}" -gt 1 ] && test_name="${FUNCNAME[1]}"
-    [ "$#" -gt 0 ] && test_name="$1"
-
-    echo
-    echo ======================================================================
-    echo "New test: $test_name"
-
-    test_root_dir="$( mktemp -d )"
-    # mktemp returns /var/..., which is actually in /private/var/... on macOS.
-    test_root_dir="$( readlink -e -- "$test_root_dir" )"
-    test_src_dir="$test_root_dir/$src_dir_name"
-    test_dest_dir="$test_root_dir/$dest_dir_name"
-    test_alt_dest_dir="$test_root_dir/$alt_dest_dir_name"
-
-    echo "Root directory: $test_root_dir"
-    echo "Shared directory: $test_src_dir"
-    echo "%DEST% directory: $test_dest_dir"
-    echo "%ALT_DEST% directory: $test_alt_dest_dir"
-    echo ======================================================================
-
-    cp -r -- "$src_dir_path" "$test_src_dir"
-    cp -r -- "$dest_dir_path" "$test_dest_dir"
-    cp -r -- "$dest_dir_path" "$test_alt_dest_dir"
-}
-
-call_bin_script() {
-    echo
-    echo -n 'Executing script:'
-
-    printf -- ' %q' "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
-    printf -- '\n'
-
-    echo
-    DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
-}
-
-call_update() {
-    call_bin_script "$root_dir/bin/links-update" "$@"
-}
-
-call_remove() {
-    call_bin_script "$root_dir/bin/links-remove"
-}
-
-call_chmod() {
-    call_bin_script "$root_dir/bin/links-chmod" "$@"
-}
-
-verify_output() {
-    if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
-        echo "usage: ${FUNCNAME[0]} EXPECTED_OUTPUT [DEST_DIR]" >&2
-        return 1
-    fi
-
-    local expected_output="$1"
-    echo
-    echo 'Expected directory structure:'
-    echo "$expected_output"
-
-    local dest_dir="$test_dest_dir"
-    [ "$#" -ge 2 ] && dest_dir="$2"
-
-    local actual_output
-    actual_output="$( find "$dest_dir" -printf '%h/%f->%l\n' | sort )"
-    echo
-    echo 'Actual directory structure:'
-    echo "$actual_output"
-    echo
-
-    if [ "$actual_output" = "$expected_output" ]; then
-        echo "... They match!"
-    else
-        echo "... The actual directory structure does not match the expected directory structure!" >&2
-        return 1
-    fi
-}
-
-verify_mode() {
-    if [ "$#" -ne 2 ]; then
-        echo "usage: ${FUNCNAME[0]} EXPECTED_MODE FILE" >&2
-        return 1
-    fi
-
-    local expected_mode="$1"
-    local path="$2"
-
-    echo
-    echo "Checking permissions for file: $path"
-    echo "Expected mode: $expected_mode"
-
-    local actual_mode
-    actual_mode="$( stat -c '%a' -- "$path" )"
-    actual_mode="0$actual_mode"
-
-    echo "Actual mode: $actual_mode"
-
-    if [ "$actual_mode" = "$expected_mode" ]; then
-        echo "... They match!"
-    else
-        echo "... They don't match."
-        return 1
-    fi
-}
-
-test_update_works() {
-    # Basic test to make sure that links-update actually creates the proper
-    # symlinks.
-
-    new_test
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-
-    verify_output "$expected_output"
-}
-
-test_remove_works() {
-    # Basic test to make sure links-remove actually removes the created
-    # symlinks.
-
-    new_test
-    call_update
-    call_remove
-
-    local expected_output="$test_dest_dir->"
-    verify_output "$expected_output"
-}
-
-test_remove_does_not_overwrite_files() {
-    # Check that if a user overwrites a symlink with his own file, links-remove
-    # keeps it.
-
-    new_test
-    call_update
-
-    # Simulate a user overwriting one of the symlinks with his own file.
-    rm -- "$test_dest_dir/bar/3.txt"
-    echo 'User content' > "$test_dest_dir/bar/3.txt"
-
-    call_remove
-
-    # 3.txt must be kept:
-    local expected_output="$test_dest_dir->
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->"
-
-    verify_output "$expected_output"
-}
-
-test_remove_does_not_delete_used_dirs() {
-    # Check that if a user adds a file to a destination directory, it's not
-    # deleted by links-remove.
-
-    new_test
-    call_update
-
-    # User adds his own file to the directory:
-    echo 'User content' > "$test_dest_dir/bar/my-file"
-
-    call_remove
-
-    # bar/ and bar/my-file must be kept:
-    local expected_output="$test_dest_dir->
-$test_dest_dir/bar->
-$test_dest_dir/bar/my-file->"
-
-    verify_output "$expected_output"
-}
-
-new_test_dir_symlink() {
-    new_test "${FUNCNAME[1]}"
-
-    # Files will get symlinks in the directory pointed to by $DEST, as well as
-    # by $ALT_DEST.
-    ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
-}
-
-test_dir_symlink_update_works() {
-    # We can symlink files to multiple directories by creating symlinks inside
-    # --shared-dir.
-
-    new_test_dir_symlink
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-
-    verify_output "$expected_output"
-
-    expected_output="$test_alt_dest_dir->
-$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
-$test_alt_dest_dir/bar->
-$test_alt_dest_dir/bar/3.txt->$test_src_dir/%ALT_DEST%/bar/3.txt
-$test_alt_dest_dir/bar/baz->
-$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt
-$test_alt_dest_dir/foo->
-$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
-
-    verify_output "$expected_output" "$test_alt_dest_dir"
-}
-
-test_dir_symlink_remove_works() {
-    # Test that links-remove works for directory symlinks inside --shared-dir.
-
-    new_test_dir_symlink
-    call_update
-    call_remove
-
-    local expected_output="$test_dest_dir->"
-    verify_output "$expected_output"
-
-    expected_output="$test_alt_dest_dir->"
-    verify_output "$expected_output" "$test_alt_dest_dir"
-}
-
-test_dir_symlink_remove_shared_file() {
-    # If we remove a shared file, both of the symlinks should be removed.
-
-    new_test_dir_symlink
-    call_update
-
-    # Remove a random shared file:
-    rm -- "$test_src_dir/%DEST%/bar/3.txt"
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-
-    verify_output "$expected_output"
-
-    expected_output="$test_alt_dest_dir->
-$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
-$test_alt_dest_dir/bar->
-$test_alt_dest_dir/bar/baz->
-$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt
-$test_alt_dest_dir/foo->
-$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
-
-    verify_output "$expected_output" "$test_alt_dest_dir"
-}
-
-test_dir_symlink_remove_dir_symlink() {
-    # If we remove a directory symlink in --shared-dir, all the symlinks
-    # accessible through this directory symlink should be removed.
-
-    new_test_dir_symlink
-    call_update
-
-    # Remove the directory symlink:
-    rm -- "$test_src_dir/%ALT_DEST%"
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-
-    verify_output "$expected_output"
-
-    expected_output="$test_alt_dest_dir->"
-    verify_output "$expected_output" "$test_alt_dest_dir"
-}
-
-new_test_symlink() {
-    new_test "${FUNCNAME[1]}"
-
-    # Create a stupid symlink.
-    ln -s -- 'bar/3.txt' "$test_src_dir/%DEST%/3_copy.txt"
-}
-
-test_symlink_update_works() {
-    # Shared files can also be symlinks, pointing to something else.
-
-    new_test_symlink
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/3_copy.txt->$test_src_dir/%DEST%/3_copy.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-
-    verify_output "$expected_output"
-
-    echo
-    echo 'Verifying 3_copy.txt (the symlink) is valid...'
-
-    local copy_target
-    copy_target="$( readlink -- "$test_dest_dir/3_copy.txt" )"
-    test "$copy_target" = "$test_src_dir/%DEST%/3_copy.txt"
-
-    local copy_content
-    copy_content="$( cat -- "$test_dest_dir/3_copy.txt" )"
-    test "$copy_content" = '3'
-}
-
-test_symlink_remove_works() {
-    # Verify that links-remove doesn't delete shared symlinks.
-
-    new_test_symlink
-    call_update
-    call_remove
-
-    local expected_output="$test_dest_dir->"
-    verify_output "$expected_output"
-
-    echo
-    echo 'Verifying 3_copy.txt (the shared file) is valid...'
-
-    local copy_target
-    copy_target="$( readlink -e -- "$test_src_dir/%DEST%/3_copy.txt" )"
-    test "$copy_target" = "$test_src_dir/%DEST%/bar/3.txt"
-
-    local copy_content
-    copy_content="$( cat -- "$test_src_dir/%DEST%/3_copy.txt" )"
-    test "$copy_content" = '3'
-}
-
-test_chmod_works() {
-    # Test that links-chmod works.
-
-    new_test
-    call_update
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-    verify_output "$expected_output"
-
-    echo
-    echo 'Verifying 1.txt (the shared file) permissions...'
-
-    verify_mode 0644 "$test_src_dir/%DEST%/1.txt"
-    call_chmod 0600
-    verify_mode 0600 "$test_src_dir/%DEST%/1.txt"
-}
-
-test_update_chmod() {
-    # Test that links-update --mode works.
-
-    new_test
-    local expected_mode='0622'
-    call_update --mode "$expected_mode"
-
-    local expected_output="$test_dest_dir->
-$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
-$test_dest_dir/bar->
-$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
-$test_dest_dir/bar/baz->
-$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
-$test_dest_dir/foo->
-$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
-    verify_output "$expected_output"
-
-    verify_mode "$expected_mode" "$test_src_dir/%DEST%/1.txt"
-}
-
-show_env() {
-    echo
-    echo ======================================================================
-    echo Environment
-    echo ======================================================================
-
-    bash --version
-}
-
-main() {
-    show_env
-
-    test_update_works
-    test_remove_works
-    test_remove_does_not_overwrite_files
-    test_remove_does_not_delete_used_dirs
-
-    test_dir_symlink_update_works
-    test_dir_symlink_remove_works
-    test_dir_symlink_remove_shared_file
-    test_dir_symlink_remove_dir_symlink
-
-    test_symlink_update_works
-    test_symlink_remove_works
-
-    test_chmod_works
-    test_update_chmod
-}
-
-main
diff --git a/test/local/tst-chmod.sh b/test/local/tst-chmod.sh
new file mode 100644
index 0000000..c28c55b
--- /dev/null
+++ b/test/local/tst-chmod.sh
@@ -0,0 +1,23 @@
+test_run() {
+    # Test that links-chmod works.
+
+    new_test
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+    verify_output "$expected_output"
+
+    echo
+    echo 'Verifying 1.txt (the shared file) permissions...'
+
+    verify_mode 0644 "$test_src_dir/%DEST%/1.txt"
+    call_chmod 0600
+    verify_mode 0600 "$test_src_dir/%DEST%/1.txt"
+}
diff --git a/test/local/tst-dir-symlink-delete.sh b/test/local/tst-dir-symlink-delete.sh
new file mode 100644
index 0000000..5d94bce
--- /dev/null
+++ b/test/local/tst-dir-symlink-delete.sh
@@ -0,0 +1,25 @@
+test_run() {
+    # If we remove a directory symlink in --shared-dir, all the symlinks
+    # accessible through this directory symlink should be removed.
+
+    new_test_dir_symlink
+    call_update
+
+    # Remove the directory symlink:
+    rm -- "$test_src_dir/%ALT_DEST%"
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->"
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
diff --git a/test/local/tst-dir-symlink-remove-shared-file.sh b/test/local/tst-dir-symlink-remove-shared-file.sh
new file mode 100644
index 0000000..758874d
--- /dev/null
+++ b/test/local/tst-dir-symlink-remove-shared-file.sh
@@ -0,0 +1,30 @@
+test_run() {
+    # If we remove a shared file, both of the symlinks should be removed.
+
+    new_test_dir_symlink
+    call_update
+
+    # Remove a random shared file:
+    rm -- "$test_src_dir/%DEST%/bar/3.txt"
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->
+$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
+$test_alt_dest_dir/bar->
+$test_alt_dest_dir/bar/baz->
+$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt
+$test_alt_dest_dir/foo->
+$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
+
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
diff --git a/test/local/tst-remove-dir-symlink.sh b/test/local/tst-remove-dir-symlink.sh
new file mode 100644
index 0000000..143541c
--- /dev/null
+++ b/test/local/tst-remove-dir-symlink.sh
@@ -0,0 +1,13 @@
+test_run() {
+    # Test that links-remove works for directory symlinks inside --shared-dir.
+
+    new_test_dir_symlink
+    call_update
+    call_remove
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->"
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
diff --git a/test/local/tst-remove-does-not-delete-user-dirs.sh b/test/local/tst-remove-does-not-delete-user-dirs.sh
new file mode 100644
index 0000000..ef0e609
--- /dev/null
+++ b/test/local/tst-remove-does-not-delete-user-dirs.sh
@@ -0,0 +1,19 @@
+test_run() {
+    # Check that if a user adds a file to a destination directory, it's not
+    # deleted by links-remove.
+
+    new_test
+    call_update
+
+    # User adds his own file to the directory:
+    echo 'User content' > "$test_dest_dir/bar/my-file"
+
+    call_remove
+
+    # bar/ and bar/my-file must be kept:
+    local expected_output="$test_dest_dir->
+$test_dest_dir/bar->
+$test_dest_dir/bar/my-file->"
+
+    verify_output "$expected_output"
+}
diff --git a/test/local/tst-remove-does-not-overwrite-files.sh b/test/local/tst-remove-does-not-overwrite-files.sh
new file mode 100644
index 0000000..cb51eb9
--- /dev/null
+++ b/test/local/tst-remove-does-not-overwrite-files.sh
@@ -0,0 +1,20 @@
+test_run() {
+    # Check that if a user overwrites a symlink with his own file, links-remove
+    # keeps it.
+
+    new_test
+    call_update
+
+    # Simulate a user overwriting one of the symlinks with his own file.
+    rm -- "$test_dest_dir/bar/3.txt"
+    echo 'User content' > "$test_dest_dir/bar/3.txt"
+
+    call_remove
+
+    # 3.txt must be kept:
+    local expected_output="$test_dest_dir->
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->"
+
+    verify_output "$expected_output"
+}
diff --git a/test/local/tst-remove-symlink.sh b/test/local/tst-remove-symlink.sh
new file mode 100644
index 0000000..d9cf788
--- /dev/null
+++ b/test/local/tst-remove-symlink.sh
@@ -0,0 +1,21 @@
+test_run() {
+    # Verify that links-remove doesn't delete shared symlinks.
+
+    new_test_symlink
+    call_update
+    call_remove
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+
+    echo
+    echo 'Verifying 3_copy.txt (the shared file) is valid...'
+
+    local copy_target
+    copy_target="$( readlink -e -- "$test_src_dir/%DEST%/3_copy.txt" )"
+    test "$copy_target" = "$test_src_dir/%DEST%/bar/3.txt"
+
+    local copy_content
+    copy_content="$( cat -- "$test_src_dir/%DEST%/3_copy.txt" )"
+    test "$copy_content" = '3'
+}
diff --git a/test/local/tst-remove.sh b/test/local/tst-remove.sh
new file mode 100644
index 0000000..ebe6197
--- /dev/null
+++ b/test/local/tst-remove.sh
@@ -0,0 +1,11 @@
+test_run() {
+    # Basic test to make sure links-remove actually removes the created
+    # symlinks.
+
+    new_test
+    call_update
+    call_remove
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+}
diff --git a/test/local/tst-update-chmod.sh b/test/local/tst-update-chmod.sh
new file mode 100644
index 0000000..3f83f0f
--- /dev/null
+++ b/test/local/tst-update-chmod.sh
@@ -0,0 +1,19 @@
+test_run() {
+    # Test that links-update --mode works.
+
+    new_test
+    local expected_mode='0622'
+    call_update --mode "$expected_mode"
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+    verify_output "$expected_output"
+
+    verify_mode "$expected_mode" "$test_src_dir/%DEST%/1.txt"
+}
diff --git a/test/local/tst-update-dir-symlink.sh b/test/local/tst-update-dir-symlink.sh
new file mode 100644
index 0000000..003fd3c
--- /dev/null
+++ b/test/local/tst-update-dir-symlink.sh
@@ -0,0 +1,29 @@
+test_run() {
+    # We can symlink files to multiple directories by creating symlinks inside
+    # --shared-dir.
+
+    new_test_dir_symlink
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->
+$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
+$test_alt_dest_dir/bar->
+$test_alt_dest_dir/bar/3.txt->$test_src_dir/%ALT_DEST%/bar/3.txt
+$test_alt_dest_dir/bar/baz->
+$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt
+$test_alt_dest_dir/foo->
+$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
+
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
diff --git a/test/local/tst-update-symlink.sh b/test/local/tst-update-symlink.sh
new file mode 100644
index 0000000..9954b7f
--- /dev/null
+++ b/test/local/tst-update-symlink.sh
@@ -0,0 +1,29 @@
+test_run() {
+    # Shared files can also be symlinks, pointing to something else.
+
+    new_test_symlink
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/3_copy.txt->$test_src_dir/%DEST%/3_copy.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    echo
+    echo 'Verifying 3_copy.txt (the symlink) is valid...'
+
+    local copy_target
+    copy_target="$( readlink -- "$test_dest_dir/3_copy.txt" )"
+    test "$copy_target" = "$test_src_dir/%DEST%/3_copy.txt"
+
+    local copy_content
+    copy_content="$( cat -- "$test_dest_dir/3_copy.txt" )"
+    test "$copy_content" = '3'
+}
diff --git a/test/local/tst-update.sh b/test/local/tst-update.sh
new file mode 100644
index 0000000..644114d
--- /dev/null
+++ b/test/local/tst-update.sh
@@ -0,0 +1,18 @@
+test_run() {
+    # Basic test to make sure that links-update actually creates the proper
+    # symlinks.
+
+    new_test
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
+$test_dest_dir/bar/baz->
+$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+}