diff --git a/README.md b/README.md
index f1d24ec..125ce70 100644
--- a/README.md
+++ b/README.md
@@ -226,10 +226,8 @@ reverse_array() {
     # Usage: reverse_array "array"
     #        reverse_array 1 2 3 4 5 6
     shopt -s extdebug
-    f()(printf '%s ' "${BASH_ARGV[@]}"); f "$@"
+    f()(printf '%s\n' "${BASH_ARGV[@]}"); f "$@"
     shopt -u extdebug
-
-    printf '\n'
 }
 ```
 
diff --git a/test.sh b/test.sh
index 0971ee9..a5d8ad7 100755
--- a/test.sh
+++ b/test.sh
@@ -27,11 +27,36 @@ test_trim_quotes() {
     assert_equals "$result" "test string"
 }
 
+test_lstrip() {
+    result="$(lstrip "!:IHello" "!:I")"
+    assert_equals "$result" "Hello"
+}
+
+test_rstrip() {
+    result="$(rstrip "Hello!:I" "!:I")"
+    assert_equals "$result" "Hello"
+}
+
+test_reverse_array() {
+    IFS=$'\n' read -d "" -ra result < <(reverse_array 1 2 3 4 5)
+    assert_equals "${result[*]}" "5 4 3 2 1"
+}
+
+test_remove_array_dups() {
+    IFS=$'\n' read -d "" -ra result < <(remove_array_dups 1 1 2 2 3 3 4 5)
+    assert_equals "${result[*]}" "1 2 3 4 5"
+}
+
+test_cycle() {
+    arr=(a b c d)
+    result="$(cycle; cycle; cycle)"
+    assert_equals "$result" "a b c "
+}
+
 assert_equals() {
-    # Test equality.
     local status
     [[ "$1" == "$2" ]] && status="✔"
-    printf '%s\n' "  ${status:-✖} : ${FUNCNAME[1]}"
+    printf '%s\n' "  ${status:-✖} : ${FUNCNAME[1]/test_}"
     [[ "$1" == "$2" ]] || { :>/tmp/err; return 1; } && return 0
 }
 
@@ -43,9 +68,13 @@ main() {
     test_lower
     test_upper
     test_trim_quotes
+    test_lstrip
+    test_rstrip
+    test_reverse_array
+    test_remove_array_dups
+    test_cycle
 
     [[ -f /tmp/err ]] || exit 0 && { rm /tmp/err; exit 1; }
 }
 
 main "$@"
-