Add support for custom message formats

tests/test_auto_notify_format.zunit

@@ -0,0 +1,26 @@
+#!/usr/bin/env zunit
+
+@setup {
+    load "../auto-notify.plugin.zsh"
+}
+
+@test 'auto-notify-format no parameters' {
+    run _auto_notify_format "Hello World" "foo" "bar" "baz"
+
+    assert $state equals 0
+    assert "$output" same_as "Hello World"
+}
+
+@test 'auto-notify-format correct formatting 1' {
+    run _auto_notify_format "Command run is - %command (%elapsed seconds)" "zypper up" "10" "0"
+
+    assert $state equals 0
+    assert "$output" same_as "Command run is - zypper up (10 seconds)"
+}
+
+@test 'auto-notify-format correct formatting 2' {
+    run _auto_notify_format "Exit code is %exit_code!" "zypper up" "10" "-101"
+
+    assert $state equals 0
+    assert "$output" same_as "Exit code is -101!"
+}

tests/test_auto_notify_send.zunit

@@ -126,3 +126,17 @@
     assert "$lines[1]" same_as "Unknown platform for sending notifications: Hal9000"
     assert "$lines[2]" same_as "Please post an issue on gitub.com/MichaelAquilina/zsh-auto-notify/issues/"
 }
+
+@test 'auto-notify-send sends custom message' {
+    AUTO_COMMAND="doom -i"
+    AUTO_COMMAND_FULL="doom -i"
+    AUTO_COMMAND_START=11055
+    AUTO_NOTIFY_TITLE="%command has completed in %elapseds yo"
+    AUTO_NOTIFY_BODY="%command exited with code %exit_code"
+
+    run _auto_notify_send
+
+    assert $state equals 0
+    assert "$lines[1]" same_as 'Notification Title: doom -i has completed in 45s yo'
+    assert "$lines[2]" same_as "Notification Body: doom -i exited with code 0"
+}