Adding tests for todo

tests/todo.bats

@@ -0,0 +1,59 @@
+#!/bin/env bats
+
+@test "Testing todo tool" {
+   echo todo
+}
+
+@test "Check for latest version of bash-snippets on update" {
+  run todo update
+  [ "$status" -eq 0 ]
+  [ "$output" = "Bash-Snippets is already the latest version" ]
+}
+
+
+@test "No arguments prints usage instructions" {
+  run todo
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "Todo" ]
+}
+
+@test "The -h option should print usage" {
+  run todo -h
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "Todo" ]
+}
+
+@test "Adding task" {
+  run todo -a First task ever
+  [ "$status" -eq 0 ]
+  result=$( echo $(todo -g) | grep -Eo "01). First task ever" )
+  [ "$result" = "01). First task ever" ]
+}
+
+@test "Getting task" {
+  run todo -g
+  [ "$status" -eq 0 ]
+  result=$( echo $(todo -g) | grep -Eo "01). First task ever" )
+  [ "$result" = "01). First task ever" ]
+}
+
+@test "Removing task" {
+  run todo -r "1"
+  [ "$status" -eq 0 ]
+  result=$( cat ~/.todo/list.txt )
+  echo $result
+  [ "$result" = "" ]
+}
+
+@test "Getting from empty task list" {
+  run todo -g
+  [ "$status" -eq 0 ]
+  [ "$output" = "No tasks found" ]
+}
+
+@test "Get the tools version with -v" {
+  run todo -v
+  [ "$status" -eq 0 ]
+  result=$( echo $(todo -v) | grep -Eo "Version")
+  [ "$result" = "Version" ]
+}