Adds the ability to configure the secret key size generated. Fixes #1847

spec/tasks/gen/secret_key_base_spec.cr

@@ -2,10 +2,18 @@ require "../../spec_helper"
 
 describe Gen::SecretKey do
   it "outputs a new secret key base" do
-    io = IO::Memory.new
+    task = Gen::SecretKey.new
+    task.output = IO::Memory.new
+    task.print_help_or_call(args: [] of String)
 
-    Gen::SecretKey.new.call(io)
+    (task.output.to_s.size >= 32).should be_true
+  end
+
+  it "outputs a larger size when configured" do
+    task = Gen::SecretKey.new
+    task.output = IO::Memory.new
+    task.print_help_or_call(args: ["-n 64"])
 
-    (io.to_s.size >= 32).should be_true
+    (task.output.to_s.size >= 64).should be_true
   end
 end

tasks/gen/secret_key.cr

@@ -3,7 +3,9 @@ require "lucky_task"
 class Gen::SecretKey < LuckyTask::Task
   summary "Generate a new secret key"
 
-  def call(io : IO = STDOUT)
-    io.puts Random::Secure.base64(32)
+  int32 :number, "n random bytes used to encode into base64.", shortcut: "-n", default: 32
+
+  def call
+    output.puts Random::Secure.base64(number)
   end
 end