Allow for overriding build_command

lib/jsbundling/tasks.rb

@@ -2,6 +2,8 @@ module Jsbundling
   module Tasks
     extend self
 
+    attr_writer :build_command
+
     def install_command
       case tool
       when :bun then "bun install"
@@ -13,6 +15,10 @@ def install_command
     end
 
     def build_command
+      if @build_command
+        return @build_command
+      end
+
       case tool
       when :bun then "bun run build"
       when :yarn then "yarn build"

test/tasks_test.rb

@@ -0,0 +1,15 @@
+require "test_helper"
+require "jsbundling/tasks"
+
+class TasksTest < ActiveSupport::TestCase
+  test "override build_command" do
+    original_build_command = Jsbundling::Tasks.build_command
+    Jsbundling::Tasks.build_command = "hello there"
+    assert_equal("hello there", Jsbundling::Tasks.build_command)
+
+    Jsbundling::Tasks.build_command = nil
+    assert_equal(original_build_command, Jsbundling::Tasks.build_command)
+  ensure
+    Jsbundling::Tasks.build_command = nil
+  end
+end