From 658b73e4deb4353ccab01f889edff85e3f350955 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 17 Feb 2019 22:20:51 -0500
Subject: [PATCH] add build test for a builder waiting on another builder

---
 .../simple/builder_wait_for_builder.rb        | 23 +++++++++++++++++++
 spec/build_tests_spec.rb                      | 10 ++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 build_tests/simple/builder_wait_for_builder.rb

diff --git a/build_tests/simple/builder_wait_for_builder.rb b/build_tests/simple/builder_wait_for_builder.rb
new file mode 100644
index 0000000..911e98e
--- /dev/null
+++ b/build_tests/simple/builder_wait_for_builder.rb
@@ -0,0 +1,23 @@
+class MyObject < Rscons::Builder
+  def run(options)
+    if @builder
+      if File.exists?(@target)
+        true
+      else
+        false
+      end
+    else
+      @env.print_builder_run_message("#{name} #{@target}", nil)
+      @builder = @env.Object(@target, @sources, @vars)
+      wait_for(@builder)
+    end
+  end
+end
+
+build do
+  Environment.new do |env|
+    env.add_builder(MyObject)
+    env.MyObject("simple.o", "simple.c")
+    env.Program("simple.exe", "simple.o")
+  end
+end
diff --git a/spec/build_tests_spec.rb b/spec/build_tests_spec.rb
index 6900663..170a49f 100644
--- a/spec/build_tests_spec.rb
+++ b/spec/build_tests_spec.rb
@@ -350,6 +350,16 @@ EOF
     expect(File.exists?("foo")).to be_truthy
   end
 
+  it 'supports a Builder waiting for another Builder' do
+    test_dir "simple"
+    result = run_rscons(rsconscript: "builder_wait_for_builder.rb")
+    expect(result.stderr).to eq ""
+    expect(result.status).to eq 0
+    expect(lines(result.stdout)).to include "MyObject simple.o"
+    expect(File.exists?("simple.o")).to be_truthy
+    expect(File.exists?("simple.exe")).to be_truthy
+  end
+
   it 'allows cloning Environment objects' do
     test_dir('clone_env')
     result = run_rscons