Fix generators to make sure changes to rule inputs trigger correct rebuilds....

test/rules-rebuild/gyptest-default.py

+#!/usr/bin/env python
+
+"""
+Verifies that a rule that generates multiple outputs rebuilds
+correctly when the inputs change.
+"""
+
+import TestGyp
+
+test = TestGyp.TestGyp()
+
+if test.format == 'msvs':
+  msg = 'TODO:  issue 120:  disabled on MSVS due to test execution problems.\n'
+  test.skip_test(msg)
+
+if test.format == 'xcode':
+  msg = 'TODO:  issue 94:  disabled on Xcode due to rule timing issues.\n'
+  test.skip_test(msg)
+
+test.run_gyp('same_target.gyp', chdir='src')
+
+test.relocate('src', 'relocate/src')
+
+
+test.build('same_target.gyp', chdir='relocate/src')
+
+expect = """\
+Hello from main.c
+Hello from prog1.in!
+Hello from prog2.in!
+"""
+
+test.run_built_executable('program', chdir='relocate/src', stdout=expect)
+
+test.up_to_date('same_target.gyp', 'program', chdir='relocate/src')
+
+
+test.sleep()
+contents = test.read(['relocate', 'src', 'prog1.in'])
+contents = contents.replace('!', ' AGAIN!')
+test.write(['relocate', 'src', 'prog1.in'], contents)
+
+test.build('same_target.gyp', chdir='relocate/src')
+
+expect = """\
+Hello from main.c
+Hello from prog1.in AGAIN!
+Hello from prog2.in!
+"""
+
+test.run_built_executable('program', chdir='relocate/src', stdout=expect)
+
+test.up_to_date('same_target.gyp', 'program', chdir='relocate/src')
+
+
+test.sleep()
+contents = test.read(['relocate', 'src', 'prog2.in'])
+contents = contents.replace('!', ' AGAIN!')
+test.write(['relocate', 'src', 'prog2.in'], contents)
+
+test.build('same_target.gyp', chdir='relocate/src')
+
+expect = """\
+Hello from main.c
+Hello from prog1.in AGAIN!
+Hello from prog2.in AGAIN!
+"""
+
+test.run_built_executable('program', chdir='relocate/src', stdout=expect)
+
+test.up_to_date('same_target.gyp', 'program', chdir='relocate/src')
+
+
+test.pass_test()