More tests

tests/install/wscript

@@ -2,17 +2,15 @@
 # encoding: utf-8
 # Thomas Nagy, 2016
 #
-# DESTDIR=/tmp/somedir waf install
-
-def configure(conf):
-	pass
 
+import os
 from waflib import TaskGen, Build, Utils
+
 @TaskGen.feature('ruler')
 @TaskGen.before('process_rule')
 def test(self):
-	if not self.bld.is_install:
-		while self.meths: # cancel everything
+	if not self.bld.is_install or self.bld.is_install == Build.UNINSTALL:
+		while self.meths: # do not generate tasks: the target file may not be there
 			self.meths.pop()
 		return
 
@@ -21,10 +19,34 @@ def test(self):
 	assert tg.install_task.outputs
 	self.source = tg.install_task.outputs
 
-def build(bld):
-	bld.install_as('${PREFIX}/bin/foo', 'wscript', chmod=Utils.O755)
-	bld.symlink_as('${PREFIX}/bin/bar', 'foo')
-	tsk = bld.install_files('${PREFIX}/bin', 'wscript', chmod=Utils.O755, name='cheese')
-	bld(rule='ls -l ${SRC}', always=True, bring_in='cheese', features='ruler')
+def configure(conf):
 
+	tmpdir = conf.bldnode.make_node('tmpdir')
+
+	def build(bld):
+		bld.is_install = env.INSTALL
+		bld.path.make_node('tmpfile').write('test')
+		bld.env.PREFIX = tmpdir.abspath()
+		bld.install_as('${PREFIX}/bin/foo', 'tmpfile', chmod=Utils.O755)
+		bld.symlink_as('${PREFIX}/bin/bar', '../tmpfile')
+		tsk = bld.install_files('${PREFIX}/bin', 'tmpfile', chmod=Utils.O755, name='cheese')
+		bld(rule='ls -l ${SRC}', always=True, bring_in='cheese', features='ruler')
+
+	env = conf.env.derive()
+	env.INSTALL = Build.INSTALL
+	conf.run_build(build_fun=build, msg='building', okmsg='ok', errmsg='eh', env=env)
+	assert tmpdir.exists()
+	assert tmpdir.make_node('bin/foo').exists()
+	assert tmpdir.make_node('bin/tmpfile').abspath()
+	assert tmpdir.make_node('bin/foo').read() == tmpdir.make_node('bin/tmpfile').read()
+	assert os.path.lexists(tmpdir.make_node('bin/bar').abspath())
+	assert os.readlink(tmpdir.make_node('bin/bar').abspath()) == '../tmpfile'
+
+	env.INSTALL = Build.UNINSTALL
+	conf.run_build(build_fun=build, msg='building', okmsg='ok', errmsg='eh', env=env)
+	assert not tmpdir.exists()
+	assert not tmpdir.make_node('bin/foo').exists()
+	assert not tmpdir.make_node('bin/tmpfile').exists()
+	assert not os.path.lexists(tmpdir.make_node('bin/bar').abspath())
+	assert not tmpdir.exists()