scons_gd/scons/test/Scanner/scan-once.py
2022-10-15 16:06:26 +02:00

101 lines
2.8 KiB
Python

#!/usr/bin/env python
#
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
"""
Verify that Scanners are called just once.
"""
import TestSCons
test = TestSCons.TestSCons()
test.write('SConstruct', r"""
import os.path
def scan(node, env, envkey, arg):
print('XScanner: node = '+ os.path.split(str(node))[1])
return []
def exists_check(node, env):
return os.path.exists(str(node))
XScanner = Scanner(name = 'XScanner',
function = scan,
argument = None,
scan_check = exists_check,
skeys = ['.x'])
def echo(env, target, source):
t = os.path.split(str(target[0]))[1]
s = os.path.split(str(source[0]))[1]
print('create %s from %s' % (t, s))
Echo = Builder(action = Action(echo, None),
src_suffix = '.x',
suffix = '.x')
env = Environment(BUILDERS = {'Echo':Echo}, SCANNERS = [XScanner])
f1 = env.Echo(source=['file1'], target=['file2'])
f2 = env.Echo(source=['file2'], target=['file3'])
f3 = env.Echo(source=['file3'], target=['file4'])
""")
test.write('file1.x', 'file1.x\n')
test.run(stdout = test.wrap_stdout("""\
XScanner: node = file1.x
create file2.x from file1.x
create file3.x from file2.x
create file4.x from file3.x
"""))
test.write('file2.x', 'file2.x\n')
test.run(stdout = test.wrap_stdout("""\
XScanner: node = file1.x
XScanner: node = file2.x
create file3.x from file2.x
create file4.x from file3.x
"""))
test.write('file3.x', 'file3.x\n')
test.run(stdout = test.wrap_stdout("""\
XScanner: node = file1.x
XScanner: node = file2.x
XScanner: node = file3.x
create file4.x from file3.x
"""))
test.pass_test()
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