#!/usr/bin/python

# Copyright 2003 Dave Abrahams
# Copyright 2002, 2003, 2005, 2006 Vladimir Prus
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)

import BoostBuild

t = BoostBuild.Tester()

t.set_tree("dependency-test")

t.run_build_system()

# Check that main target 'c' was able to find 'x.h' from 'a's dependency graph.
t.expect_addition("bin/$toolset/debug/c.exe")

# Check handling of first level includes.

# Both 'a' and 'b' include "a.h" and should be updated.
t.touch("a.h")
t.run_build_system()

t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.expect_touch("bin/$toolset/debug/b.exe")
t.expect_touch("bin/$toolset/debug/b.obj")
# Now, <dependency> does not add a dependency. It sound weird, but is
# intentional. Need to rename <dependency> eventually.
#t.expect_touch("bin/$toolset/debug/main-target-c/c.exe")
t.ignore("*.tds")
t.expect_nothing_more()

# Only 'a' include <a.h> and should be updated.
t.touch("src1/a.h")
t.run_build_system()

t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.ignore("*.tds")
t.expect_nothing_more()

# "src/a.h" includes "b.h" (in the same dir).
t.touch("src1/b.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.exe")
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")
t.ignore("*.tds")
t.expect_nothing_more()

# Included by "src/b.h". We had a bug: file included via "", like "b.h" is in
# this case was not scanned at all.
t.touch("src1/c.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.exe")

t.touch("b.h")
t.run_build_system()
t.expect_nothing_more()

# Test dependency on a generated header.
#
# TODO: we have also to check that generated header is found correctly if it is
# different for different subvariants. Lacking any toolset support, this check
# will be implemented later.
t.touch("x.foo")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")

# Check that generated headers are scanned for dependencies as well.
t.touch("src1/z.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/a.obj")
t.expect_touch("bin/$toolset/debug/a_c.obj")

# Regression test: on Windows, <includes> with absolute paths were not
# considered when scanning dependencies.
t.rm(".")

t.write("jamroot.jam", """
path-constant TOP : . ;
exe app : main.cpp : <include>$(TOP)/include ;
""");

t.write("main.cpp", """
#include <dir/header.h>
int main() {}
""")

t.write("include/dir/header.h", "")

t.run_build_system()
t.expect_addition("bin/$toolset/debug/main.obj")

t.touch("include/dir/header.h")
t.run_build_system()
t.expect_touch("bin/$toolset/debug/main.obj")

t.cleanup()