1 files changed, 142 insertions, 0 deletions
diff --git a/src/boost/tools/build/test/feature_relevant.py b/src/boost/tools/build/test/feature_relevant.py
new file mode 100644
index 000000000..a6e20aafc
--- /dev/null
+++ b/src/boost/tools/build/test/feature_relevant.py
@@ -0,0 +1,142 @@
+#!/usr/bin/python
+
+# Copyright 2018 Steven Watanabe
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at
+# https://www.bfgroup.xyz/b2/LICENSE.txt)
+
+# Tests the <relevant> feature
+
+import BoostBuild
+
+t = BoostBuild.Tester(use_test_config=False)
+
+t.write("xxx.jam", """
+import type ;
+import feature : feature ;
+import toolset : flags ;
+import generators ;
+type.register XXX : xxx ;
+type.register YYY : yyy ;
+feature xxxflags : : free ;
+generators.register-standard xxx.run : YYY : XXX ;
+# xxxflags is relevant because it is used by flags
+flags xxx.run OPTIONS : <xxxflags> ;
+actions run
+{
+    echo okay > $(<)
+}
+""")
+
+t.write("zzz.jam", """
+import xxx ;
+import type ;
+import feature : feature ;
+import generators ;
+type.register ZZZ : zzz ;
+feature zzz.enabled : off on : propagated ;
+# zzz.enabled is relevant because it is used in the generator's
+# requirements
+generators.register-standard zzz.run : XXX : ZZZ : <zzz.enabled>on ;
+actions run
+{
+    echo okay > $(<)
+}
+""")
+
+t.write("aaa.jam", """
+import zzz ;
+import type ;
+import feature : feature ;
+import generators ;
+import toolset : flags ;
+type.register AAA : aaa ;
+feature aaaflags : : free ;
+generators.register-standard aaa.run : ZZZ : AAA ;
+flags aaa.run OPTIONS : <aaaflags> ;
+actions run
+{
+    echo okay > $(<)
+}
+""")
+
+t.write("Jamroot.jam", """
+import xxx ;
+import zzz ;
+import aaa ;
+import feature : feature ;
+
+# f1 is relevant, because it is composite and <xxxflags> is relevant
+feature f1 : n y : composite propagated ;
+feature.compose <f1>y : <xxxflags>-no1 ;
+# f2 is relevant, because it is used in a conditional
+feature f2 : n y : propagated ;
+# f3 is relevant, because it is used to choose the target alternative
+feature f3 : n y : propagated ;
+# f4 is relevant, because it is marked as such explicitly
+feature f4 : n y : propagated ;
+# f5 is relevant because of the conditional usage-requirements
+feature f5 : n y : propagated ;
+# f6 is relevant because the indirect conditional indicates so
+feature f6 : n y : propagated ;
+# f7 is relevant because the icond7 says so
+feature f7 : n y : propagated ;
+
+# The same as f[n], except not propagated
+feature g1 : n y : composite ;
+feature.compose <g1>y : <xxxflags>-no1 ;
+feature g2 : n y ;
+feature g3 : n y ;
+feature g4 : n y ;
+feature g5 : n y ;
+feature g6 : n y ;
+feature g7 : n y ;
+
+project : default-build
+    <f1>y <f2>y <f3>y <f4>y <f5>y <f6>y <f7>y
+    <g1>y <g2>y <g3>y <g4>y <g5>y <g6>y <g7>y <zzz.enabled>on ;
+
+rule icond6 ( properties * )
+{
+    local result ;
+    if <f6>y in $(properties) || <g6>y in $(properties)
+    {
+        result += <xxxflags>-yes6 ;
+    }
+    return $(result)
+        <relevant>xxxflags:<relevant>f6
+        <relevant>xxxflags:<relevant>g6 ;
+}
+
+rule icond7 ( properties * )
+{
+    local result ;
+    if <f7>y in $(properties) || <g7>y in $(properties)
+    {
+        result += <aaaflags>-yes7 ;
+    }
+    return $(result)
+        <relevant>aaaflags:<relevant>f7
+        <relevant>aaaflags:<relevant>g7 ;
+}
+
+zzz out : in.yyy
+  : <f2>y:<xxxflags>-no2 <g2>y:<xxxflags>-no2 <relevant>f4 <relevant>g4
+    <conditional>@icond6
+  :
+  : <f5>y:<aaaflags>-yes5 <g5>y:<aaaflags>-yes5 <conditional>@icond7
+  ;
+alias out : : <f3>n ;
+alias out : : <g3>n ;
+# Features that are relevant for out are also relevant for check-propagate
+aaa check-propagate : out ;
+""")
+
+t.write("in.yyy", "")
+
+t.run_build_system()
+t.expect_addition("bin/f1-y/f2-y/f3-y/f4-y/f6-y/g1-y/g2-y/g3-y/g4-y/g6-y/out.xxx")
+t.expect_addition("bin/f1-y/f2-y/f3-y/f4-y/f6-y/g1-y/g2-y/g3-y/g4-y/g6-y/zzz.enabled-on/out.zzz")
+t.expect_addition("bin/f1-y/f2-y/f3-y/f4-y/f5-y/f6-y/f7-y/zzz.enabled-on/check-propagate.aaa")
+
+t.cleanup()