[src/trunk]: src/usr.bin/make/unit-tests make(1): add tests for edge cases in...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c95e1877eda1
branches:  trunk
changeset: 956925:c95e1877eda1
user:      rillig <rillig%NetBSD.org@localhost>
date:      Tue Nov 10 19:36:50 2020 +0000

description:
make(1): add tests for edge cases in parsing conditionals

diffstat:

 usr.bin/make/unit-tests/cond-func.exp |   5 ++++
 usr.bin/make/unit-tests/cond-func.mk  |  40 ++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletions(-)

diffs (68 lines):

diff -r 4e28eb8b4930 -r c95e1877eda1 usr.bin/make/unit-tests/cond-func.exp
--- a/usr.bin/make/unit-tests/cond-func.exp     Tue Nov 10 19:14:11 2020 +0000
+++ b/usr.bin/make/unit-tests/cond-func.exp     Tue Nov 10 19:36:50 2020 +0000
@@ -4,6 +4,11 @@
 make: "cond-func.mk" line 49: Malformed conditional (!defined(A&B))
 make: "cond-func.mk" line 52: warning: Missing closing parenthesis for defined()
 make: "cond-func.mk" line 52: Malformed conditional (!defined(A|B))
+make: "cond-func.mk" line 92: The empty variable is never defined.
+make: "cond-func.mk" line 100: A plain function name is parsed as !empty(...).
+make: "cond-func.mk" line 107: A plain function name is parsed as !empty(...).
+make: "cond-func.mk" line 117: Symbols may start with a function name.
+make: "cond-func.mk" line 122: Symbols may start with a function name.
 make: Fatal errors encountered -- cannot continue
 make: stopped in unit-tests
 exit status 1
diff -r 4e28eb8b4930 -r c95e1877eda1 usr.bin/make/unit-tests/cond-func.mk
--- a/usr.bin/make/unit-tests/cond-func.mk      Tue Nov 10 19:14:11 2020 +0000
+++ b/usr.bin/make/unit-tests/cond-func.mk      Tue Nov 10 19:36:50 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: cond-func.mk,v 1.6 2020/11/08 21:40:13 rillig Exp $
+# $NetBSD: cond-func.mk,v 1.7 2020/11/10 19:36:50 rillig Exp $
 #
 # Tests for those parts of the functions in .if conditions that are common
 # among several functions.
@@ -86,5 +86,43 @@
 .  error
 .endif
 
+.if defined()
+.  error
+.else
+.  info The empty variable is never defined.
+.endif
+
+# The plain word 'defined' is interpreted as '!empty(defined)'.
+# That variable is not defined (yet).
+.if defined
+.  error
+.else
+.  info A plain function name is parsed as !empty(...).
+.endif
+
+# If a variable named 'defined' is actually defined and not empty, the plain
+# symbol 'defined' evaluates to true.
+defined=       non-empty
+.if defined
+.  info A plain function name is parsed as !empty(...).
+.else
+.  error
+.endif
+
+# A plain symbol name may start with one of the function names, in this case
+# 'defined'.
+.if defined-var
+.  error
+.else
+.  info Symbols may start with a function name.
+.endif
+
+defined-var=   non-empty
+.if defined-var
+.  info Symbols may start with a function name.
+.else
+.  error
+.endif
+
 all:
        @:;