From f058f34b5a892e73c0fe465e3180feab4659080a Mon Sep 17 00:00:00 2001
From: Hanno Becker <hanno.becker@arm.com>
Date: Sun, 23 Jul 2017 10:24:22 +0100
Subject: [PATCH] Support negative dependencies in test cases

The entropy test suite uses a negative dependency "depends_on:!CONFIG_FLAG" for one of its tests. This kind of
dependency (running a test only if some configuration flag is not defined) is currently not supported and instead
results in the respective test case being dropped.

This commit adds support for negative dependencies in test cases.
---
 tests/scripts/generate_code.pl | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/tests/scripts/generate_code.pl b/tests/scripts/generate_code.pl
index 84e949dfa..f803a803d 100755
--- a/tests/scripts/generate_code.pl
+++ b/tests/scripts/generate_code.pl
@@ -312,7 +312,7 @@ END
 # and make check code
 my $dep_check_code;
 
-my @res = $test_data =~ /^depends_on:([\w:]+)/msg;
+my @res = $test_data =~ /^depends_on:([!:\w]+)/msg;
 my %case_deps;
 foreach my $deps (@res)
 {
@@ -323,7 +323,23 @@ foreach my $deps (@res)
 }
 while( my ($key, $value) = each(%case_deps) )
 {
-    $dep_check_code .= << "END";
+    if( substr($key, 0, 1) eq "!" )
+    {
+        my $key = substr($key, 1);
+        $dep_check_code .= << "END";
+    if( strcmp( str, "!$key" ) == 0 )
+    {
+#if !defined($key)
+        return( DEPENDENCY_SUPPORTED );
+#else
+        return( DEPENDENCY_NOT_SUPPORTED );
+#endif
+    }
+END
+    }
+    else
+    {
+        $dep_check_code .= << "END";
     if( strcmp( str, "$key" ) == 0 )
     {
 #if defined($key)
@@ -333,6 +349,7 @@ while( my ($key, $value) = each(%case_deps) )
 #endif
     }
 END
+    }
 }
 
 # Make mapping code