From 276d530abee44ae539073db012a21f860623cae6 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 1c9cfc5b38..3491eced3d 100755
--- a/tests/scripts/generate_code.pl
+++ b/tests/scripts/generate_code.pl
@@ -194,7 +194,7 @@ 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)
 {
@@ -205,7 +205,23 @@ 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( 0 );
+#else
+        return( 1 );
+#endif
+    }
+END
+    }
+    else
+    {
+        $dep_check_code .= << "END";
     if( strcmp( str, "$key" ) == 0 )
     {
 #if defined($key)
@@ -215,6 +231,7 @@ while( my ($key, $value) = each(%case_deps) )
 #endif
     }
 END
+    }
 }
 
 # Make mapping code