From cffe2daf254834da119e5c3509ed405ea3fef6b5 Mon Sep 17 00:00:00 2001
From: Hanno Becker <hanno.becker@arm.com>
Date: Fri, 8 Sep 2017 10:39:07 +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 e13a2d0da..5d7d2193c 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