catching 2 error conditions

Author: jan

io.sloeber.autoBuild.test/src/io/sloeber/autoBuild/regression/AutoBuildRegression.java

@@ -134,6 +134,7 @@ public void setBuilder() throws Exception {
 
         IProjectType projectType= AutoBuildManager.getProjectType( extensionPointID, defaultExtensionID, defaultProjectTypeID, true);
         IBuildTools buildTools = IBuildToolsManager.getDefault().getAnyInstalledBuildTools(projectType);
+        assertNotNull("no build tools found on the system", buildTools);
         IProject testProject = AutoBuildProject.createProject(projectName, projectType, CCProjectNature.CC_NATURE_ID,
         		cpp_exeCodeProvider, buildTools, false, null);
 

io.sloeber.autoBuild/src/io/sloeber/autoBuild/schema/internal/enablement/ToolFlavourExpression.java

@@ -20,6 +20,8 @@ public ToolFlavourExpression(IConfigurationElement element) {
     @Override
     public EvaluationResult evaluate(IEvaluationContext context) throws CoreException {
         AutoBuildConfigurationDescription autoData = (AutoBuildConfigurationDescription) context.getDefaultVariable();
+        if (autoData == null)
+            return EvaluationResult.FALSE;
         String str = autoData.getBuildToolsFlavour().toString();
         if (str == null)
             return EvaluationResult.FALSE;