Make test lambda1 compatible with symex-driven loading

Previously it didn't have an entry-point, and so relied on the normal load process
loading all functions. The added entry-point mimics that behaviour when loading is
on-demand.

Author: smowton

regression/cbmc-java/lambda1/B.class

@@ -36,11 +36,11 @@ public int j(int x) {
 
     public int k(int x) {
         a.x = 10;
-        
+
         Function<Integer, Integer> foo = (y) -> y * a.x;
         return foo.apply(x);
     }
-    
+
     public int l(int x) {
         b.y = 10;
         Function<Integer, Integer> foo = (y) -> {
@@ -75,6 +75,19 @@ public int capture2(Float a) {
     public boolean custom(Integer i) {
         return custom.is_ok(i);
     }
+
+    public static void main(String[] args) {
+        // Uses all of the above test functions, to ensure they are loaded under
+        // symex-driven loading:
+
+        Lambdatest lt = new Lambdatest();
+        lt.f(0.0f, 0, 0);
+        lt.i(0);
+        lt.j(0);
+        lt.k(0);
+        lt.l(0);
+        lt.m(0);
+    }
 }
 
 class C implements CustomLambda<Integer> {

regression/cbmc-java/lambda1/C.class

@@ -1,6 +1,6 @@
 CORE
 Lambdatest.class
---verbosity 10 --show-goto-functions
+--verbosity 10 --show-goto-functions --function Lambdatest.main
 lambda function reference lambda\$new\$0 in class \"Lambdatest\"
 lambda function reference lambda\$new\$1 in class \"Lambdatest\"
 lambda function reference lambda\$f\$2 in class \"Lambdatest\"
@@ -12,3 +12,8 @@ lambda function reference lambda\$m\$7 in class \"Lambdatest\"
 lambda function reference lambda\$static\$0 in class \"B\"
 ^EXIT=0$
 ^SIGNAL=0$
+--
+--
+Incompatible with symex-driven lazy loading because this test wants to process
+everything in the given class, not the functions reachable from a particular
+entry point, which is required for symex-driven loading.