Generalize assert_fail:test to accept any expression

test/exceptions/src/assert_fail.d

@@ -1,12 +1,17 @@
 import core.stdc.stdio : fprintf, printf, stderr;
 
 void test(string comp = "==", A, B)(A a, B b, string msg, size_t line = __LINE__)
+{
+    test(assert(mixin("a " ~ comp ~ " b")), msg, line);
+}
+
+void test(T)(lazy T dg, string msg, size_t line = __LINE__)
 {
     int ret = () {
         import core.exception : AssertError;
         try
         {
-            assert(mixin("a " ~ comp ~ " b"));
+            dg();
         } catch(AssertError e)
         {
             // don't use assert here for better debugging
@@ -111,13 +116,13 @@ void testStruct()()
     test(T([T(null)]), T(null), "[T([])] != []");
 
     https://issues.dlang.org/show_bug.cgi?id=20323
-    struct NoCopy
+    static struct NoCopy
     {
         @disable this(this);
     }
 
     NoCopy n;
-    assert(n == n);
+    test(assert(n != n), "NoCopy() is NoCopy()");
 }
 
 void testAA()()
@@ -155,7 +160,7 @@ void testTemporary()
         ~this() @system {}
     }
 
-    assert(Bad() == Bad());
+    test(assert(Bad() != Bad()), "Bad() is Bad()");
 }
 
 void main()