Env::postconditions function for alternate validation.

src/ripple/test/jtx/Env.h

@@ -346,6 +346,12 @@ public:
     void
     submit (JTx const& jt);
 
+    /** Check expected postconditions
+        of JTx submission.
+    */
+    void
+    postconditions(JTx const& jt, TER ter, bool didApply);
+
     /** Apply funclets and submit. */
     /** @{ */
     template <class JsonValue, class... FN>

src/ripple/test/jtx/impl/Env.cpp

@@ -290,9 +290,15 @@ Env::submit (JTx const& jt)
         ter_ = temMALFORMED;
         didApply = false;
     }
-    if (jt.ter && ! test.expect(ter_ == *jt.ter,
-        "apply: " + transToken(ter_) +
-            " (" + transHuman(ter_) + ")"))
+    return postconditions(jt, ter_, didApply);
+}
+
+void
+Env::postconditions(JTx const& jt, TER ter, bool didApply)
+{
+    if (jt.ter && ! test.expect(ter == *jt.ter,
+        "apply: " + transToken(ter) +
+            " (" + transHuman(ter) + ")"))
     {
         test.log << pretty(jt.jv);
         // Don't check postconditions if