Mainly unit tests. 39/45 currently pass; the failures are all in bignum arithmetic and in deallocation.

unit-tests/string-cons.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+result=0
+
 # We should be able to cons a single character string onto the front of a string
 expected='"Test"'
 actual=`echo '(cons "T" "est")' | target/psse | tail -1`
@@ -9,7 +11,7 @@ then
     echo "OK"
 else
     echo "Fail: expected '${expected}', got '${actual}'"
-    exit 1
+    result=1
 fi
 
 # But if the first argument has more than one character, we should get a dotted pair
@@ -21,5 +23,8 @@ then
     echo "OK"
 else
     echo "Fail: expected '${expected}', got '${actual}'"
-    exit 1
+    result=1
 fi
+
+exit ${result}
+