Output return code of last command when a test fails

roundup-5-test.sh

@@ -85,6 +85,15 @@ it_runs_after_if_a_test_fails_part_2() {
     test "!" -f foo.txt
 }
 
+# Output the correct return code of a failing command of a testcase.
+it_outputs_the_return_code_7() {
+    function f() { return 42; }
+    x=$(echo asdf)
+
+    function g() { return 7; }
+    g
+}
+
 # Roundup will ignore tests starting with `x`.  Ignored tests are still
 # enumerated in the plans output marked with `[I]`.  If roundup does not ignore
 # this, result in failure.

roundup.sh

@@ -95,6 +95,11 @@ roundup_trace() {
     # Delete the first two lines that represent roundups execution of the
     # test function.  They are useless to the user.
     sed '1d'                                   |
+    # Delete the last line which is the "set +x" of the error trap
+    sed '$d'                                   |
+    # Replace the rc=$? of the error trap with an verbose string appended
+    # to the failing command trace line.
+    sed '$s/.*rc=/exit code /'                 |
     # Trim the two left most `+` signs.  They represent the depth at which
     # roundup executed the function.  They also, are useless and confusing.
     sed 's/^++//'                              |
@@ -245,6 +250,15 @@ do
                     set +x
                 } &>/dev/null
 
+                # exit subshell with return code of last failing command. This
+                # is needed to see the return code 253 on failed assumptions.
+                # But, only do this if the error handling is activated.
+                set -E
+                trap 'rc=$?; set +x; set -o | grep "errexit.*on" >/dev/null && exit $rc' ERR
+
+                # If `before` wasn't redefined, then this is `:`.
+                before
+
                 # Momentarily turn off auto-fail to give us access to the tests
                 # exit status in `$?` for capturing.
                 set +e