test: make an offer with a bad invitation before upgrade

Note: 1IST is too much; gov1 doesn't have that much

a3p-integration/proposals/a:upgrade-15/prepare.sh

@@ -1,9 +1,29 @@
 #!/bin/bash
 
 # Exit when any command fails
-set -e
+set -uxeo pipefail
 
 # Place here any actions that should happen before the upgrade is proposed. The
 # actions are executed in the previous chain software, and the effects are
 # persisted so they can be used in the steps after the upgrade is complete,
 # such as in the "use" or "test" steps, or further proposal layers.
+
+printISTBalance() {
+  addr=$(agd keys show -a "$1" --keyring-backend=test)
+  agd query bank balances "$addr" -o json \
+    | jq -c '.balances[] | select(.denom=="uist")'
+
+}
+
+echo TEST: Offer with bad invitation
+printISTBalance gov1
+
+badInvitationOffer=$(mktemp)
+cat > "$badInvitationOffer" << 'EOF'
+{"body":"#{\"method\":\"executeOffer\",\"offer\":{\"id\":\"bad-invitation-15\",\"invitationSpec\":{\"callPipe\":[[\"badMethodName\"]],\"instancePath\":[\"reserve\"],\"source\":\"agoricContract\"},\"proposal\":{\"give\":{\"Collateral\":{\"brand\":\"$0.Alleged: IST brand\",\"value\":\"+15000\"}}}}}","slots":["board0257"]}
+EOF
+
+PATH=/usr/src/agoric-sdk/node_modules/.bin:$PATH
+agops perf satisfaction --keyring-backend=test send --executeOffer "$badInvitationOffer" --from gov1 || true
+
+printISTBalance gov1