add partial test script

tests/ulm/erc20/erc20_test.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+ROOT_DIR="$SCRIPT_DIR/../../.."
+
+# change to root directory
+cd "$ROOT_DIR"
+
+# re-execute script with poetry to get poetry script aliases
+if [ -z ${IN_POETRY_SHELL:+x} ]; then
+  export IN_POETRY_SHELL=1
+  exec poetry -C pykwasm run bash "$SCRIPT_DIR/$0"
+fi
+
+# generate some accounts
+a1=$(mkacct)
+a2=$(mkacct)
+a3=$(mkacct)
+
+# fund accounts
+fund /dev/stdin <<< $a1
+fund /dev/stdin <<< $a2
+fund /dev/stdin <<< $a3
+
+# deploy contract
+contract=$(deploy build/erc20/erc20.bin http://localhost:8545 /dev/stdin <<< $a1)
+
+# check decimals
+decimals=$(call http://localhost:8545 erc20 $contract /dev/stdin 0 decimals <<< $a1)
+
+# check total supply
+supply=$(call http://localhost:8545 erc20 $contract /dev/stdin 0 totalSupply <<< $a1)
+
+