daemon: first unit test, infrastructure.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

daemon/test/scripts/mockup.sh

@@ -0,0 +1,39 @@
+#! /bin/sh
+
+if [ $# -eq 0 ]; then
+    # With no args, read stdin to scrape compiler output.
+    set -- $(while read LINE; do
+	case "$LINE" in
+	    *undefined\ reference\ to*)
+		LINE=${LINE#*undefined reference to \`}
+		echo ${LINE%\'*}
+		;;
+	    *)
+		continue
+		;;
+	esac; done | sort -u)
+fi
+
+for SYMBOL; do
+    WHERE=$(grep -nH "^[a-z0-9_ ]* [*]*$SYMBOL(" daemon/*.h)
+    if [ x"$WHERE" != x ]; then
+	STUB='\n{ fprintf(stderr, "'$SYMBOL' called!\\n"); abort(); }'
+    else
+	WHERE=$(grep -nH "^extern \(const \)\?struct [a-zA-Z0-9_]* $SYMBOL;$" daemon/*.h)
+	if [ x"$WHERE" != x ]; then
+	    STUB=';'
+	else
+	    echo "/* Could not find declaration for $SYMBOL */"
+	    continue
+	fi
+    fi
+	
+    echo "/* Generated stub for $SYMBOL */"
+    FILE=${WHERE%%:*}
+    FILE_AND_LINE=${WHERE%:*}
+    LINE=${FILE_AND_LINE#*:}
+    END=$(tail -n +$LINE < $FILE | grep -n ';$');
+    NUM=${END%%:*}
+
+    tail -n +$LINE < $FILE | head -n $NUM | sed 's/^extern *//' | sed 's/PRINTF_FMT([^)]*)//' | sed "s/;\$/$STUB/"
+done