Make test scripts return error code

Make them executable.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>

test/asm/test.sh

@@ -1,8 +1,10 @@
 fname=$(mktemp)
+rc=0
 
 for i in *.asm; do
 	../../rgbasm $i >$fname 2>&1
 	diff -u $fname ${i%.asm}.out
+	rc=$(($? || $rc))
 done
 
-exit 0
+exit $rc

test/link/test.sh

@@ -2,6 +2,7 @@ otemp=$(mktemp)
 gbtemp=$(mktemp)
 gbtemp2=$(mktemp)
 outtemp=$(mktemp)
+rc=0
 
 RGBASM=../../rgbasm
 RGBLINK=../../rgblink
@@ -9,37 +10,48 @@ RGBLINK=../../rgblink
 $RGBASM -o $otemp bank-numbers.asm
 $RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
 diff bank-numbers.out $outtemp
+rc=$(($? || $rc))
 head -c 20 $gbtemp > $otemp 2>&1
 diff bank-numbers.out.bin $otemp
+rc=$(($? || $rc))
 
 $RGBASM -o $otemp wramx-dmg-mode.asm
 $RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
 diff wramx-dmg-mode-no-d.out $outtemp
+rc=$(($? || $rc))
 $RGBLINK -d -o $gbtemp $otemp > $outtemp 2>&1
 diff wramx-dmg-mode-d.out $outtemp
+rc=$(($? || $rc))
 
 $RGBASM -o $otemp vram-fixed-dmg-mode.asm
 $RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
 diff vram-fixed-dmg-mode-no-d.out $outtemp
+rc=$(($? || $rc))
 $RGBLINK -d -o $gbtemp $otemp > $outtemp 2>&1
 diff vram-fixed-dmg-mode-d.out $outtemp
+rc=$(($? || $rc))
 
 $RGBASM -o $otemp vram-floating-dmg-mode.asm
 $RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
 diff vram-floating-dmg-mode-no-d.out $outtemp
+rc=$(($? || $rc))
 $RGBLINK -d -o $gbtemp $otemp > $outtemp 2>&1
 diff vram-floating-dmg-mode-d.out $outtemp
+rc=$(($? || $rc))
 
 $RGBASM -o $otemp romx-tiny.asm
 $RGBLINK -o $gbtemp $otemp > $outtemp 2>&1
 diff romx-tiny-no-t.out $outtemp
+rc=$(($? || $rc))
 $RGBLINK -t -o $gbtemp $otemp > $outtemp 2>&1
 diff romx-tiny-t.out $outtemp
+rc=$(($? || $rc))
 
 $RGBASM -o $otemp high-low-a.asm
 $RGBLINK -o $gbtemp $otemp
 $RGBASM -o $otemp high-low-b.asm
 $RGBLINK -o $gbtemp2 $otemp
 diff $gbtemp $gbtemp2
+rc=$(($? || $rc))
 
-exit 0
+exit $rc