Guesswork to make the travis tests more reliable

One of the steps is failing unpredictably (to me)

scripts/simple-tests.sh

@@ -2,9 +2,13 @@
 
 set -e
 
+# Safe enough...
+PCAP=$(mktemp -u /tmp/testXXXX.pcap)
+FIFO=$(mktemp -u /tmp/fifoXXXX)
+
 cleanup() {
-    rm /tmp/test.pcap
-    rm /tmp/fifo
+    rm "${PCAP}"
+    rm "${FIFO}"
 }
 
 trap cleanup EXIT
@@ -17,7 +21,7 @@ go install ./...
 
 echo Making a test pcap.
 
-cat <<EOF | xxd -r -p > /tmp/test.pcap
+cat <<EOF | xxd -r -p > "${PCAP}"
 d4c3b2a102000400
 0000000000000000
 0000040006000000
@@ -53,28 +57,28 @@ echo Running termshark cli tests.
 export TS="$GOPATH/bin/termshark"
 
 # stdout is not a tty, so falls back to tshark
-$TS -r /tmp/test.pcap | grep '192.168.44.213 TFTP 77'
+$TS -r "${PCAP}" | grep '192.168.44.213 TFTP 77'
 
 # prove that options provided are passed through to tshark 
-[[ $($TS -r /tmp/test.pcap -T psml -n | grep '<packet>' | wc -l) == 2 ]]
+[[ $($TS -r "${PCAP}" -T psml -n | grep '<packet>' | wc -l) == 2 ]]
 
 # Must choose either a file or an interface
-! $TS -r /tmp/test.pcap -i eth0
+! $TS -r "${PCAP}" -i eth0
 
 # only display the second line via tshark
-[[ $($TS -r /tmp/test.pcap 'frame.number == 2' | wc -l) == 1 ]]
+[[ $($TS -r "${PCAP}" 'frame.number == 2' | wc -l) == 1 ]]
 
 # test fifos
-mkfifo /tmp/fifo
-cat /tmp/test.pcap > /tmp/fifo &
-$TS -r /tmp/fifo | grep '192.168.44.213 TFTP 77'
+mkfifo "${FIFO}"
+cat "${PCAP}" > "${FIFO}" &
+$TS -r "${FIFO}" | grep '192.168.44.213 TFTP 77'
 wait
-rm /tmp/fifo
+rm "${FIFO}"
 
 # Check pass-thru option works. Make termshark run in a tty to ensure it's taking effect
-[[ $(script -q -e -c "$TS -r /tmp/test.pcap --pass-thru" | wc -l) == 2 ]]
+[[ $(script -q -e -c "$TS -r "${PCAP}" --pass-thru" | wc -l) == 2 ]]
 
-[[ $(script -q -e -c "$TS -r /tmp/test.pcap --pass-thru=true" | wc -l) == 2 ]]
+[[ $(script -q -e -c "$TS -r "${PCAP}" --pass-thru=true" | wc -l) == 2 ]]
 
 # run in script so termshark thinks it's in a tty
 cat version.go | grep -o -E "v[0-9]+\.[0-9]+(\.[0-9]+)?" | \
@@ -89,40 +93,40 @@ in_tty() {
 
 echo UI test 1
 # Load a pcap, quit
-{ sleep 5s ; echo q ; echo ; } | in_tty $TS -r /tmp/test.pcap
+{ sleep 5s ; echo q ; echo ; } | in_tty $TS -r "${PCAP}"
 
 echo UI test 2
 # Run with stdout not a tty, but disable the pass-thru to tshark
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r /tmp/test.pcap --pass-thru=false | cat"
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r "${PCAP}" --pass-thru=false | cat"
 
 echo UI test 3
 # Load a pcap, very rudimentary scrape for an IP, quit
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r /tmp/test.pcap" | grep -a 192.168.44.123 > /dev/null
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r "${PCAP}"" | grep -a 192.168.44.123 > /dev/null
 
 # Ensure -r flag isn't needed
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS /tmp/test.pcap" | grep -a 192.168.44.123 > /dev/null
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS "${PCAP}"" | grep -a 192.168.44.123 > /dev/null
 
 echo UI test 4
 # Load a pcap from stdin
-{ sleep 5s ; echo q ; echo ; } | in_tty "cat /tmp/test.pcap | TERM=xterm $TS -i -"
-{ sleep 5s ; echo q ; echo ; } | in_tty "cat /tmp/test.pcap | TERM=xterm $TS -r -"
-{ sleep 5s ; echo q ; echo ; } | in_tty "cat /tmp/test.pcap | TERM=xterm $TS"
+{ sleep 5s ; echo q ; echo ; } | in_tty "cat "${PCAP}" | TERM=xterm $TS -i -"
+{ sleep 5s ; echo q ; echo ; } | in_tty "cat "${PCAP}" | TERM=xterm $TS -r -"
+{ sleep 5s ; echo q ; echo ; } | in_tty "cat "${PCAP}" | TERM=xterm $TS"
 
 echo UI test 5
 # Display filter at end of command line
 { sleep 5s ; echo q ; echo ; } | in_tty "$TS -r scripts/pcaps/telnet-cooked.pcap \'frame.number == 2\'" | grep -a "Frame 2: 74 bytes" > /dev/null
 
 echo UI test 6
-mkfifo /tmp/fifo
-cat /tmp/test.pcap > /tmp/fifo &
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r /tmp/fifo"
+mkfifo "${FIFO}"
+cat "${PCAP}" > "${FIFO}" &
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -r "${FIFO}""
 wait
-cat /tmp/test.pcap > /tmp/fifo &
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -i /tmp/fifo"
+cat "${PCAP}" > "${FIFO}" &
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS -i "${FIFO}""
 wait
-cat /tmp/test.pcap > /tmp/fifo &
-{ sleep 5s ; echo q ; echo ; } | in_tty "$TS /tmp/fifo"
-#{ sleep 5s ; echo q ; echo ; } | in_tty "$TS /tmp/fifo \'frame.number == 2\'" | grep -a "Frame 2: 74 bytes" > /dev/null
+cat "${PCAP}" > "${FIFO}" &
+{ sleep 5s ; echo q ; echo ; } | in_tty "$TS "${FIFO}""
+#{ sleep 5s ; echo q ; echo ; } | in_tty "$TS "${FIFO}" \'frame.number == 2\'" | grep -a "Frame 2: 74 bytes" > /dev/null
 wait
 
 echo Tests were successful.