#!/usr/bin/env bash

set -e

echo "> skip a line when reading from stdin"
INPUT=$(cat<<EOF
line 1
line 2
EOF
)
echo "line 2" > test.expect
echo "$INPUT" | ./skip 1 > test.out
diff --brief test.expect test.out

echo "> skip a line when reading from a file"
cat<<EOF > test.in
line 1
line 2
EOF
echo "line 2" > test.expect
./skip 1 test.in > test.out
diff --brief test.expect test.out

echo "> skip until 2 matching lines seen"
cat<<EOF > test.in
alpha
beta
alpha
alpha
gamma
alpha
EOF
cat<<EOF > test.expect
alpha
gamma
alpha
EOF
./skip 2 test.in --line alpha > test.out
diff --brief test.expect test.out

echo "> skip lines until 2 tokens seen"
cat<<EOF > test.in
Lorem ipsum dolor sit amet, 
consectetur adipiscing elit, 
sed do eiusmod tempor incididunt 
ut labore et dolore magna aliqua. 
Ut enim ad minim veniam, 
quis nostrud exercitation ullamco 
laboris nisi ut aliquip ex ea 
commodo consequat. 
EOF
cat<<EOF > test.expect
Ut enim ad minim veniam, 
quis nostrud exercitation ullamco 
laboris nisi ut aliquip ex ea 
commodo consequat. 
EOF
./skip 2 test.in --token dolor > test.out
diff --brief test.expect test.out

echo "> handle unknown parameter with simple error message"
cat<<EOF > test.expect
Invalid argument '--foo'
EOF
./skip --foo  > test.out 2>&1 || ## error is expected
diff --brief test.expect test.out

echo "> skip lines until 3 tokens seen - ignored extra tokens on same line"
cat<<EOF > test.in
Lorem ipsum dolor sit amet, 
consectetur adipiscing elit, 
sed do eiusmod tempor incididunt 
ut labore et dolore magna aliqua. 
Ut enim ad minim veniam, 
quis nostrud exercitation ullamco 
laboris nisi ut aliquip ex ea 
commodo consequat. 
EOF
cat<<EOF > test.expect
quis nostrud exercitation ullamco 
laboris nisi ut aliquip ex ea 
commodo consequat. 
EOF
./skip 3 test.in --token m --ignore-extras > test.out
diff --brief test.expect test.out

rm test.in test.out test.expect

echo done