fish-shell/tests/bind.expect

# vim: set filetype=expect:
spawn $fish
expect_prompt

# Fish should start in default-mode (i.e., emacs) bindings. The default escape
# timeout is 300ms.

# Verify the emacs transpose word (\et) behavior using various delays,
# including none, after the escape character.

# Start by testing with no delay. This should transpose the words.
send "echo abc def"
send "\033t\r"
expect_prompt -re {\r\ndef abc\r\n} {
    puts "emacs transpose words, default timeout: no delay"
} unmatched {
    puts stderr "emacs transpose words fail, default timeout: no delay"
}

# Now test with a delay > 0 and < the escape timeout. This should transpose
# the words.
send "echo ghi jkl"
send "\033"
sleep 0.250
send "t\r"
expect_prompt -re {\r\njkl ghi\r\n} {
    puts "emacs transpose words, default timeout: short delay"
} unmatched {
    puts stderr "emacs transpose words fail, default timeout: short delay"
}

# Now test with a delay > the escape timeout. The transposition should not
# occur and the "t" should become part of the text that is echoed.
send "echo mno pqr"
send "\033"
sleep 0.400
send "t\r"
expect_prompt -re {\r\nmno pqrt\r\n} {
    puts "emacs transpose words, default timeout: long delay"
} unmatched {
    puts stderr "emacs transpose words fail, default timeout: long delay"
}

# Test vi key bindings.
# This should leave vi mode in the insert state.
send "set -g fish_key_bindings fish_vi_key_bindings\r"
expect_prompt

# These vi tests assume the fish_vi_key_bindings default escape timeout of
# 10ms is in effect; not the 300ms timeout for the default-mode.
#

# Go through a prompt cycle to let fish catch up, it may be slow due to ASAN
send "echo success: default escape timeout\r"
expect_prompt -re {\r\nsuccess: default escape timeout\r\n} {
    puts "prime vi mode, default timeout"
} unmatched {
    puts stderr "prime vi mode, default timeout"
}

# Verify the default timeout has been set to the expected value.
send "echo fish_escape_delay_ms=\$fish_escape_delay_ms\r"
expect_prompt -re {\r\nfish_escape_delay_ms=10\r\n} {
    puts "vi-mode default timeout set correctly"
} unmatched {
    puts stderr "vi-mode default timeout not set correctly"
}

send "echo fail: default escape timeout"
send "\033"
# Delay needed to allow fish to transition to vi "normal" mode. The delay is
# longer than strictly necessary to let fish catch up as it may be slow due to
# ASAN.
sleep 0.100
send "ddi"
send "echo success: default escape timeout\r"
expect_prompt -re {\r\nsuccess: default escape timeout\r\n} {
    puts "vi replace line, default timeout: long delay"
} unmatched {
    puts stderr "vi replace line, default timeout: long delay"
}

# Verify that a human can transpose words using \et (which is an emacs default
# binding but should be valid while in vi insert or normal mode).
send "echo abc def"
send "\033"
sleep 0.005
send "t\r"
expect_prompt -re {\r\ndef abc\r\n} {
    puts "vi transpose words, default timeout: short delay"
} unmatched {
    puts stderr "vi transpose words, default timeout: short delay"
}

# Test replacing a single character.
send "echo TEXT"
send "\033"
# Delay needed to allow fish to transition to vi "normal" mode.
sleep 0.100
send "hhrAi\r"
expect_prompt -re {\r\nTAXT\r\n} {
    puts "vi mode replace char, default timeout: long delay"
} unmatched {
    puts stderr "vi mode replace char, default timeout: long delay"
}

# Verify that changing the escape timeout has an effect.
send "set -g fish_escape_delay_ms 100\r"
expect_prompt

send "echo fail: lengthened escape timeout"
send "\033"
sleep 0.250
send "ddi"
send "echo success: lengthened escape timeout\r"
expect_prompt -re {\r\nsuccess: lengthened escape timeout\r\n} {
    puts "vi replace line, 100ms timeout: long delay"
} unmatched {
    puts stderr "vi replace line, 100ms timeout: long delay"
}

# Verify that we don't switch to vi normal mode if we don't wait long enough
# after sending escape.
send "echo fail: no normal mode"
send "\033"
sleep 0.050
send "ddi"
send "inserted\r"
expect_prompt -re {\r\nfail: no normal modediinserted\r\n} {
    puts "vi replace line, 100ms timeout: short delay"
} unmatched {
    puts stderr "vi replace line, 100ms timeout: short delay"
}

# Test 't' binding that contains non-zero arity function (forward-jump) followed
# by another function (and) https://github.com/fish-shell/fish-shell/issues/2357
send "\033"
sleep 0.250
send "ddiecho TEXT\033"
sleep 0.250
send "hhtTrN\r"
expect_prompt -re {\r\nTENT\r\n} {
    puts "t-binding success"
} -nounmatched -re {\r\nfail} {
    puts stderr "t-binding fail"
} unmatched {
    puts stderr "Couldn't find expected output 'TENT'"
}

# Switch back to regular (emacs mode) key bindings.
send "set -g fish_key_bindings fish_default_key_bindings\r"
expect_prompt

# Verify the custom escape timeout of 100ms set earlier is still in effect.
send "echo fish_escape_delay_ms=\$fish_escape_delay_ms\r"
expect_prompt -re {\r\nfish_escape_delay_ms=100\r\n} {
    puts "default-mode custom timeout set correctly"
} unmatched {
    puts stderr "default-mode custom timeout not set correctly"
}

# Verify the emacs transpose word (\et) behavior using various delays,
# including none, after the escape character.

# Start by testing with no delay. This should transpose the words.
send "echo abc def"
send "\033"
send "t\r"
expect_prompt -re {\r\ndef abc\r\n} {
    puts "emacs transpose words, 100ms timeout: no delay"
} unmatched {
    puts stderr "emacs transpose words fail, 100ms timeout: no delay"
}


# Same test as above but with a slight delay less than the escape timeout.
send "echo ghi jkl"
send "\033"
sleep 0.080
send "t\r"
expect_prompt -re {\r\njkl ghi\r\n} {
    puts "emacs transpose words, 100ms timeout: short delay"
} unmatched {
    puts stderr "emacs transpose words fail, 100ms timeout: short delay"
}

# Now test with a delay > the escape timeout. The transposition should not
# occur and the "t" should become part of the text that is echoed.
send "echo mno pqr"
send "\033"
sleep 0.250
send "t\r"
expect_prompt -re {\r\nmno pqrt\r\n} {
    puts "emacs transpose words, 100ms timeout: long delay"
} unmatched {
    puts stderr "emacs transpose words fail, 100ms timeout: long delay"
}