1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
#!/usr/bin/env bats
#
# Tests based on 'podman help'
#
# Find all commands listed by 'podman --help'. Run each one, make sure it
# provides its own --help output. If the usage message ends in '[command]',
# treat it as a subcommand, and recurse into its own list of sub-subcommands.
#
# Any usage message that ends in '[options]' is interpreted as a command
# that takes no further arguments; we confirm by running with 'invalid-arg'
# and confirming that it exits with error status and message.
#
load helpers
function check_help() {
local count=0
local -A found
for cmd in $(_podman_commands "$@"); do
# Human-readable podman command string, with multiple spaces collapsed
command_string="podman $* $cmd"
command_string=${command_string// / } # 'podman x' -> 'podman x'
dprint "$command_string --help"
run_podman "$@" $cmd --help
local full_help="$output"
# The line immediately after 'Usage:' gives us a 1-line synopsis
usage=$(echo "$full_help" | grep -A1 '^Usage:' | tail -1)
[ -n "$usage" ] || die "podman $cmd: no Usage message found"
# e.g. 'podman ps' should not show 'podman container ps' in usage
# Trailing space in usage handles 'podman system renumber' which
# has no ' [options]'
is "$usage " " $command_string .*" "Usage string matches command"
# If usage ends in '[command]', recurse into subcommands
if expr "$usage" : '.*\[command\]$' >/dev/null; then
found[subcommands]=1
check_help "$@" $cmd
continue
fi
# We had someone write upper-case '[OPTIONS]' once. Prevent it.
if expr "$usage" : '.*\[OPTION' >/dev/null; then
die "'options' string must be lower-case in usage: $usage"
fi
# We had someone do 'podman foo ARG [options]' one time. Yeah, no.
if expr "$usage" : '.*[A-Z].*\[option' >/dev/null; then
die "'options' must precede arguments in usage: $usage"
fi
# Cross-check: if usage includes '[options]', there must be a
# longer 'Options:' section in the full --help output; vice-versa,
# if 'Options:' is in full output, usage line must have '[options]'.
if expr "$usage" : '.*\[option' >/dev/null; then
if ! expr "$full_help" : ".*Options:" >/dev/null; then
die "$command_string: Usage includes '[options]' but has no 'Options:' subsection"
fi
elif expr "$full_help" : ".*Options:" >/dev/null; then
die "$command_string: --help has 'Options:' section but no '[options]' in synopsis"
fi
# If usage lists no arguments (strings in ALL CAPS), confirm
# by running with 'invalid-arg' and expecting failure.
if ! expr "$usage" : '.*[A-Z]' >/dev/null; then
if [ "$cmd" != "help" ]; then
dprint "$command_string invalid-arg"
run_podman '?' "$@" $cmd invalid-arg
is "$status" 125 "'$command_string invalid-arg' - exit status"
is "$output" "Error: .* takes no arguments" \
"'$command_string' with extra (invalid) arguments"
fi
found[takes_no_args]=1
fi
# If command lists "-l, --latest" in help output, combine -l with arg.
# This should be disallowed with a clear message.
if expr "$full_help" : ".*-l, --latest" >/dev/null; then
local nope="exec list port ps top" # these can't be tested
if is_rootless; then
nope="$nope mount restore" # these don't work rootless
fi
if ! grep -wq "$cmd" <<<$nope; then
run_podman 125 "$@" $cmd -l nonexistent-container
is "$output" "Error: .*--latest and \(containers\|pods\|arguments\) cannot be used together" \
"'$command_string' with both -l and container"
fi
fi
# If usage has required arguments, try running without them.
# The expression here is 'first capital letter is not in [BRACKETS]'.
# It is intended to handle 'podman foo [options] ARG' but not ' [ARG]'.
if expr "$usage" : '[^A-Z]\+ [A-Z]' >/dev/null; then
# Exceptions: these commands don't work rootless
if is_rootless; then
# "pause is not supported for rootless containers"
if [ "$cmd" = "pause" -o "$cmd" = "unpause" ]; then
continue
fi
# "network rm" too
if [ "$@" = "network" -a "$cmd" = "rm" ]; then
continue
fi
fi
# The </dev/null protects us from 'podman login' which will
# try to read username/password from stdin.
dprint "$command_string (without required args)"
run_podman '?' "$@" $cmd </dev/null
is "$status" 125 "'$command_string' with no arguments - exit status"
is "$output" "Error:.* \(require\|specif\|must\|provide\|need\|choose\|accepts\)" \
"'$command_string' without required arg"
found[required_args]=1
fi
# Commands with fixed number of arguments (i.e. no ellipsis): count
# the required args, then invoke with one extra. We should get a
# usage error.
if ! expr "$usage" : ".*\.\.\."; then
# "podman help" can take infinite args, so skip that one
if [ "$cmd" != "help" ]; then
# Get the args part of the command line; this should be
# everything from the first CAPITAL LETTER onward. We
# don't actually care about the letter itself, so just
# make it 'X'. And we don't care about [OPTIONAL] brackets
# either. What we do care about is stuff like 'IMAGE | CTR'
# which is actually one argument; convert to 'IMAGE-or-CTR'
local rhs=$(sed -e 's/^[^A-Z]\+[A-Z]/X/' -e 's/ | /-or-/g' <<<"$usage")
local n_args=$(wc -w <<<"$rhs")
run_podman '?' "$@" $cmd $(seq --format='x%g' 0 $n_args)
is "$status" 125 "'$command_string' with >$n_args arguments - exit status"
is "$output" "Error:.* \(takes no arguments\|requires exactly $n_args arg\|accepts at most\|too many arguments\|accepts $n_args arg(s), received\|accepts between .* and .* arg(s), received \)" \
"'$command_string' with >$n_args arguments"
found[fixed_args]=1
fi
fi
count=$(expr $count + 1)
done
# Any command that takes subcommands, prints its help and errors if called
# without one.
dprint "podman $@"
run_podman '?' "$@"
is "$status" 125 "'podman $*' without any subcommand - exit status"
is "$output" ".*Usage:.*Error: missing command '.*$@ COMMAND'" \
"'podman $*' without any subcommand - expected error message"
# Assume that 'NoSuchCommand' is not a command
dprint "podman $@ NoSuchCommand"
run_podman '?' "$@" NoSuchCommand
is "$status" 125 "'podman $* NoSuchCommand' - exit status"
is "$output" "Error: unrecognized command .*$@ NoSuchCommand" \
"'podman $* NoSuchCommand' - expected error message"
# This can happen if the output of --help changes, such as between
# the old command parser and cobra.
[ $count -gt 0 ] || \
die "Internal error: no commands found in 'podman help $@' list"
# Sanity check: make sure the special loops above triggered at least once.
# (We've had situations where a typo makes the conditional never run)
if [ -z "$*" ]; then
for i in subcommands required_args takes_no_args fixed_args; do
if [[ -z ${found[$i]} ]]; then
die "Internal error: '$i' subtest did not trigger"
fi
done
fi
}
@test "podman help - basic tests" {
skip_if_remote
# Called with no args -- start with 'podman --help'. check_help() will
# recurse for any subcommands.
check_help
# Test for regression of #7273 (spurious "--remote" help on output)
for helpopt in help --help; do
run_podman $helpopt
is "${lines[0]}" "Manage pods, containers and images" \
"podman $helpopt: first line of output"
done
}
# vim: filetype=sh
|
