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Implement switch -h, --help to CLI #238

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Implement switch -h, --help to CLI #238

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52c0557
Implement switch --help to cli
nappex Aug 16, 2024
7d529a5
Fix typo with semicolon and remove debug print
nappex Aug 16, 2024
16bc722
add tests for ---help switch
nappex Aug 16, 2024
9b2cebc
Split test to use valid help switch and invalid combination with anot…
nappex Aug 25, 2024
79dad90
Update test for help switch in usage message
nappex Aug 25, 2024
d8da52e
Move invalid combinations of switches to global constant to be able t…
nappex Aug 25, 2024
b9c920d
Fix a typo
nappex Aug 25, 2024
feaaa75
move test of invalid switch combination and fix name of constant for …
nappex Aug 25, 2024
3703cdb
Test switch help as last one with downloader component to invoke usag…
nappex Aug 25, 2024
d8372eb
Capitalize help message sentence for consistency
nappex Sep 8, 2024
1349a63
Merge branch 'master' into implement-help-option
nappex Dec 17, 2024
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8 changes: 6 additions & 2 deletions lib/cli.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,12 @@ defmodule Onigumo.CLI do
def main(argv) do
case OptionParser.parse(
argv,
aliases: [C: :working_dir],
strict: [working_dir: :string]
aliases: [h: :help, C: :working_dir],
strict: [help: :boolean, working_dir: :string]
) do
{[help: true], [], []} ->
usage_message()

{parsed_switches, [component], []} ->
{:ok, module} = Map.fetch(@components, String.to_atom(component))
working_dir = Keyword.get(parsed_switches, :working_dir, File.cwd!())
Expand All @@ -30,6 +33,7 @@ defmodule Onigumo.CLI do
COMPONENT\tOnigumo component to run, available: #{components}

OPTIONS:
-h, --help\t\tprint this help
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Capitalized, this sentence would be more consistent.

Suggested change
-h, --help\t\tprint this help
-h, --help\t\tPrint this help

-C, --working-dir <dir>\tChange working dir to <dir> before running
""")
end
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12 changes: 12 additions & 0 deletions test/onigumo_cli_test.exs
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Expand Up @@ -60,6 +60,18 @@ defmodule OnigumoCLITest do
end
end

for switch <- ["-h", "--help"] do
test("run CLI with a #{inspect(switch)} switch") do
assert usage_message_printed?(fn -> Onigumo.CLI.main([unquote(switch)]) end)
end
end

for switches <- ["--help -C invalid", "-h --invalid"] do
test("run invalid combination of swiches #{inspect(switches)} ") do
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assert usage_message_printed?(fn -> Onigumo.CLI.main([unquote(switches)]) end)
end
end

defp usage_message_printed?(function) do
output = capture_io(function)
String.starts_with?(output, "Usage: onigumo ")
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