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all: add tests for usage error exit code
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@ -75,6 +75,11 @@ fn build_ascii_block(n: usize) -> Vec<u8> {
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(0..=127).cycle().take(n).collect()
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}
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#[test]
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fn test_invalid_arg() {
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new_ucmd!().arg("--definitely-invalid").fails().code_is(1);
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}
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// Sanity Tests
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#[test]
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fn version() {
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