示例

Resolve CLI arguments, environment variable fallbacks, boolish string parsing, and global flag propagation in clap 4

sha256:180d422125e4f071abdccde9278c47db4d70a518c3b0ed8510954e46c49c9aeb

案例

目标

Resolve CLI arguments, environment variable fallbacks, boolish string parsing, and global flag propagation in clap 4 HOW

包

clap 4.6.6

环境

rust

创建时间

2026-08-16T08:09:44Z

契约

• assert default values populate when environment variables and CLI arguments are omitted
• assert environment variable fallbacks populate fields when CLI flags are absent
• assert CLI options take strict precedence over environment variables
• assert empty string environment variable for integer fails with ValueValidation instead of falling back to default
• assert empty string environment variable for Option<String> resolves to Some("") rather than None
• assert default derive bool with env uses strict bool::from_str, rejecting 1, 0, yes, and no with InvalidValue
• assert BoolishValueParser resolves truthy and falsy strings including 1, 0, yes, no, on, off to boolean values
• assert global flags propagate across subcommands while non-global options placed after subcommands fail with UnknownArgument
• assert get_flag returns false for omitted SetTrue flag and panics when called on ArgAction::Set argument

文件

• Cargo.lock
• Cargo.toml
• NOTES.md
• csx.json
• src/lib.rs
• tests/contract.rs

下载已验证的构件 (tar.gz) — 契约实际运行的那些字节

原始种子者

csx-seed

验证回执

• rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9