fn platform_deserialize_valid()

in target-spec/src/summaries.rs [222:293]

• 66 lines of code
• 2 McCabe index (conditional complexity)

    fn platform_deserialize_valid() {
        // Need a wrapper because of TOML restrictions
        #[derive(Debug, Deserialize, Serialize, Eq, PartialEq)]
        struct Wrapper {
            platform: PlatformSummary,
        }

        let mut valid = vec![];
        valid.push((
            r#"platform = "x86_64-unknown-linux-gnu""#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::Unknown,
                flags: BTreeSet::new(),
            },
        ));
        valid.push((
            r#"platform = { triple = "x86_64-unknown-linux-gnu" }"#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::Unknown,
                flags: BTreeSet::new(),
            },
        ));
        valid.push((
            r#"platform = { triple = "x86_64-unknown-linux-gnu", target-features = "unknown" }"#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::Unknown,
                flags: BTreeSet::new(),
            },
        ));
        valid.push((
            r#"platform = { triple = "x86_64-unknown-linux-gnu", target-features = "all" }"#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::All,
                flags: BTreeSet::new(),
            },
        ));
        valid.push((
            r#"platform = { triple = "x86_64-unknown-linux-gnu", target-features = [] }"#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::Features(BTreeSet::new()),
                flags: BTreeSet::new(),
            },
        ));

        let mut flags = BTreeSet::new();
        flags.insert("cargo_web".to_owned());
        valid.push((
            r#"platform = { triple = "x86_64-unknown-linux-gnu", flags = ["cargo_web"] }"#,
            PlatformSummary {
                triple: "x86_64-unknown-linux-gnu".into(),
                target_features: TargetFeaturesSummary::Unknown,
                flags,
            },
        ));

        for (input, expected) in valid {
            let actual: Wrapper = toml::from_str(input)
                .unwrap_or_else(|err| panic!("input {} is valid: {}", input, err));
            assert_eq!(actual.platform, expected, "for input: {}", input);

            // Serialize and deserialize again.
            let serialized = toml::to_string(&actual).expect("serialized correctly");
            let actual_2: Wrapper = toml::from_str(&serialized)
                .unwrap_or_else(|err| panic!("serialized input: {} is valid: {}", input, err));
            assert_eq!(actual, actual_2, "for input: {}", input);
        }
    }