Fill in more configuration deserialization and manifest deserialization tests

Author: dtolnay

tests/testsuite/bad_config.rs

@@ -1420,6 +1420,108 @@ fn warn_semver_metadata() {
         .run();
 }
 
+#[cargo_test]
+fn bad_http_ssl_version() {
+    // Invalid type in SslVersionConfig.
+    let p = project()
+        .file(
+            ".cargo/config.toml",
+            r#"
+            [http]
+            ssl-version = ["tlsv1.2", "tlsv1.3"]
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[ERROR] error in [..]/config.toml: could not load config key `http.ssl-version`
+
+Caused by:
+  invalid type: sequence, expected a string or map
+",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn bad_http_ssl_version_range() {
+    // Invalid type in SslVersionConfigRange.
+    let p = project()
+        .file(
+            ".cargo/config.toml",
+            r#"
+            [http]
+            ssl-version.min = false
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[ERROR] data did not match any variant of untagged enum SslVersionConfig
+",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn bad_build_jobs() {
+    // Invalid type in JobsConfig.
+    let p = project()
+        .file(
+            ".cargo/config.toml",
+            r#"
+            [build]
+            jobs = { default = true }
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[ERROR] data did not match any variant of untagged enum JobsConfig
+",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn bad_build_target() {
+    // Invalid type in BuildTargetConfig.
+    let p = project()
+        .file(
+            ".cargo/config.toml",
+            r#"
+            [build]
+            target.'cfg(unix)' = "x86_64"
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[ERROR] error in [..]/config.toml: could not load config key `build.target`
+
+Caused by:
+  data did not match any variant of untagged enum BuildTargetConfigInner
+",
+        )
+        .run();
+}
+
 #[cargo_test]
 fn bad_target_cfg() {
     // Invalid type in a StringList.

tests/testsuite/lints.rs

@@ -210,6 +210,38 @@ Caused by:
         .run();
 }
 
+#[cargo_test]
+fn invalid_type_in_lint_value() {
+    let foo = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                version = "0.0.1"
+
+                [workspace.lints.rust]
+                rust-2018-idioms = -1
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    foo.cargo("check -Zlints")
+        .masquerade_as_nightly_cargo(&["lints"])
+        .with_status(101)
+        .with_stderr(
+            "\
+error: failed to parse manifest at `[..]/Cargo.toml`
+
+Caused by:
+  data did not match any variant of untagged enum TomlLint
+  in `rust.rust-2018-idioms`
+",
+        )
+        .run();
+}
+
 #[cargo_test]
 fn fail_on_tool_injection() {
     let foo = project()