rename enum_variants threshold and add ui-toml test

just for struct, as the enum ice is being fixed in a different branch

Author: jonboh

clippy_lints/src/lib.rs

@@ -846,11 +846,11 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
             literal_representation_threshold,
         ))
     });
-    let enum_variant_name_threshold = conf.enum_variant_name_threshold;
+    let item_name_threshold = conf.item_name_threshold;
     let allow_private_module_inception = conf.allow_private_module_inception;
     store.register_late_pass(move |_| {
         Box::new(item_name_repetitions::ItemNameRepetitions::new(
-            enum_variant_name_threshold,
+            item_name_threshold,
             avoid_breaking_exported_api,
             allow_private_module_inception,
         ))

clippy_lints/src/utils/conf.rs

@@ -356,14 +356,10 @@ define_Conf! {
     ///
     /// The maximum size of objects (in bytes) that will be linted. Larger objects are ok on the heap
     (too_large_for_stack: u64 = 200),
-    /// Lint: ENUM_VARIANT_NAMES.
+    /// Lint: ENUM_VARIANT_NAMES, STRUCT_FIELD_NAMES
     ///
-    /// The minimum number of enum variants for the lints about variant names to trigger
-    (enum_variant_name_threshold: u64 = 3),
-    /// Lint: STRUCT_FIELD_NAMES.
-    ///
-    /// The minimum number of struct fields for the lints about field names to trigger
-    (struct_fields_name_threshold: u64 = 3),
+    /// The minimum number of enum variants or sruct fields for the lints about variant and field names to trigger
+    (item_name_threshold: u64 = 3),
     /// Lint: LARGE_ENUM_VARIANT.
     ///
     /// The maximum size of an enum's variant to avoid box suggestion

tests/ui-toml/item_name_repetitions_threshold0/clippy.toml

@@ -0,0 +1 @@
+item-name-threshold = 0

tests/ui-toml/item_name_repetitions_threshold0/item_name_repetitions.rs

@@ -0,0 +1,3 @@
+struct Data {}
+
+fn main() {}

tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr

@@ -31,11 +31,11 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect
            enable-raw-pointer-heuristic-for-send
            enforce-iter-loop-reborrow
            enforced-import-renames
-           enum-variant-name-threshold
            enum-variant-size-threshold
            excessive-nesting-threshold
            future-size-threshold
            ignore-interior-mutability
+           item-name-threshold
            large-error-threshold
            literal-representation-threshold
            matches-for-let-else
@@ -53,7 +53,6 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect
            single-char-binding-names-threshold
            stack-size-threshold
            standard-macro-braces
-           struct-fields-name-threshold
            suppress-restriction-lint-in-const
            third-party
            too-large-for-stack
@@ -105,11 +104,11 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect
            enable-raw-pointer-heuristic-for-send
            enforce-iter-loop-reborrow
            enforced-import-renames
-           enum-variant-name-threshold
            enum-variant-size-threshold
            excessive-nesting-threshold
            future-size-threshold
            ignore-interior-mutability
+           item-name-threshold
            large-error-threshold
            literal-representation-threshold
            matches-for-let-else
@@ -127,7 +126,6 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect
            single-char-binding-names-threshold
            stack-size-threshold
            standard-macro-braces
-           struct-fields-name-threshold
            suppress-restriction-lint-in-const
            third-party
            too-large-for-stack