feat(linter): implement noLowerCaseEnum (biomejs#3990)

crates/biome_diagnostics_categories/src/categories.rs

@@ -149,6 +149,7 @@ define_categories! {
     "lint/nursery/noInvalidGridAreas": "https://biomejs.dev/linter/rules/use-consistent-grid-areas",
     "lint/nursery/noInvalidPositionAtImportRule": "https://biomejs.dev/linter/rules/no-invalid-position-at-import-rule",
     "lint/nursery/noIrregularWhitespace": "https://biomejs.dev/linter/rules/no-irregular-whitespace",
+    "lint/nursery/noLowerCaseEnum": "https://biomejs.dev/linter/rules/no-lower-case-enum",
     "lint/nursery/noMissingGenericFamilyKeyword": "https://biomejs.dev/linter/rules/no-missing-generic-family-keyword",
     "lint/nursery/noMissingVarFunction": "https://biomejs.dev/linter/rules/no-missing-var-function",
     "lint/nursery/noOctalEscape": "https://biomejs.dev/linter/rules/no-octal-escape",

crates/biome_graphql_analyze/src/lint/nursery.rs

@@ -3,13 +3,15 @@
 use biome_analyze::declare_lint_group;
 
 pub mod no_duplicated_fields;
+pub mod no_lower_case_enum;
 pub mod use_deprecated_reason;
 
 declare_lint_group! {
     pub Nursery {
         name : "nursery" ,
         rules : [
             self :: no_duplicated_fields :: NoDuplicatedFields ,
+            self :: no_lower_case_enum :: NoLowerCaseEnum ,
             self :: use_deprecated_reason :: UseDeprecatedReason ,
         ]
      }

crates/biome_graphql_analyze/src/lint/nursery/no_lower_case_enum.rs

@@ -0,0 +1,76 @@
+use biome_analyze::{context::RuleContext, declare_lint_rule, Ast, Rule, RuleDiagnostic};
+use biome_console::markup;
+use biome_graphql_syntax::{GraphqlEnumValueDefinition, GraphqlRoot};
+use biome_rowan::{AstNode, TextRange};
+
+declare_lint_rule! {
+    /// Validates that all enum values are capitalized.
+    ///
+    /// By convention in GraphQL, enum values are all caps.
+    ///
+    /// ## Examples
+    ///
+    /// ### Invalid
+    ///
+    /// ```graphql,expect_diagnostic
+    /// enum MyEnum {
+    ///  value
+    /// }
+    /// ```
+    ///
+    /// ### Valid
+    ///
+    /// ```graphql
+    /// enum MyEnum {
+    ///  VALUE
+    /// }
+    /// ```
+    ///
+    pub NoLowerCaseEnum {
+        version: "next",
+        name: "noLowerCaseEnum",
+        language: "graphql",
+        recommended: false,
+    }
+}
+
+impl Rule for NoLowerCaseEnum {
+    type Query = Ast<GraphqlRoot>;
+    type State = TextRange;
+    type Signals = Option<Self::State>;
+    type Options = ();
+
+    fn run(ctx: &RuleContext<Self>) -> Option<Self::State> {
+        let node = ctx.query();
+        for val in node
+            .syntax()
+            .descendants()
+            .filter_map(GraphqlEnumValueDefinition::cast)
+        {
+            if val.text().chars().any(|c| c.is_lowercase()) {
+                return Some(val.range());
+            }
+        }
+
+        None
+    }
+
+    fn diagnostic(_ctx: &RuleContext<Self>, state: &Self::State) -> Option<RuleDiagnostic> {
+        //
+        // Read our guidelines to write great diagnostics:
+        // https://docs.rs/biome_analyze/latest/biome_analyze/#what-a-rule-should-say-to-the-user
+        //
+        Some(
+            RuleDiagnostic::new(
+                rule_category!(),
+                state,
+                markup! {
+                    "Enum values should be in all caps."
+                },
+            )
+            .note(markup! {
+                    "Change the enum value to be in all caps."
+            }),
+        )
+    }
+}

crates/biome_graphql_analyze/tests/specs/nursery/noLowerCaseEnum/invalid.graphql

@@ -0,0 +1,3 @@
+enum Status {
+	Active
+}

crates/biome_graphql_analyze/tests/specs/nursery/noLowerCaseEnum/invalid.graphql.snap

@@ -0,0 +1,28 @@
+---
+source: crates/biome_graphql_analyze/tests/spec_tests.rs
+expression: invalid.graphql
+---
+# Input
+```graphql
+enum Status {
+	Active
+}
+
+```
+
+# Diagnostics
+```
+invalid.graphql:2:2 lint/nursery/noLowerCaseEnum ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+  ! Enum values should be in all caps.
+  
+    1 │ enum Status {
+  > 2 │ 	Active
+      │ 	^^^^^^
+    3 │ }
+    4 │ 
+  
+  i Change the enum value to be in all caps.
+  
+
+```

crates/biome_graphql_analyze/tests/specs/nursery/noLowerCaseEnum/valid.graphql

@@ -0,0 +1,4 @@
+enum Status {
+	ACTIVE
+	INACTIVE
+}

crates/biome_graphql_analyze/tests/specs/nursery/noLowerCaseEnum/valid.graphql.snap

@@ -0,0 +1,12 @@
+---
+source: crates/biome_graphql_analyze/tests/spec_tests.rs
+expression: valid.graphql
+---
+# Input
+```graphql
+enum Status {
+	ACTIVE
+	INACTIVE
+}
+
+```