Add missing unit tests for `# noqa:`-like cases (#16659)

crates/ruff_linter/src/noqa.rs

@@ -1250,6 +1250,30 @@ mod tests {
         assert_lexed_ranges_match_slices(directive, source);
     }
 
+    #[test]
+    fn noqa_no_code() {
+        let source = "# noqa:";
+        let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(directive);
+        assert_lexed_ranges_match_slices(directive, source);
+    }
+
+    #[test]
+    fn noqa_no_code_invalid_suffix() {
+        let source = "# noqa: foo";
+        let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(directive);
+        assert_lexed_ranges_match_slices(directive, source);
+    }
+
+    #[test]
+    fn noqa_no_code_trailing_content() {
+        let source = "# noqa:  # Foo";
+        let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(directive);
+        assert_lexed_ranges_match_slices(directive, source);
+    }
+
     #[test]
     fn noqa_code() {
         let source = "# noqa: F401";
@@ -1482,6 +1506,30 @@ mod tests {
         assert_lexed_ranges_match_slices(exemption, source);
     }
 
+    #[test]
+    fn flake8_noqa_no_code() {
+        let source = "# flake8: noqa:";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
+    #[test]
+    fn flake8_noqa_no_code_invalid_suffix() {
+        let source = "# flake8: noqa: foo";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
+    #[test]
+    fn flake8_noqa_no_code_trailing_content() {
+        let source = "# flake8: noqa:  # Foo";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
     #[test]
     fn ruff_exemption_all() {
         let source = "# ruff: noqa";
@@ -1490,6 +1538,30 @@ mod tests {
         assert_lexed_ranges_match_slices(exemption, source);
     }
 
+    #[test]
+    fn ruff_noqa_no_code() {
+        let source = "# ruff: noqa:";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
+    #[test]
+    fn ruff_noqa_no_code_invalid_suffix() {
+        let source = "# ruff: noqa: foo";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
+    #[test]
+    fn ruff_noqa_no_code_trailing_content() {
+        let source = "# ruff: noqa:  # Foo";
+        let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
+        assert_debug_snapshot!(exemption);
+        assert_lexed_ranges_match_slices(exemption, source);
+    }
+
     #[test]
     fn flake8_exemption_all_no_space() {
         let source = "#flake8:noqa";

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__flake8_noqa_no_code.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__flake8_noqa_no_code_invalid_suffix.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__flake8_noqa_no_code_trailing_content.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__noqa_no_code.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: "Directive::try_extract(source, TextSize::default())"
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__noqa_no_code_invalid_suffix.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: "Directive::try_extract(source, TextSize::default())"
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__noqa_no_code_trailing_content.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: "Directive::try_extract(source, TextSize::default())"
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__ruff_noqa_no_code.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__ruff_noqa_no_code_invalid_suffix.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)

crates/ruff_linter/src/snapshots/ruff_linter__noqa__tests__ruff_noqa_no_code_trailing_content.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_linter/src/noqa.rs
+expression: exemption
+---
+Err(
+    MissingCodes,
+)