test: Snippet with no path

Author: Muscraft

tests/formatter.rs

@@ -2753,3 +2753,71 @@ fn main() {
     let renderer = Renderer::plain();
     renderer.render(input);
 }
+
+#[test]
+fn snippet_no_path() {
+    // Taken from: https://docs.python.org/3/library/typing.html#annotating-callable-objects
+
+    let source = "def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...";
+    let input = &[Group::with_title(Level::ERROR.title("")).element(
+        Snippet::source(source).annotation(AnnotationKind::Primary.span(4..12).label("annotation")),
+    )];
+
+    let expected_ascii = str![[r#"
+error: 
+  |
+1 | def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  |     ^^^^^^^^ annotation
+"#]];
+    let renderer = Renderer::plain();
+    assert_data_eq!(renderer.render(input), expected_ascii);
+
+    let expected_unicode = str![[r#"
+error: 
+  │
+1 │ def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  ╰╴    ━━━━━━━━ annotation
+"#]];
+    let renderer = Renderer::plain().theme(OutputTheme::Unicode);
+    assert_data_eq!(renderer.render(input), expected_unicode);
+}
+
+#[test]
+fn snippet_no_path2() {
+    // Taken from: https://docs.python.org/3/library/typing.html#annotating-callable-objects
+
+    let source = "def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...";
+    let input = &[Group::with_title(Level::ERROR.title(""))
+        .element(
+            Snippet::source(source)
+                .annotation(AnnotationKind::Primary.span(4..12).label("annotation")),
+        )
+        .element(
+            Snippet::source(source)
+                .annotation(AnnotationKind::Primary.span(4..12).label("annotation")),
+        )];
+
+    let expected_ascii = str![[r#"
+error: 
+  |
+1 | def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  |     ^^^^^^^^ annotation
+  |
+1 | def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  |     ^^^^^^^^ annotation
+"#]];
+    let renderer = Renderer::plain();
+    assert_data_eq!(renderer.render(input), expected_ascii);
+
+    let expected_unicode = str![[r#"
+error: 
+  │
+1 │ def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  │     ━━━━━━━━ annotation
+  │
+1 │ def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+  ╰╴    ━━━━━━━━ annotation
+"#]];
+    let renderer = Renderer::plain().theme(OutputTheme::Unicode);
+    assert_data_eq!(renderer.render(input), expected_unicode);
+}