test: Highlight source on all AnnotationKind

tests/color/highlight_source.rs

@@ -0,0 +1,43 @@
+use annotate_snippets::{renderer::DecorStyle, AnnotationKind, Level, Renderer, Snippet};
+
+use snapbox::{assert_data_eq, file};
+
+#[test]
+fn case() {
+    let source = r#"
+[workspace.lints.rust]
+rust_2018_idioms = { level = "warn", priority = -1 }
+unnameable_types = "warn"
+unreachable_pub = "warn"
+unsafe_op_in_unsafe_fn = "warn"
+unused_lifetimes = "warn"
+unused_macro_rules = "warn"
+unused_qualifications = "warn"
+"#;
+
+    let input = &[Level::ERROR
+        .primary_title("all annotation kinds have a highlighted source")
+        .element(
+            Snippet::source(source)
+                .path("Cargo.toml")
+                .annotation(
+                    AnnotationKind::Primary
+                        .span(214..235)
+                        .highlight_source(true),
+                )
+                .annotation(
+                    AnnotationKind::Context
+                        .span(238..244)
+                        .highlight_source(true),
+                )
+                .annotation(AnnotationKind::Visible.span(2..22).highlight_source(true)),
+        )];
+
+    let expected_ascii = file!["highlight_source.ascii.term.svg": TermSvg];
+    let renderer = Renderer::styled();
+    assert_data_eq!(renderer.render(input), expected_ascii);
+
+    let expected_unicode = file!["highlight_source.unicode.term.svg": TermSvg];
+    let renderer = renderer.decor_style(DecorStyle::Unicode);
+    assert_data_eq!(renderer.render(input), expected_unicode);
+}

tests/color/main.rs

@@ -9,6 +9,7 @@ mod fold_ann_multiline;
 mod fold_bad_origin_line;
 mod fold_leading;
 mod fold_trailing;
+mod highlight_source;
 mod issue_9;
 mod multiline_removal_suggestion;
 mod multiple_annotations;