Replace console ANSI utilities with native utilities and parser based on vte

src/ansi/console_tests.rs

@@ -0,0 +1,75 @@
+// This file contains some unit tests copied from the `console` project:
+// https://github.com/mitsuhiko/console
+//
+// The MIT License (MIT)
+
+// Copyright (c) 2017 Armin Ronacher <[email protected]>
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+#[cfg(test)]
+mod tests {
+    use console::{self, style};
+
+    use crate::ansi::{measure_text_width, truncate_str};
+
+    #[test]
+    fn test_text_width() {
+        let s = style("foo")
+            .red()
+            .on_black()
+            .bold()
+            .force_styling(true)
+            .to_string();
+        assert_eq!(measure_text_width(&s), 3);
+    }
+
+    #[test]
+    fn test_truncate_str() {
+        let s = format!("foo {}", style("bar").red().force_styling(true));
+        assert_eq!(
+            &truncate_str(&s, 5, ""),
+            &format!("foo {}", style("b").red().force_styling(true))
+        );
+        let s = format!("foo {}", style("bar").red().force_styling(true));
+        // DED: I'm changing this test assertion: delta does not move `!` inside the styled region.
+        // assert_eq!(
+        //     &truncate_str(&s, 5, "!"),
+        //     &format!("foo {}", style("!").red().force_styling(true))
+        // );
+        assert_eq!(
+            &truncate_str(&s, 5, "!"),
+            &format!("foo {}!", style("").red().force_styling(true))
+        );
+        let s = format!("foo {} baz", style("bar").red().force_styling(true));
+        assert_eq!(
+            &truncate_str(&s, 10, "..."),
+            &format!("foo {}...", style("bar").red().force_styling(true))
+        );
+        let s = format!("foo {}", style("バー").red().force_styling(true));
+        assert_eq!(
+            &truncate_str(&s, 5, ""),
+            &format!("foo {}", style("").red().force_styling(true))
+        );
+        let s = format!("foo {}", style("バー").red().force_styling(true));
+        assert_eq!(
+            &truncate_str(&s, 6, ""),
+            &format!("foo {}", style("バ").red().force_styling(true))
+        );
+    }
+
+    #[test]
+    fn test_truncate_str_no_ansi() {
+        assert_eq!(&truncate_str("foo bar", 5, ""), "foo b");
+        assert_eq!(&truncate_str("foo bar", 5, "!"), "foo !");
+        assert_eq!(&truncate_str("foo bar baz", 10, "..."), "foo bar...");
+    }
+}