From c7b2d73810697e2b1f51c03195482a767778758a Mon Sep 17 00:00:00 2001
From: Skyler Hawthorne <skyler@dead10ck.com>
Date: Mon, 29 May 2023 00:49:49 -0400
Subject: [PATCH] backfill auto pair delete tests

---
 helix-term/tests/test/auto_pairs.rs | 549 ++++++++++++++++++++++++++++
 1 file changed, 549 insertions(+)

diff --git a/helix-term/tests/test/auto_pairs.rs b/helix-term/tests/test/auto_pairs.rs
index c921e2ae7..1768ec84f 100644
--- a/helix-term/tests/test/auto_pairs.rs
+++ b/helix-term/tests/test/auto_pairs.rs
@@ -567,3 +567,552 @@ async fn append_inside_nested_pair_multi() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_basic() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!("{}#[|{}]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("#[{}|]#", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_multi() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!("{}#[|{}]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("#[{}|]#", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_configured_multi_byte_chars() -> anyhow::Result<()> {
+    // NOTE: these are multi-byte Unicode characters
+    let pairs = hashmap!('„' => '“', '‚' => '‘', '「' => '」');
+
+    let config = Config {
+        editor: helix_view::editor::Config {
+            auto_pairs: AutoPairConfig::Pairs(pairs.clone()),
+            ..Default::default()
+        },
+        ..Default::default()
+    };
+
+    for (open, close) in pairs.iter() {
+        test_with_config(
+            AppBuilder::new().with_config(config.clone()),
+            (
+                format!("{}#[|{}]#{}", open, close, LINE_END),
+                "i<backspace>",
+                format!("#[{}|]#", LINE_END),
+            ),
+        )
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_after_word() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!("foo{}#[|{}]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("foo#[{}|]#", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_before_word() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        // sanity check unclosed pair delete
+        test((
+            format!("{}#[|f]#oo{}", pair.0, LINE_END),
+            "i<backspace>",
+            format!("#[|f]#oo{}", LINE_END),
+        ))
+        .await?;
+
+        // deleting the closing pair should NOT delete the whole pair
+        test((
+            format!("{}{}#[|f]#oo{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("{}#[|f]#oo{}", pair.0, LINE_END),
+        ))
+        .await?;
+
+        // deleting whole pair before word
+        test((
+            format!("{}#[|{}]#foo{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("#[f|]#oo{}", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_before_word_selection() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        // sanity check unclosed pair delete
+        test((
+            format!("{}#[|foo]#{}", pair.0, LINE_END),
+            "i<backspace>",
+            format!("#[foo|]#{}", LINE_END),
+        ))
+        .await?;
+
+        // deleting the closing pair should NOT delete the whole pair
+        test((
+            format!("{}{}#[|foo]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("{}#[foo|]#{}", pair.0, LINE_END),
+        ))
+        .await?;
+
+        // deleting whole pair before word
+        test((
+            format!("{}#[|{}foo]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("#[foo|]#{}", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_before_word_selection_trailing_word() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!("foo{}#[|{} wor]#{}", pair.0, pair.1, LINE_END),
+            "i<backspace>",
+            format!("foo#[ wor|]#{}", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_before_eol() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "{eol}{open}#[|{close}]#{eol}",
+                eol = LINE_END,
+                open = pair.0,
+                close = pair.1
+            ),
+            "i<backspace>",
+            format!("{0}#[{0}|]#", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_auto_pairs_disabled() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test_with_config(
+            AppBuilder::new().with_config(Config {
+                editor: helix_view::editor::Config {
+                    auto_pairs: AutoPairConfig::Enable(false),
+                    ..Default::default()
+                },
+                ..Default::default()
+            }),
+            (
+                format!("{}#[|{}]#{}", pair.0, pair.1, LINE_END),
+                "i<backspace>",
+                format!("#[|{}]#{}", pair.1, LINE_END),
+            ),
+        )
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_multi_range() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "{open}#[|{close}]#{eol}{open}#(|{close})#{eol}{open}#(|{close})#{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "i<backspace>",
+            format!("#[{eol}|]##({eol}|)##({eol}|)#", eol = LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_before_multi_code_point_graphemes() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!("hello {}#[|👨‍👩‍👧‍👦]# goodbye{}", pair.1, LINE_END),
+            "i<backspace>",
+            format!("hello #[|👨‍👩‍👧‍👦]# goodbye{}", LINE_END),
+        ))
+        .await?;
+
+        test((
+            format!(
+                "hello {}{}#[|👨‍👩‍👧‍👦]# goodbye{}",
+                pair.0, pair.1, LINE_END
+            ),
+            "i<backspace>",
+            format!("hello {}#[|👨‍👩‍👧‍👦]# goodbye{}", pair.0, LINE_END),
+        ))
+        .await?;
+
+        test((
+            format!(
+                "hello {}#[|{}]#👨‍👩‍👧‍👦 goodbye{}",
+                pair.0, pair.1, LINE_END
+            ),
+            "i<backspace>",
+            format!("hello #[👨‍👩‍👧‍👦|]# goodbye{}", LINE_END),
+        ))
+        .await?;
+
+        test((
+            format!(
+                "hello {}#[|{}👨‍👩‍👧‍👦]# goodbye{}",
+                pair.0, pair.1, LINE_END
+            ),
+            "i<backspace>",
+            format!("hello #[👨‍👩‍👧‍👦|]# goodbye{}", LINE_END),
+        ))
+        .await?;
+    }
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_at_end_of_document() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test(TestCase {
+            in_text: format!("{}{}{}", LINE_END, pair.0, pair.1),
+            in_selection: Selection::single(LINE_END.len() + 1, LINE_END.len() + 2),
+            in_keys: String::from("i<backspace>"),
+            out_text: String::from(LINE_END),
+            out_selection: Selection::single(LINE_END.len(), LINE_END.len()),
+        })
+        .await?;
+
+        test(TestCase {
+            in_text: format!("foo{}{}{}", LINE_END, pair.0, pair.1),
+            in_selection: Selection::single(LINE_END.len() + 4, LINE_END.len() + 5),
+            in_keys: String::from("i<backspace>"),
+            out_text: format!("foo{}", LINE_END),
+            out_selection: Selection::single(3 + LINE_END.len(), 3 + LINE_END.len()),
+        })
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_nested_open_inside_pair() -> anyhow::Result<()> {
+    for pair in differing_pairs() {
+        test((
+            format!(
+                "{open}{open}#[|{close}]#{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "i<backspace>",
+            format!(
+                "{open}#[{close}|]#{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_nested_open_inside_pair_multi() -> anyhow::Result<()> {
+    for outer_pair in DEFAULT_PAIRS {
+        for inner_pair in DEFAULT_PAIRS {
+            if inner_pair.0 == outer_pair.0 {
+                continue;
+            }
+
+            test((
+                format!(
+                    "{outer_open}{inner_open}#[|{inner_close}]#{outer_close}{eol}{outer_open}{inner_open}#(|{inner_close})#{outer_close}{eol}{outer_open}{inner_open}#(|{inner_close})#{outer_close}{eol}",
+                    outer_open = outer_pair.0,
+                    outer_close = outer_pair.1,
+                    inner_open = inner_pair.0,
+                    inner_close = inner_pair.1,
+                    eol = LINE_END
+                ),
+                "i<backspace>",
+                format!(
+                    "{outer_open}#[{outer_close}|]#{eol}{outer_open}#({outer_close}|)#{eol}{outer_open}#({outer_close}|)#{eol}",
+                    outer_open = outer_pair.0,
+                    outer_close = outer_pair.1,
+                    eol = LINE_END
+                ),
+            ))
+            .await?;
+        }
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_basic() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "#[{eol}{open}|]#{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!("#[{eol}{eol}|]#", eol = LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_multi_range() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "#[ {open}|]#{close}{eol}#( {open}|)#{close}{eol}#( {open}|)#{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!("#[ {eol}|]##( {eol}|)##( {eol}|)#", eol = LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_end_of_word() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "fo#[o{open}|]#{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!("fo#[o{}|]#", LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_mixed_dedent() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            helpers::platform_line(&format!(
+                indoc! {"\
+                    bar = {}#[|{}]#
+                        #(|\n)#
+                    foo#(|\n)#
+                "},
+                pair.0, pair.1,
+            )),
+            "i<backspace>",
+            helpers::platform_line(indoc! {"\
+                bar = #[\n|]#
+                #(|\n)#
+                fo#(|\n)#
+            "}),
+        ))
+        .await?;
+
+        test((
+            helpers::platform_line(&format!(
+                indoc! {"\
+                    bar = {}#[|{}woop]#
+                        #(|word)#
+                    fo#(|o)#
+                "},
+                pair.0, pair.1,
+            )),
+            "i<backspace>",
+            helpers::platform_line(indoc! {"\
+                bar = #[woop|]#
+                #(|word)#
+                f#(|o)#
+            "}),
+        ))
+        .await?;
+
+        // delete from the right with append
+        test((
+            helpers::platform_line(&format!(
+                indoc! {"\
+                    bar = #[|woop{}]#{}
+                    #(|   )# word
+                    #(|fo)#o
+                "},
+                pair.0, pair.1,
+            )),
+            "a<backspace>",
+            helpers::platform_line(indoc! {"\
+                bar = #[woop|]#
+                #(|w)#ord
+                #(|fo)#
+            "}),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_end_of_word_multi() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "fo#[o{open}|]#{close}{eol}fo#(o{open}|)#{close}{eol}fo#(o{open}|)#{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!("fo#[o{eol}|]#fo#(o{eol}|)#fo#(o{eol}|)#", eol = LINE_END),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_inside_nested_pair() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "f#[oo{open}{open}|]#{close}{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!(
+                "f#[oo{open}{close}|]#{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_middle_of_word() -> anyhow::Result<()> {
+    for pair in DEFAULT_PAIRS {
+        test((
+            format!(
+                "f#[oo{open}{open}|]#{close}{close}{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+            "a<backspace>",
+            format!(
+                "f#[oo{open}{close}|]#{eol}",
+                open = pair.0,
+                close = pair.1,
+                eol = LINE_END
+            ),
+        ))
+        .await?;
+    }
+
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn delete_append_inside_nested_pair_multi() -> anyhow::Result<()> {
+    for outer_pair in DEFAULT_PAIRS {
+        for inner_pair in DEFAULT_PAIRS {
+            if inner_pair.0 == outer_pair.0 {
+                continue;
+            }
+
+            test((
+                format!(
+                    "f#[oo{outer_open}{inner_open}|]#{inner_close}{outer_close}{eol}f#(oo{outer_open}{inner_open}|)#{inner_close}{outer_close}{eol}f#(oo{outer_open}{inner_open}|)#{inner_close}{outer_close}{eol}",
+                    outer_open = outer_pair.0,
+                    outer_close = outer_pair.1,
+                    inner_open = inner_pair.0,
+                    inner_close = inner_pair.1,
+                    eol = LINE_END
+                ),
+                "a<backspace>",
+                format!(
+                    "f#[oo{outer_open}{outer_close}|]#{eol}f#(oo{outer_open}{outer_close}|)#{eol}f#(oo{outer_open}{outer_close}|)#{eol}",
+                    outer_open = outer_pair.0,
+                    outer_close = outer_pair.1,
+                    eol = LINE_END
+                ),
+            ))
+            .await?;
+        }
+    }
+
+    Ok(())
+}