tests: show issue 27

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

Cargo.lock

@@ -107,6 +107,25 @@ mod tests {
     [[build-system.a]] # empty table within the array
     [[build-system.a]]
     name = "Nail"
+    "#},
+        false
+    )]
+    #[case::reorder(
+        indoc ! {r#"
+    [build-system]
+    requires = [
+      "hatchling",
+    ]
+    build-backend = "hatchling.build"
+
+    "#},
+        indoc ! {r#"
+    [build-system]
+    build-backend = "hatchling.build"
+    requires = [
+      "hatchling",
+    ]
+
     "#},
         false
     )]

rust/src/build_system.rs

@@ -316,3 +316,24 @@ pub fn collapse_sub_tables(tables: &mut Tables, name: &str) {
         sub.clear();
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    use taplo::parser::parse;
+
+    #[test]
+    fn test_reorder() {
+        let root_ast = parse("[A]\nb = 1\na = 1\n\n[B]\nb = 2")
+            .into_syntax()
+            .clone_for_update();
+        let mut tables = Tables::from_ast(&root_ast);
+        {
+            let table = &mut tables.get("A").unwrap().first().unwrap().borrow_mut();
+            reorder_table_keys(table, &["", "a", "b"]);
+        }
+        tables.reorder(&root_ast, &["B", "A"]);
+        assert_eq!(root_ast.to_string(), "[B]\nb = 2\n\n[A]\na = 1\n\nb = 1\n\n");
+    }
+}

rust/src/helpers/table.rs

@@ -272,6 +272,29 @@ mod tests {
         true,
         (3, 8)
     )]
+    #[case::space_issue_27(
+        indoc ! {r#"
+    [build-system]
+    requires = [
+      "hatchling",
+    ]
+    build-backend = "hatchling.build"
+
+    [project]
+    "#},
+        indoc ! {r#"
+    [build-system]
+    build-backend = "hatchling.build"
+    requires = [
+      "hatchling",
+    ]
+
+    [project]
+    "#},
+        2,
+        true,
+        (3, 8)
+    )]
     fn test_format_toml(
         #[case] start: &str,
         #[case] expected: &str,

rust/src/main.rs

@@ -7,6 +7,12 @@
 
 def test_format_toml() -> None:
     txt = """
+    [build-system]
+    requires = [
+        "hatchling",
+    ]
+    build-backend = "hatchling.build"
+
     [project]
     keywords = [
       "A",
@@ -32,6 +38,12 @@ def test_format_toml() -> None:
     res = format_toml(dedent(txt), settings)
 
     expected = """\
+    [build-system]
+    build-backend = "hatchling.build"
+    requires = [
+        "hatchling",
+    ]
+
     [project]
     keywords = [
         "A",