From 6906cd267df73018df7600e63086073dee057e85 Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Thu, 19 Jan 2023 14:34:04 -0600
Subject: [PATCH] test(toml): Show trailing comma is fixed

With #470, we more reliably generate valid output.

Fixes #387
---
 crates/toml/tests/testsuite/tables_last.rs | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/crates/toml/tests/testsuite/tables_last.rs b/crates/toml/tests/testsuite/tables_last.rs
index 3339e0a0..fadadd1c 100644
--- a/crates/toml/tests/testsuite/tables_last.rs
+++ b/crates/toml/tests/testsuite/tables_last.rs
@@ -1,5 +1,6 @@
 use std::collections::HashMap;
 
+use serde::Deserialize;
 use serde::Serialize;
 
 #[test]
@@ -28,3 +29,81 @@ fn always_works() {
 
     toml::to_string(&a).unwrap();
 }
+
+#[test]
+fn vec_of_vec_issue_387() {
+    #[derive(Deserialize, Serialize, Debug)]
+    struct Glyph {
+        components: Vec<Component>,
+        contours: Vec<Contour>,
+    }
+
+    #[derive(Deserialize, Serialize, Debug)]
+    struct Point {
+        x: f64,
+        y: f64,
+        pt_type: String,
+    }
+
+    type Contour = Vec<Point>;
+
+    #[derive(Deserialize, Serialize, Debug)]
+    struct Component {
+        base: String,
+        transform: (f64, f64, f64, f64, f64, f64),
+    }
+
+    let comp1 = Component {
+        base: "b".to_string(),
+        transform: (1.0, 0.0, 0.0, 1.0, 0.0, 0.0),
+    };
+    let comp2 = Component {
+        base: "c".to_string(),
+        transform: (1.0, 0.0, 0.0, 1.0, 0.0, 0.0),
+    };
+    let components = vec![comp1, comp2];
+
+    let contours = vec![
+        vec![
+            Point {
+                x: 3.0,
+                y: 4.0,
+                pt_type: "line".to_string(),
+            },
+            Point {
+                x: 5.0,
+                y: 6.0,
+                pt_type: "line".to_string(),
+            },
+        ],
+        vec![
+            Point {
+                x: 0.0,
+                y: 0.0,
+                pt_type: "move".to_string(),
+            },
+            Point {
+                x: 7.0,
+                y: 9.0,
+                pt_type: "offcurve".to_string(),
+            },
+            Point {
+                x: 8.0,
+                y: 10.0,
+                pt_type: "offcurve".to_string(),
+            },
+            Point {
+                x: 11.0,
+                y: 12.0,
+                pt_type: "curve".to_string(),
+            },
+        ],
+    ];
+    let g1 = Glyph {
+        contours,
+        components,
+    };
+
+    let s = toml::to_string_pretty(&g1).unwrap();
+    let _g2: Glyph = toml::from_str(&s).unwrap();
+}