Actually output Unsigned types in print-schema

This got missed in the original PR.

Fixes diesel-rs#1642.

Author: sgrif

CHANGELOG.md

@@ -12,6 +12,11 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
 
 [record-1-3-0]: http://docs.diesel.rs/diesel/pg/types/sql_types/struct.Record.html
 
+### Fixed
+
+* `diesel print-schema` and `infer_schema!` now properly handle unsigned types
+  in MySQL
+
 ## [1.2.2] - 2018-04-12
 
 ### Changed

diesel_cli/tests/print_schema.rs

@@ -69,6 +69,12 @@ fn print_schema_column_renaming() {
     test_print_schema("print_schema_column_renaming", vec!["--with-docs"]);
 }
 
+#[test]
+#[cfg(feature = "mysql")]
+fn print_schema_unsigned() {
+    test_print_schema("print_schema_unsigned", vec!["--with-docs"]);
+}
+
 #[cfg(feature = "sqlite")]
 const BACKEND: &str = "sqlite";
 #[cfg(feature = "postgres")]

diesel_cli/tests/print_schema/print_schema_unsigned/diesel.toml

@@ -0,0 +1,3 @@
+[print_schema]
+file = "src/schema.rs"
+with_docs = true

diesel_cli/tests/print_schema/print_schema_unsigned/mysql/expected.rs

@@ -0,0 +1,38 @@
+table! {
+    /// Representation of the `users1` table.
+    ///
+    /// (Automatically generated by Diesel.)
+    users1 (id) {
+        /// The `id` column of the `users1` table.
+        ///
+        /// Its SQL type is `Unsigned<Integer>`.
+        ///
+        /// (Automatically generated by Diesel.)
+        id -> Unsigned<Integer>,
+        /// The `x` column of the `users1` table.
+        ///
+        /// Its SQL type is `Nullable<Unsigned<Integer>>`.
+        ///
+        /// (Automatically generated by Diesel.)
+        x -> Nullable<Unsigned<Integer>>,
+    }
+}
+
+table! {
+    /// Representation of the `users2` table.
+    ///
+    /// (Automatically generated by Diesel.)
+    users2 (id) {
+        /// The `id` column of the `users2` table.
+        ///
+        /// Its SQL type is `Integer`.
+        ///
+        /// (Automatically generated by Diesel.)
+        id -> Integer,
+    }
+}
+
+allow_tables_to_appear_in_same_query!(
+    users1,
+    users2,
+);

diesel_cli/tests/print_schema/print_schema_unsigned/mysql/schema.sql

@@ -0,0 +1,2 @@
+CREATE TABLE users1 (id INTEGER UNSIGNED PRIMARY KEY, x INTEGER UNSIGNED);
+CREATE TABLE users2 (id INTEGER PRIMARY KEY);

diesel_infer_schema/infer_schema_internals/src/data_structures.rs

@@ -34,7 +34,13 @@ impl fmt::Display for ColumnType {
         if self.is_array {
             write!(out, "Array<")?;
         }
+        if self.is_unsigned {
+            write!(out, "Unsigned<")?;
+        }
         write!(out, "{}", self.rust_name)?;
+        if self.is_unsigned {
+            write!(out, ">")?;
+        }
         if self.is_array {
             write!(out, ">")?;
         }