diff --git a/docker-compose.yml b/docker-compose.yml
index f22d956..1253e57 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,6 +6,7 @@ services:
     ports:
       - "127.0.0.1:5432:5432"
     environment:
+      - POSTGRES_USER=root
       - POSTGRES_HOST_AUTH_METHOD=trust
     volumes:
       - .data/postgresql-15/:/var/lib/postgresql
diff --git a/fixtures/diesel/postgres/diesel-postgres-structure.sql b/fixtures/diesel/postgres/diesel-postgres-structure.sql
new file mode 100644
index 0000000..e9930db
--- /dev/null
+++ b/fixtures/diesel/postgres/diesel-postgres-structure.sql
@@ -0,0 +1,104 @@
+--
+-- PostgreSQL database dump
+--
+
+-- Dumped from database version 15.2
+-- Dumped by pg_dump version 15.4 (Homebrew)
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+SET default_tablespace = '';
+
+SET default_table_access_method = heap;
+
+--
+-- Name: __diesel_schema_migrations; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.__diesel_schema_migrations (
+    version character varying(50) NOT NULL,
+    run_on timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+--
+-- Name: _sqlx_migrations; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public._sqlx_migrations (
+    version bigint NOT NULL,
+    description text NOT NULL,
+    installed_on timestamp with time zone DEFAULT now() NOT NULL,
+    success boolean NOT NULL,
+    checksum bytea NOT NULL,
+    execution_time bigint NOT NULL
+);
+
+
+--
+-- Name: diesel_users; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.diesel_users (
+    id text NOT NULL,
+    email text NOT NULL,
+    created_at timestamp with time zone DEFAULT now() NOT NULL
+);
+
+
+--
+-- Name: sqlx_users; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.sqlx_users (
+    id character varying(32) NOT NULL,
+    email text NOT NULL,
+    created_at timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+--
+-- Name: __diesel_schema_migrations __diesel_schema_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.__diesel_schema_migrations
+    ADD CONSTRAINT __diesel_schema_migrations_pkey PRIMARY KEY (version);
+
+
+--
+-- Name: _sqlx_migrations _sqlx_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public._sqlx_migrations
+    ADD CONSTRAINT _sqlx_migrations_pkey PRIMARY KEY (version);
+
+
+--
+-- Name: diesel_users diesel_users_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.diesel_users
+    ADD CONSTRAINT diesel_users_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: sqlx_users sqlx_users_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.sqlx_users
+    ADD CONSTRAINT sqlx_users_pkey PRIMARY KEY (id);
+
+
+--
+-- PostgreSQL database dump complete
+--
+
diff --git a/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/down.sql b/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/down.sql
new file mode 100644
index 0000000..291a97c
--- /dev/null
+++ b/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/down.sql
@@ -0,0 +1 @@
+-- This file should undo anything in `up.sql`
\ No newline at end of file
diff --git a/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/up.sql b/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/up.sql
new file mode 100644
index 0000000..ab93f65
--- /dev/null
+++ b/fixtures/diesel/postgres/migrations/2023-08-27-215620_add_users/up.sql
@@ -0,0 +1,5 @@
+CREATE TABLE diesel_users (
+  id TEXT PRIMARY KEY NOT NULL,
+  email TEXT NOT NULL,
+  created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
+);
diff --git a/fixtures/sqlx/postgres/migrations/20230827160610_add_users.sql b/fixtures/sqlx/postgres/migrations/20230827160610_add_users.sql
new file mode 100644
index 0000000..29f513e
--- /dev/null
+++ b/fixtures/sqlx/postgres/migrations/20230827160610_add_users.sql
@@ -0,0 +1,5 @@
+CREATE TABLE sqlx_users (
+  id VARCHAR(32) PRIMARY KEY NOT NULL,
+  email TEXT NOT NULL,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
diff --git a/fixtures/sqlx/postgres/sqlx-postgres-structure.sql b/fixtures/sqlx/postgres/sqlx-postgres-structure.sql
new file mode 100644
index 0000000..e9930db
--- /dev/null
+++ b/fixtures/sqlx/postgres/sqlx-postgres-structure.sql
@@ -0,0 +1,104 @@
+--
+-- PostgreSQL database dump
+--
+
+-- Dumped from database version 15.2
+-- Dumped by pg_dump version 15.4 (Homebrew)
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+SET default_tablespace = '';
+
+SET default_table_access_method = heap;
+
+--
+-- Name: __diesel_schema_migrations; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.__diesel_schema_migrations (
+    version character varying(50) NOT NULL,
+    run_on timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+--
+-- Name: _sqlx_migrations; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public._sqlx_migrations (
+    version bigint NOT NULL,
+    description text NOT NULL,
+    installed_on timestamp with time zone DEFAULT now() NOT NULL,
+    success boolean NOT NULL,
+    checksum bytea NOT NULL,
+    execution_time bigint NOT NULL
+);
+
+
+--
+-- Name: diesel_users; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.diesel_users (
+    id text NOT NULL,
+    email text NOT NULL,
+    created_at timestamp with time zone DEFAULT now() NOT NULL
+);
+
+
+--
+-- Name: sqlx_users; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.sqlx_users (
+    id character varying(32) NOT NULL,
+    email text NOT NULL,
+    created_at timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+--
+-- Name: __diesel_schema_migrations __diesel_schema_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.__diesel_schema_migrations
+    ADD CONSTRAINT __diesel_schema_migrations_pkey PRIMARY KEY (version);
+
+
+--
+-- Name: _sqlx_migrations _sqlx_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public._sqlx_migrations
+    ADD CONSTRAINT _sqlx_migrations_pkey PRIMARY KEY (version);
+
+
+--
+-- Name: diesel_users diesel_users_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.diesel_users
+    ADD CONSTRAINT diesel_users_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: sqlx_users sqlx_users_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.sqlx_users
+    ADD CONSTRAINT sqlx_users_pkey PRIMARY KEY (id);
+
+
+--
+-- PostgreSQL database dump complete
+--
+
diff --git a/src/postgres/mod.rs b/src/postgres/mod.rs
index 182f52a..f357d30 100644
--- a/src/postgres/mod.rs
+++ b/src/postgres/mod.rs
@@ -62,3 +62,44 @@ async fn migrate<P: AsRef<std::path::Path>>(
         .map(|_| ());
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    async fn call_write_structure_sql<M: AsRef<str>, D: AsRef<str>>(
+        fixtures_path: M,
+        destination_filename: D,
+    ) -> Result<(), crate::error::Error> {
+        let destination_path = std::env::temp_dir().join(destination_filename.as_ref());
+        let migrations_path = std::path::PathBuf::from(fixtures_path.as_ref()).join("migrations");
+        let _ = super::write_structure_sql(
+            super::DEFAULT_CONNECTION_URL,
+            migrations_path,
+            &destination_path,
+        )
+        .await?;
+        let expected = std::fs::read_to_string(dbg!(format!(
+            "./{}/{}",
+            fixtures_path.as_ref(),
+            destination_filename.as_ref()
+        )))?;
+        let contents = std::fs::read_to_string(destination_path)?;
+        assert_eq!(contents, expected);
+        Ok(())
+    }
+
+    #[cfg(all(feature = "sqlx", feature = "postgres"))]
+    #[tokio::test]
+    async fn test_write_structure_sql() -> Result<(), crate::error::Error> {
+        call_write_structure_sql("./fixtures/sqlx/postgres", "sqlx-postgres-structure.sql").await
+    }
+
+    #[cfg(all(feature = "diesel", feature = "postgres"))]
+    #[tokio::test]
+    async fn test_write_structure_sql() -> Result<(), crate::error::Error> {
+        call_write_structure_sql(
+            "./fixtures/diesel/postgres",
+            "diesel-postgres-structure.sql",
+        )
+        .await
+    }
+}
diff --git a/src/process.rs b/src/process.rs
index 36962a6..a4d846b 100644
--- a/src/process.rs
+++ b/src/process.rs
@@ -42,12 +42,10 @@ mod tests {
         Ok(())
     }
 
-    // IMPORTANT: The tests below this notice will fail if mysqldump is not found in the
-    // PATH.
     #[tokio::test]
     async fn test_run_found() -> Result<(), crate::Error> {
         use super::{run, Command};
-        let result = run(Command::new("mysqldump").arg("--version")).await;
+        let result = run(Command::new("which").arg("which")).await;
         assert!(matches!(result, Ok(())));
         Ok(())
     }
@@ -55,10 +53,10 @@ mod tests {
     #[tokio::test]
     async fn test_run_invalid_arguments() -> Result<(), crate::Error> {
         use super::{run, Command};
-        let result = run(Command::new("mysqldump").arg("--norberto")).await;
+        let result = run(Command::new("which").arg("--norberto")).await;
         assert!(matches!(
             result,
-            Err(crate::Error::CommandRunError(error_message)) if error_message == "output: \nstderr: mysqldump: [ERROR] unknown option '--norberto'.\n"));
+            Err(crate::Error::CommandRunError(error_message)) if error_message.contains("stderr: which:")));
         Ok(())
     }
 }