feat: tests for list command

docker-compose.yml

@@ -0,0 +1,18 @@
+version: '3'
+
+services:
+  postgres:
+    image: postgres
+    container_name: migra.postgres
+    environment:
+      POSTGRES_DB: "migra_tests"
+      POSTGRES_USER: "postgres"
+      POSTGRES_PASSWORD: "postgres"
+    volumes:
+      - postgres_data:/var/lib/postgres/data
+    ports:
+      - 6000:5432
+
+volumes:
+  postgres_data:
+    driver: local

migra-cli/Cargo.toml

@@ -22,3 +22,7 @@ serde = { version = "1.0", features = ["derive"] }
 toml = "0.5"
 chrono = "0.4.19"
 postgres = "0.19.0"
+
+[dev-dependencies]
+assert_cmd = "1.0.3"
+predicates = "1.0.7"

migra-cli/tests/common/mod.rs

@@ -0,0 +1,31 @@
+pub use assert_cmd::prelude::*;
+pub use predicates::str::contains;
+pub use std::process::Command;
+
+pub type TestResult = std::result::Result<(), Box<dyn std::error::Error>>;
+
+pub const ROOT_PATH: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/tests/data/");
+
+pub fn path_to_file(file_name: &'static str) -> String {
+    ROOT_PATH.to_owned() + file_name
+}
+
+pub const DATABASE_URL_DEFAULT_ENV_NAME: &str = "DATABASE_URL";
+pub const DATABASE_URL_ENV_VALUE: &str = "postgres://postgres:postgres@localhost:6000/migra_tests";
+
+pub struct Env {
+    key: &'static str
+}
+
+impl Env {
+    pub fn new(key: &'static str, value: &'static str) -> Self {
+        std::env::set_var(key, value);
+        Env { key }
+    }
+}
+
+impl Drop for Env {
+    fn drop(&mut self) {
+        std::env::remove_var(self.key);
+    }
+}

migra-cli/tests/data/Migra_env_empty.toml

@@ -0,0 +1,4 @@
+directory = "database"
+
+[database]
+connection = "$DB_URL"

migra-cli/tests/data/Migra_url_empty.toml

@@ -0,0 +1,4 @@
+directory = "database"
+
+[database]
+connection = "postgres://postgres:postgres@localhost:6000/migra_tests"

migra-cli/tests/lib.rs

@@ -0,0 +1,3 @@
+mod common;
+
+pub use common::*;

migra-cli/tests/list.rs

@@ -0,0 +1,83 @@
+mod common;
+
+use std::io::Write;
+use common::*;
+
+#[test]
+fn empty_migration_list() -> TestResult {
+    Command::cargo_bin("migra")?
+        .arg("ls")
+        .assert()
+        .success()
+        .stdout(contains(
+            r#"Missed "DATABASE_URL" environment variable
+No connection to database
+
+Pending migrations:
+—"#,
+        ));
+    Ok(())
+}
+
+#[test]
+fn empty_migration_list_with_db() -> TestResult {
+    let env = Env::new(DATABASE_URL_DEFAULT_ENV_NAME, DATABASE_URL_ENV_VALUE);
+
+    Command::cargo_bin("migra")?
+        .arg("ls")
+        .assert()
+        .success()
+        .stdout(contains(
+            r#"Applied migrations:
+—
+
+Pending migrations:
+—"#,
+        ));
+
+    drop(env);
+
+    Ok(())
+}
+
+#[test]
+fn empty_migration_list_with_url_in_manifest() -> TestResult {
+    Command::cargo_bin("migra")?
+        .arg("-c")
+        .arg(path_to_file("Migra_url_empty.toml"))
+        .arg("ls")
+        .assert()
+        .success()
+        .stdout(contains(
+            r#"Applied migrations:
+—
+
+Pending migrations:
+—"#,
+        ));
+
+    Ok(())
+}
+
+#[test]
+fn empty_migration_list_with_env_in_manifest() -> TestResult {
+    let env = Env::new("DB_URL", DATABASE_URL_ENV_VALUE);
+
+    Command::cargo_bin("migra")?
+        .arg("-c")
+        .arg(path_to_file("Migra_env_empty.toml"))
+        .arg("ls")
+        .assert()
+        .success()
+        .stdout(contains(
+            r#"Applied migrations:
+—
+
+Pending migrations:
+—"#,
+        ));
+
+    drop(env);
+
+    Ok(())
+}