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test_api_args.rs
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test_api_args.rs
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use crate::{logging, mssql, mysql, postgres, Capabilities, Tags};
use enumflags2::BitFlags;
use once_cell::sync::Lazy;
use quaint::single::Quaint;
use std::{fmt::Display, io::Write as _};
#[derive(Debug)]
pub(crate) struct DbUnderTest {
pub(crate) capabilities: BitFlags<Capabilities>,
pub(crate) database_url: String,
shadow_database_url: Option<String>,
provider: &'static str,
pub(crate) tags: BitFlags<Tags>,
}
const MISSING_TEST_DATABASE_URL_MSG: &str = r#"
Missing TEST_DATABASE_URL from environment.
If you are developing with the docker-compose based setup, you can find the environment variables under .test_database_urls at the project root.
Example usage:
source .test_database_urls/mysql_5_6
"#;
static DB_UNDER_TEST: Lazy<Result<DbUnderTest, String>> = Lazy::new(|| {
let database_url = if std::env::var("IS_BUILDKITE").is_ok() {
"sqlite".to_owned()
} else {
std::env::var("TEST_DATABASE_URL").map_err(|_| MISSING_TEST_DATABASE_URL_MSG.to_owned())?
};
let shadow_database_url = std::env::var("TEST_SHADOW_DATABASE_URL").ok();
let prefix = database_url
.find(':')
.map(|prefix_end| &database_url[..prefix_end])
.unwrap_or_else(|| database_url.as_str());
logging::init_logger();
match prefix {
"file" | "sqlite" => Ok(DbUnderTest {
database_url,
tags: Tags::Sqlite.into(),
capabilities: Capabilities::CreateDatabase.into(),
provider: "sqlite",
shadow_database_url,
}),
"mysql" => {
let tags = mysql::get_mysql_tags(&database_url)?;
let mut capabilities = Capabilities::Enums | Capabilities::Json;
if tags.contains(Tags::Vitess) {
capabilities |= Capabilities::CreateDatabase;
}
Ok(DbUnderTest {
tags,
database_url,
capabilities,
provider: "mysql",
shadow_database_url,
})
}
"postgresql" | "postgres" => Ok({
let tags = postgres::get_postgres_tags(&database_url)?;
let provider = if tags.contains(Tags::CockroachDb) {
"cockroachdb"
} else {
"postgresql"
};
DbUnderTest {
tags,
database_url,
capabilities: Capabilities::Enums
| Capabilities::Json
| Capabilities::ScalarLists
| Capabilities::CreateDatabase,
provider,
shadow_database_url,
}
}),
"sqlserver" => Ok(DbUnderTest {
tags: mssql::get_mssql_tags(&database_url)?,
database_url,
capabilities: Capabilities::CreateDatabase.into(),
provider: "sqlserver",
shadow_database_url,
}),
_ => Err("Unknown database URL".into()),
}
});
/// Crate-public interface to the global test database state.
pub(crate) fn db_under_test() -> &'static DbUnderTest {
match DB_UNDER_TEST.as_ref() {
Ok(db) => db,
Err(explanation) => {
let stderr = std::io::stderr();
let mut sink = stderr.lock();
sink.write_all(explanation.as_bytes()).unwrap();
sink.write_all(b"\n").unwrap();
std::process::exit(1)
}
}
}
/// Context for test initialization.
#[derive(Debug)]
pub struct TestApiArgs {
test_function_name: &'static str,
preview_features: &'static [&'static str],
namespaces: &'static [&'static str],
db: &'static DbUnderTest,
}
const EMPTY_PREVIEW_FEATURES: &[&str] = &[];
impl TestApiArgs {
pub fn new(
test_function_name: &'static str,
preview_features: &'static [&'static str],
namespaces: &'static [&'static str],
) -> Self {
TestApiArgs {
test_function_name,
preview_features,
namespaces,
db: db_under_test(),
}
}
pub fn preview_features(&self) -> &'static [&'static str] {
self.preview_features
}
pub fn namespaces(&self) -> &'static [&'static str] {
self.namespaces
}
pub fn test_function_name(&self) -> &'static str {
self.test_function_name
}
pub fn capabilities(&self) -> BitFlags<Capabilities> {
self.db.capabilities
}
pub async fn create_mssql_database(&self) -> (Quaint, String) {
mssql::init_mssql_database(self.database_url(), self.test_function_name)
.await
.unwrap()
}
pub async fn create_mysql_database(&self) -> (&'static str, String) {
mysql::create_mysql_database(self.database_url(), self.test_function_name)
.await
.unwrap()
}
pub async fn create_postgres_database(&self) -> (&'static str, Quaint, String) {
let (q, cs) = postgres::create_postgres_database(self.database_url(), self.test_function_name())
.await
.unwrap();
(self.test_function_name(), q, cs)
}
pub fn database_url(&self) -> &str {
self.db.database_url.as_str()
}
pub fn datasource_block<'a>(&'a self, url: &'a str, params: &'a [(&'a str, &'a str)]) -> DatasourceBlock<'a> {
DatasourceBlock {
provider: self.db.provider,
url,
params,
preview_features: EMPTY_PREVIEW_FEATURES,
}
}
pub fn provider(&self) -> &str {
self.db.provider
}
pub fn shadow_database_url(&self) -> Option<&'static str> {
self.db.shadow_database_url.as_deref()
}
pub fn tags(&self) -> BitFlags<Tags> {
self.db.tags
}
}
pub struct DatasourceBlock<'a> {
provider: &'a str,
url: &'a str,
params: &'a [(&'a str, &'a str)],
preview_features: &'static [&'static str],
}
impl<'a> DatasourceBlock<'a> {
pub fn url(&self) -> &str {
self.url
}
}
fn generator_block(preview_features: &'static [&'static str]) -> String {
let preview_features: Vec<String> = preview_features.iter().map(|pf| format!(r#""{}""#, pf)).collect();
let preview_feature_string = if preview_features.is_empty() {
"".to_string()
} else {
format!("\npreviewFeatures = [{}]", preview_features.join(", "))
};
format!(
r#"generator generated_test_preview_flags {{
provider = "prisma-client-js"{}
}}"#,
preview_feature_string
)
}
impl Display for DatasourceBlock<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
if !self.preview_features.is_empty() {
f.write_str(&generator_block(self.preview_features))?;
f.write_str("\n")?;
};
f.write_str("datasource db {\n provider = \"")?;
f.write_str(self.provider)?;
f.write_str("\"\n url = \"")?;
f.write_str(self.url)?;
f.write_str("\"\n")?;
for (param_name, param_value) in self.params {
f.write_str(" ")?;
f.write_str(param_name)?;
f.write_str(" = ")?;
f.write_str(param_value)?;
f.write_str("\n")?;
}
f.write_str("}")
}
}