db_postgres: add migration test

db_postgres_test.go

@@ -0,0 +1,104 @@
+package soju
+
+import (
+	"database/sql"
+	"os"
+	"testing"
+)
+
+// PostgreSQL version 0 schema. DO NOT EDIT.
+const postgresV0Schema = `
+CREATE TABLE "Config" (
+	id SMALLINT PRIMARY KEY,
+	version INTEGER NOT NULL,
+	CHECK(id = 1)
+);
+
+INSERT INTO "Config" (id, version) VALUES (1, 1);
+
+CREATE TABLE "User" (
+	id SERIAL PRIMARY KEY,
+	username VARCHAR(255) NOT NULL UNIQUE,
+	password VARCHAR(255),
+	admin BOOLEAN NOT NULL DEFAULT FALSE,
+	realname VARCHAR(255)
+);
+
+CREATE TABLE "Network" (
+	id SERIAL PRIMARY KEY,
+	name VARCHAR(255),
+	"user" INTEGER NOT NULL REFERENCES "User"(id) ON DELETE CASCADE,
+	addr VARCHAR(255) NOT NULL,
+	nick VARCHAR(255) NOT NULL,
+	username VARCHAR(255),
+	realname VARCHAR(255),
+	pass VARCHAR(255),
+	connect_commands VARCHAR(1023),
+	sasl_mechanism VARCHAR(255),
+	sasl_plain_username VARCHAR(255),
+	sasl_plain_password VARCHAR(255),
+	sasl_external_cert BYTEA DEFAULT NULL,
+	sasl_external_key BYTEA DEFAULT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT TRUE,
+	UNIQUE("user", addr, nick),
+	UNIQUE("user", name)
+);
+
+CREATE TABLE "Channel" (
+	id SERIAL PRIMARY KEY,
+	network INTEGER NOT NULL REFERENCES "Network"(id) ON DELETE CASCADE,
+	name VARCHAR(255) NOT NULL,
+	key VARCHAR(255),
+	detached BOOLEAN NOT NULL DEFAULT FALSE,
+	detached_internal_msgid VARCHAR(255),
+	relay_detached INTEGER NOT NULL DEFAULT 0,
+	reattach_on INTEGER NOT NULL DEFAULT 0,
+	detach_after INTEGER NOT NULL DEFAULT 0,
+	detach_on INTEGER NOT NULL DEFAULT 0,
+	UNIQUE(network, name)
+);
+
+CREATE TABLE "DeliveryReceipt" (
+	id SERIAL PRIMARY KEY,
+	network INTEGER NOT NULL REFERENCES "Network"(id) ON DELETE CASCADE,
+	target VARCHAR(255) NOT NULL,
+	client VARCHAR(255) NOT NULL DEFAULT '',
+	internal_msgid VARCHAR(255) NOT NULL,
+	UNIQUE(network, target, client)
+);
+`
+
+func openTempPostgresDB(t *testing.T) *sql.DB {
+	source, ok := os.LookupEnv("SOJU_TEST_POSTGRES")
+	if !ok {
+		t.Skip("set SOJU_TEST_POSTGRES to a connection string to execute PostgreSQL tests")
+	}
+
+	db, err := sql.Open("postgres", source)
+	if err != nil {
+		t.Fatalf("failed to connect to PostgreSQL: %v", err)
+	}
+
+	// Store all tables in a temporary schema which will be dropped when the
+	// connection to PostgreSQL is closed.
+	db.SetMaxOpenConns(1)
+	if _, err := db.Exec("SET search_path TO pg_temp"); err != nil {
+		t.Fatalf("failed to set PostgreSQL search_path: %v", err)
+	}
+
+	return db
+}
+
+func TestPostgresMigrations(t *testing.T) {
+	sqlDB := openTempPostgresDB(t)
+	if _, err := sqlDB.Exec(postgresV0Schema); err != nil {
+		t.Fatalf("DB.Exec() failed for v0 schema: %v", err)
+	}
+
+	db := &PostgresDB{db: sqlDB}
+	defer db.Close()
+
+	if err := db.upgrade(); err != nil {
+		t.Fatalf("PostgresDB.Upgrade() failed: %v", err)
+	}
+}