test: preserve active organization fixture session

scripts/bootstrap-api-test-fixtures.mjs

@@ -53,7 +53,7 @@ markVerifiedAndAdmin({
   adminId: databaseAdmin.id,
 });
 
-const userSession = await signIn({ email: userEmail, password });
+let userSession = await signIn({ email: userEmail, password });
 state.API_TEST_SESSION_COOKIE = userSession.cookie;
 state.API_TOKEN = userSession.token ?? "";
 state.API_TEST_USER_ID = userSession.user.id;
@@ -69,6 +69,14 @@ const organization = await ensureOrganization({
   slug: organizationSlug,
 });
 if (organization?.id) {
+  userSession = {
+    ...userSession,
+    cookie: await setActiveOrganization({
+      cookie: userSession.cookie,
+      organizationId: organization.id,
+    }),
+  };
+  state.API_TEST_SESSION_COOKIE = userSession.cookie;
   state.API_TEST_ORGANIZATION_ID = organization.id;
 }
 
@@ -212,6 +220,22 @@ async function ensureOrganization({ cookie, name, slug }) {
   return null;
 }
 
+async function setActiveOrganization({ cookie, organizationId }) {
+  const response = await request("/organization/set-active", {
+    method: "POST",
+    cookie,
+    body: { organizationId },
+  });
+
+  if (response.status !== 200) {
+    throw new Error(
+      `Failed to set active organization ${organizationId}: ${response.status} ${JSON.stringify(response.body)}`,
+    );
+  }
+
+  return sessionCookieFromSetCookie(response.setCookie) || cookie;
+}
+
 async function createApiKey({ cookie, runId }) {
   if (existingEnv.API_TEST_API_KEY && existingEnv.API_TEST_API_KEY_ID) {
     return { id: existingEnv.API_TEST_API_KEY_ID, key: existingEnv.API_TEST_API_KEY };
@@ -261,10 +285,14 @@ function splitSetCookie(value) {
 }
 
 function sessionCookieFromSetCookie(setCookieHeaders) {
-  return setCookieHeaders
+  const cookies = new Map();
+  for (const entry of setCookieHeaders
     .map((entry) => entry.split(";")[0])
-    .filter((entry) => /better-auth\.session|session_token|session/.test(entry))
-    .join("; ");
+    .filter((entry) => /better-auth\.session|session_token|session/.test(entry))) {
+    const index = entry.indexOf("=");
+    if (index !== -1) cookies.set(entry.slice(0, index), entry);
+  }
+  return [...cookies.values()].join("; ");
 }
 
 function markVerifiedAndAdmin({ userId, adminId }) {