add test for env.ts

Author: cleot

src/lib/env.test.ts

@@ -0,0 +1,86 @@
+import { afterEach, describe, expect, it, vi } from "vitest"
+
+const loadEnv = async () => {
+  const module = await import("./env")
+  return module.env
+}
+
+afterEach(() => {
+  vi.resetModules()
+  vi.unstubAllGlobals()
+  vi.unstubAllEnvs()
+})
+
+describe("env runtime resolution", () => {
+  it("prefers runtime env values when provided", async () => {
+    vi.stubEnv("VITE_API_BASE_URL", "https://fallback.example.com")
+    vi.stubEnv("VITE_KEYCLOAK_URL", "https://fallback-keycloak.example.com")
+    vi.stubEnv("VITE_KEYCLOAK_REALM", "fallback-realm")
+    vi.stubEnv("VITE_KEYCLOAK_CLIENT_ID", "fallback-client")
+
+    vi.stubGlobal("window", {
+      __ENV__: {
+        VITE_API_BASE_URL: "https://runtime.example.com",
+        VITE_API_MOCKING_ENABLED: "true",
+        VITE_KEYCLOAK_URL: "https://runtime-keycloak.example.com",
+        VITE_KEYCLOAK_REALM: "runtime-realm",
+        VITE_KEYCLOAK_CLIENT_ID: "runtime-client",
+        VITE_BITCR_DEV_INCLUDE_CROWDIN_IN_CONTEXT_TOOLING: "true",
+      },
+    })
+
+    const env = await loadEnv()
+
+    expect(env.apiBaseUrl).toBe("https://runtime.example.com")
+    expect(env.apiMocksEnabled).toBe(true)
+    expect(env.keycloakUrl).toBe("https://runtime-keycloak.example.com")
+    expect(env.keycloakRealm).toBe("runtime-realm")
+    expect(env.keycloakClientId).toBe("runtime-client")
+    expect(env.crowdinInContextToolingEnabled).toBe(true)
+  })
+
+  it("falls back to build-time env when runtime values are empty", async () => {
+    vi.stubEnv("VITE_API_BASE_URL", "https://fallback.example.com")
+    vi.stubEnv("VITE_API_MOCKING_ENABLED", "true")
+    vi.stubEnv("VITE_KEYCLOAK_URL", "https://fallback-keycloak.example.com")
+    vi.stubEnv("VITE_KEYCLOAK_REALM", "fallback-realm")
+    vi.stubEnv("VITE_KEYCLOAK_CLIENT_ID", "fallback-client")
+    vi.stubEnv("VITE_BITCR_DEV_INCLUDE_CROWDIN_IN_CONTEXT_TOOLING", "false")
+
+    vi.stubGlobal("window", {
+      __ENV__: {
+        VITE_API_BASE_URL: "",
+        VITE_API_MOCKING_ENABLED: "",
+        VITE_KEYCLOAK_URL: "",
+        VITE_KEYCLOAK_REALM: "",
+        VITE_KEYCLOAK_CLIENT_ID: "",
+        VITE_BITCR_DEV_INCLUDE_CROWDIN_IN_CONTEXT_TOOLING: "",
+      },
+    })
+
+    const env = await loadEnv()
+
+    expect(env.apiBaseUrl).toBe("https://fallback.example.com")
+    expect(env.apiMocksEnabled).toBe(true)
+    expect(env.keycloakUrl).toBe("https://fallback-keycloak.example.com")
+    expect(env.keycloakRealm).toBe("fallback-realm")
+    expect(env.keycloakClientId).toBe("fallback-client")
+    expect(env.crowdinInContextToolingEnabled).toBe(false)
+  })
+
+  it("handles SSR where window is undefined", async () => {
+    vi.stubEnv("VITE_API_BASE_URL", "https://fallback.example.com")
+    vi.stubEnv("VITE_KEYCLOAK_URL", "https://fallback-keycloak.example.com")
+    vi.stubEnv("VITE_KEYCLOAK_REALM", "fallback-realm")
+    vi.stubEnv("VITE_KEYCLOAK_CLIENT_ID", "fallback-client")
+
+    vi.stubGlobal("window", undefined)
+
+    const env = await loadEnv()
+
+    expect(env.apiBaseUrl).toBe("https://fallback.example.com")
+    expect(env.keycloakUrl).toBe("https://fallback-keycloak.example.com")
+    expect(env.keycloakRealm).toBe("fallback-realm")
+    expect(env.keycloakClientId).toBe("fallback-client")
+  })
+})