test: add coverage for fetchTokenList('default') bundled token path

src/hooks/useTokenLists.test.ts

@@ -4,7 +4,7 @@ import type { ReactNode } from 'react'
 import { createElement } from 'react'
 import { zeroAddress } from 'viem'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
-import type { Token } from '@/src/types/token'
+import { type Token, tokenSchema } from '@/src/types/token'
 import tokenListsCache, { updateTokenListsCache } from '@/src/utils/tokenListsCache'
 
 vi.mock('@/src/utils/tokenListsCache', () => {
@@ -155,6 +155,29 @@ describe('fetchTokenList', () => {
     expect(result.tokens).toEqual([])
     warnSpy.mockRestore()
   })
+
+  describe("'default' bundled token list", () => {
+    it('returns a non-empty tokens array', async () => {
+      const result = await fetchTokenList('default')
+
+      expect(result.tokens.length).toBeGreaterThan(0)
+      expect(mockFetch).not.toHaveBeenCalled()
+    })
+
+    it('every EVM token conforms to tokenSchema', async () => {
+      const result = await fetchTokenList('default')
+
+      // The bundled list includes non-EVM tokens (e.g. Solana with base58 addresses)
+      // alongside EVM tokens. Non-EVM entries are filtered out downstream by useTokenLists
+      // via safeParse. Here we validate only the EVM-addressable subset.
+      const evmTokens = result.tokens.filter(({ address }) => /^0x[a-fA-F0-9]{40}$/.test(address))
+      expect(evmTokens.length).toBeGreaterThan(0)
+      for (const token of evmTokens) {
+        expect(() => tokenSchema.parse(token)).not.toThrow()
+      }
+      expect(mockFetch).not.toHaveBeenCalled()
+    })
+  })
 })
 
 describe('useTokenLists', () => {

src/hooks/useTokenLists.ts

@@ -98,7 +98,10 @@ function combineTokenLists(results: Array<UseSuspenseQueryResult<TokenList>>): T
     new Map(
       results
         .flatMap((result) => result.data.tokens)
-        // ensure that only valid tokens are consumed in runtime
+        // tokenSchema enforces EVM address format (0x + 40 hex chars), so non-EVM entries
+        // (e.g. Solana tokens from @uniswap/default-token-list v18+) are silently dropped here.
+        // Supporting non-EVM chains would require changes to the address schema, chain config,
+        // wallet integration, and contract lookup -- out of scope for this EVM-focused starter kit.
         .filter((token) => {
           const result = tokenSchema.safeParse(token)