Add test cases

src/__tests__/native-token.spec.ts

@@ -0,0 +1,11 @@
+import { describe, expect, it } from "vitest";
+import { getChainConfigs } from "../utils";
+
+describe.each(getChainConfigs(true).filter((c) => !!c.tokens.length))(
+  `Should configure native token`,
+  ({ name, tokens }) => {
+    it(name, () => {
+      expect(tokens.some((t) => t.type === "native")).not.toBeFalsy();
+    });
+  },
+);

src/__tests__/target-chain.spec.ts

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+import { describe, expect, it } from "vitest";
+import { getChainConfigs } from "../utils";
+
+describe.each(getChainConfigs(true).filter((c) => !!c.tokens.length))(
+  `Test cross's target network: $network`,
+  ({ network, tokens }) => {
+    describe.each(tokens)(`$symbol`, (token) => {
+      if (token.cross.length) {
+        it.each(token.cross)(`$target.network`, (cross) => {
+          expect(cross.target.network).not.toBe(network);
+        });
+      } else {
+        it("Cross is empty", () => {
+          expect(token.cross.length).toEqual(0);
+        });
+      }
+    });
+  },
+);

src/__tests__/target-token.spec.ts

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+import { describe, expect, it } from "vitest";
+import { getChainConfig, getChainConfigs } from "../utils";
+
+describe.each(getChainConfigs(true).filter((c) => !!c.tokens.length))(
+  `Should configure target token`,
+  ({ network, tokens }) => {
+    describe.each(tokens)(`Cross $symbol from ${network}`, (token) => {
+      if (token.cross.length) {
+        it.each(token.cross)(`to $target.network $target.symbol`, (cross) => {
+          expect(
+            getChainConfig(cross.target.network)?.tokens.find((t) => t.symbol === cross.target.symbol),
+          ).not.toBeUndefined();
+        });
+      } else {
+        it("Cross is empty", () => {
+          expect(token.cross.length).toEqual(0);
+        });
+      }
+    });
+  },
+);

src/__tests__/token-decimals.spec.ts

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+import { describe, expect, it } from "vitest";
+import { getChainConfigs } from "../utils";
+import { createPublicClient, http } from "viem";
+import abi from "../abi/erc20";
+
+describe.each(getChainConfigs(true).filter((c) => !!c.tokens.length && c.network !== "taiko"))(
+  `Test token's decimals: $name`,
+  ({ tokens, ...chain }) => {
+    const publicClient = createPublicClient({ chain, transport: http() });
+
+    it.each(tokens)(`$symbol`, async (token) => {
+      if (token.type === "native") {
+        expect(token.decimals).toEqual(18);
+      } else {
+        const decimals = await publicClient.readContract({ address: token.address, abi, functionName: "decimals" });
+        expect(token.decimals).toEqual(decimals);
+      }
+    });
+  },
+);