Add basic era tests

Author: foriequal0

test/src/e2e.dynval/1/dv.era.test.ts

@@ -0,0 +1,86 @@
+// Copyright 2019 Kodebox, Inc.
+// This file is part of CodeChain.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import * as chai from "chai";
+import { expect } from "chai";
+import * as chaiAsPromised from "chai-as-promised";
+import "mocha";
+
+import { validators } from "../../../tendermint.dynval/constants";
+import { PromiseExpect } from "../../helper/promise";
+import { changeParams, setTermTestTimeout, withNodes } from "../setup";
+
+chai.use(chaiAsPromised);
+
+describe("Change era", function() {
+    const promiseExpect = new PromiseExpect();
+    const { nodes, initialParams } = withNodes(this, {
+        promiseExpect,
+        overrideParams: {
+            minNumOfValidators: 3,
+            maxNumOfValidators: 5
+        },
+        validators: validators.slice(0, 3).map(signer => ({
+            signer,
+            delegation: 5_000,
+            deposit: 10_000_000
+        }))
+    });
+
+    it("should be enabled", async function() {
+        const termWaiter = setTermTestTimeout(this, {
+            terms: 3
+        });
+
+        const checkingNode = nodes[0];
+        const changeTxHash = await changeParams(checkingNode, 1, {
+            ...initialParams,
+            era: 1
+        });
+
+        await checkingNode.waitForTx(changeTxHash);
+
+        await termWaiter.waitNodeUntilTerm(checkingNode, {
+            target: 3,
+            termPeriods: 2
+        });
+    });
+
+    it("must increase monotonically", async function() {
+        const termWaiter = setTermTestTimeout(this, {
+            terms: 2
+        });
+
+        const checkingNode = nodes[0];
+        const changeTxHash = await changeParams(checkingNode, 1, {
+            ...initialParams,
+            era: 1
+        });
+
+        await checkingNode.waitForTx(changeTxHash);
+
+        await expect(
+            changeParams(checkingNode, 2, {
+                ...initialParams,
+                era: 0
+            })
+        ).eventually.rejected;
+    });
+
+    afterEach(function() {
+        promiseExpect.checkFulfilled();
+    });
+});