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@@ -2,6 +2,7 @@ const { makeInterfaceId } = require('@openzeppelin/test-helpers');
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const { expect } = require('chai');
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+const INVALID_ID = '0xffffffff';
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const INTERFACES = {
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ERC165: ['supportsInterface(bytes4)'],
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ERC721: [
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@@ -111,18 +112,30 @@ function shouldSupportInterfaces(interfaces = []) {
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this.contractUnderTest = this.mock || this.token || this.holder || this.accessControl;
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});
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- it('supportsInterface uses less than 30k gas', async function () {
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- for (const k of interfaces) {
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- const interfaceId = INTERFACE_IDS[k] ?? k;
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- expect(await this.contractUnderTest.supportsInterface.estimateGas(interfaceId)).to.be.lte(30000);
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- }
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+ describe('when the interfaceId is supported', function () {
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+ it('uses less than 30k gas', async function () {
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+ for (const k of interfaces) {
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+ const interfaceId = INTERFACE_IDS[k] ?? k;
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+ expect(await this.contractUnderTest.supportsInterface.estimateGas(interfaceId)).to.be.lte(30000);
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+ }
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+ });
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+
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+ it('returns true', async function () {
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+ for (const k of interfaces) {
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+ const interfaceId = INTERFACE_IDS[k] ?? k;
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+ expect(await this.contractUnderTest.supportsInterface(interfaceId)).to.equal(true, `does not support ${k}`);
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+ }
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+ });
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});
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- it('all interfaces are reported as supported', async function () {
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- for (const k of interfaces) {
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- const interfaceId = INTERFACE_IDS[k] ?? k;
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- expect(await this.contractUnderTest.supportsInterface(interfaceId)).to.equal(true, `does not support ${k}`);
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- }
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+ describe('when the interfaceId is not supported', function () {
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+ it('uses less thank 30k', async function () {
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+ expect(await this.contractUnderTest.supportsInterface.estimateGas(INVALID_ID)).to.be.lte(30000);
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+ });
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+
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+ it('returns false', async function () {
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+ expect(await this.contractUnderTest.supportsInterface(INVALID_ID)).to.be.equal(false, `supports ${INVALID_ID}`);
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+ });
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});
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it('all interface functions are in ABI', async function () {
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