Upgrade solidity version in tests to 0.8.x (#843)

package.json

@@ -54,10 +54,10 @@
     "ethereum-waffle": "^3.4.0",
     "ethers": "^5.5.3",
     "ganache-cli": "6.12.2",
-    "hardhat": "^2.17.3",
+    "hardhat": "^2.19.5",
     "hardhat-gas-reporter": "^1.0.1",
     "nyc": "^14.1.1",
-    "solc": "^0.7.5"
+    "solc": "0.8.24"
   },
   "peerDependencies": {
     "hardhat": "^2.11.0"

test/sources/generic/assets/SimpleError.sol

@@ -1,5 +1,5 @@
 // This contract should throw a parse error in instrumentSolidity.js
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract SimpleError {
     uint x = 0;

test/sources/projects/contract-subfolders/contracts/A/ContractA2.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 import "./../B/ContractB2.sol";
 

test/sources/projects/contract-subfolders/contracts/B/ContractB2.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/contract-subfolders/hardhat.config.js

@@ -8,7 +8,7 @@ module.exports={
     }
   },
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   paths: {
     sources: './contracts/A'

test/sources/projects/ganache-solcoverjs/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/ganache-solcoverjs/contracts/ContractB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/ganache-solcoverjs/contracts/ContractC.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractC {

test/sources/projects/ganache-solcoverjs/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   networks: {
     coverage: {

test/sources/projects/hardhat-gas-reporter/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/hardhat-gas-reporter/hardhat.config.js

@@ -4,7 +4,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/hardhat-reset/contracts/ContractAReset.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/hardhat-reset/hardhat.config.js

@@ -10,7 +10,7 @@ if (!process.env.ALCHEMY_TOKEN){
 
 module.exports = {
   solidity: {
-    version: "0.7.0"
+    version: "0.8.17"
   },
   networks: {
     hardhat: {

test/sources/projects/import-paths/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/libraries/contracts/CLibrary.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 library CLibrary {
     uint constant x = 1;

test/sources/projects/libraries/contracts/PureView.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract PureView {
 

test/sources/projects/libraries/contracts/UsesPure.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 import "./_Interface.sol";
 import "./PureView.sol";

test/sources/projects/libraries/contracts/_Interface.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 interface _Interface {
   function stare(uint a, uint b) external;

test/sources/projects/libraries/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/matrix/contracts/MatrixA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract MatrixA {

test/sources/projects/matrix/contracts/MatrixB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract MatrixB {

test/sources/projects/matrix/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports={
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/matrix/truffle-config.js

@@ -3,7 +3,7 @@ module.exports = {
   mocha: {},
   compilers: {
     solc: {
-      version: "0.7.3"
+      version: "0.8.17"
     }
   },
   logger: process.env.SILENT ? { log: () => {} } : console,

test/sources/projects/multiple-suites/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/multiple-suites/contracts/ContractB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/multiple-suites/contracts/ContractC.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractC {

test/sources/projects/multiple-suites/hardhat.config.js

@@ -8,7 +8,7 @@ module.exports={
     }
   },
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/no-sources/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/parallel/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/skipping/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/skipping/contracts/skipped-folder/ContractB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/skipping/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/solc-8/contracts/Abstract_solc8.sol

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 pragma solidity >=0.8.0 <0.9.0;
 
 abstract contract ContractB {

test/sources/projects/solc-8/contracts/Contract_solc8.sol

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 pragma solidity >=0.8.0 <0.9.0;
 pragma abicoder v2;
 

test/sources/projects/solc-8/contracts/Library_solc8.sol

@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 pragma solidity >=0.8.0 <0.9.0;
 
 library Library_solc8 {

test/sources/projects/ternary-and-logical-or/contracts/Contract_OR.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract Contract_OR {

test/sources/projects/ternary-and-logical-or/contracts/Contract_ternary.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract Contract_ternary {

test/sources/projects/ternary-and-logical-or/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/test-files/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/test-files/contracts/ContractB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/test-files/contracts/ContractC.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractC {

test/sources/projects/test-files/contracts/otherContracts/OtherContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract OtherContractA {

test/sources/projects/test-files/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/projects/tests-folder/contracts/ContractA.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractA {

test/sources/projects/tests-folder/contracts/ContractB.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractB {

test/sources/projects/tests-folder/contracts/ContractC.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 
 contract ContractC {

test/sources/projects/tests-folder/hardhat.config.js

@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.7.3"
+    version: "0.8.17"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };

test/sources/solidity/contracts/app/Empty.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract Empty {
 }

test/sources/solidity/contracts/app/Events.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract Events {
     uint x = 0;

test/sources/solidity/contracts/app/Expensive.sol

@@ -2,7 +2,7 @@
 // Block gas limit is: 0x47e7c4
 // Should throw out of gas on unmodified truffle
 // Should pass solcover truffle
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract Expensive {
     mapping (uint => address) map;

test/sources/solidity/contracts/app/Migrations.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract Migrations {
   address public owner;

test/sources/solidity/contracts/app/Modified.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract Modified {
   uint counter;

test/sources/solidity/contracts/app/OnlyCall.sol

@@ -2,7 +2,7 @@
  * This contract contains a single function that is accessed using method.call
  * With an unpatched testrpc it should not generate any events.
  */
-pragma solidity ^0.7.0;
+pragma solidity >=0.8.0 <0.9.0;
 
 contract OnlyCall {
     function addTwo(uint val) public pure returns (uint){