Expand PHP test coverage to PHP 7.2, 7.3 and 7.4 (auth0#458)

* Fix Composer V2 compatibility
* Add 7.2, 7.3 and 7.4 PHP tests to continuous integration

Author: evansims

.circleci/config.yml

@@ -24,12 +24,12 @@ commands:
     steps:
       - run: composer test-unit-ci
       - store_artifacts:
-          path:  build/coverage.xml
+          path: build/coverage.xml
   run-integration-tests:
     steps:
       - run: composer test-integration-ci
       - store_artifacts:
-          path:  build/coverage.xml
+          path: build/coverage.xml
 
 jobs:
   php_7:
@@ -41,6 +41,33 @@ jobs:
       - run:
           command: bash <(curl -s https://codecov.io/bash)
           when: on_success
+  php_7_2:
+    docker:
+      - image: circleci/php:7.2
+    steps:
+      - prepare
+      - run-unit-tests
+      - run:
+          command: bash <(curl -s https://codecov.io/bash)
+          when: on_success
+  php_7_3:
+    docker:
+      - image: circleci/php:7.3
+    steps:
+      - prepare
+      - run-unit-tests
+      - run:
+          command: bash <(curl -s https://codecov.io/bash)
+          when: on_success
+  php_7_4:
+    docker:
+      - image: circleci/php:7.4
+    steps:
+      - prepare
+      - run-unit-tests
+      - run:
+          command: bash <(curl -s https://codecov.io/bash)
+          when: on_success
   php_7_integration_tests:
     docker:
       - image: circleci/php:7.1
@@ -66,6 +93,9 @@ workflows:
   build-and-test:
     jobs:
       - php_7
+      - php_7_2
+      - php_7_3
+      - php_7_4
       - snyk:
           # Must define SNYK_TOKEN env
           context: snyk-env
@@ -77,4 +107,4 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - master

codecov.yml

@@ -19,4 +19,4 @@ coverage:
       default:
         enabled: true
         if_no_uploads: error
-comment: false
+comment: false

composer.json

@@ -22,7 +22,7 @@
     "josegonzalez/dotenv": "^2.0",
     "squizlabs/php_codesniffer": "^3.2",
     "phpcompatibility/php-compatibility": "^8.1",
-    "dealerdirect/phpcodesniffer-composer-installer": "^0.5.0",
+    "dealerdirect/phpcodesniffer-composer-installer": "^0.7",
     "cache/array-adapter": "^1.0"
   },
   "autoload": {
@@ -47,6 +47,10 @@
     "compat": "\"vendor/bin/phpcs\" --standard=.phpcs-compat.xml.dist",
     "sniffs": "\"vendor/bin/phpcs\" -e",
     "config-phpcs": "Dealerdirect\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\Plugin::run",
-    "pre-commit": [ "@test", "@compat", "@phpcbf"  ]
+    "pre-commit": [
+      "@test",
+      "@compat",
+      "@phpcbf"
+    ]
   }
 }