Add packs and queries from input

This commit adds the packs and queries from the actions input to the
config file used by the CodeQL CLI.

When the `+` is used, the actions input value is combined with the
config value and when it is not used, the input value overrides the
config value.

This commit also adds a bunch of integration tests for this feature.
In order to avoid adding too many new jobs, all of the tests are
run sequentially in a single job (matrixed across relevant operating
systems and OSes).

.github/check-codescanning-config/action.yml

@@ -0,0 +1,60 @@
+name: Check Code-Scanning Config
+description: |
+    Checks the code scanning configuration file generated by the
+    action to ensure it contains the expected contents
+inputs:
+  languages:
+    required: false
+    description: The languages field passed to the init action.
+
+  packs:
+    required: false
+    description: The packs field passed to the init action.
+
+  queries:
+    required: false
+    description: The queries field passed to the init action.
+
+  config-file-test:
+    required: false
+    description: |
+      The location of the config file to use. If empty,
+      then no config file is used.
+
+  expected-config-file-contents:
+    required: true
+    description: |
+      A JSON string containing the exact contents of the config file.
+
+  tools:
+    required: true
+    description: |
+      The url of codeql to use.
+
+runs:
+  using: composite
+  steps:
+    - uses: ./../action/init
+      with:
+        languages: ${{ inputs.languages }}
+        config-file: ${{ inputs.config-file-test }}
+        queries: ${{ inputs.queries }}
+        packs: ${{ inputs.packs }}
+        tools: ${{ inputs.tools }}
+        db-location: ${{ runner.temp }}/codescanning-config-cli-test
+
+    - name: Install dependencies
+      shell: bash
+      run: npm install --location=global ts-node js-yaml
+
+    - name: Check config
+      working-directory: ${{ github.action_path }}
+      shell: bash
+      run: ts-node ./index.ts "${{ runner.temp }}/user-config.yaml" '${{ inputs.expected-config-file-contents }}'
+
+    - name: Clean up
+      shell: bash
+      if: always()
+      run: |
+        rm -rf ${{ runner.temp }}/codescanning-config-cli-test
+        rm -rf ${{ runner.temp }}/user-config.yaml

.github/check-codescanning-config/index.ts

@@ -0,0 +1,39 @@
+
+import * as core from '@actions/core'
+import * as yaml from 'js-yaml'
+import * as fs from 'fs'
+import * as assert from 'assert'
+
+const actualConfig = loadActualConfig()
+
+const rawExpectedConfig = process.argv[3].trim()
+if (!rawExpectedConfig) {
+  core.info('No expected configuration provided')
+} else {
+  core.startGroup('Expected generated user config')
+  core.info(yaml.dump(JSON.parse(rawExpectedConfig)))
+  core.endGroup()
+}
+
+const expectedConfig = rawExpectedConfig ? JSON.parse(rawExpectedConfig) : undefined;
+
+assert.deepStrictEqual(
+  actualConfig,
+  expectedConfig,
+  'Expected configuration does not match actual configuration'
+);
+
+
+function loadActualConfig() {
+  if (!fs.existsSync(process.argv[2])) {
+    core.info('No configuration file found')
+    return undefined
+  } else {
+    const rawActualConfig = fs.readFileSync(process.argv[2], 'utf8')
+    core.startGroup('Actual generated user config')
+    core.info(rawActualConfig)
+    core.endGroup()
+
+    return yaml.load(rawActualConfig)
+  }
+}

.github/query-filter-test/action.yml

@@ -49,4 +49,4 @@ runs:
         queries-not-run: ${{ inputs.queries-not-run}}
     - name: Cleanup after test
       shell: bash
-      run: rm -rf "$RUNNER_TEMP/results" "$RUNNER_TEMP//query-filter-test"
+      run: rm -rf "$RUNNER_TEMP/results" "$RUNNER_TEMP/query-filter-test"