fix: conformance test should set env variables that reflect prod (#122)

* fix: conformance test should set env variables that reflect prod

* expose 'envs' option to allow overriding runtime env

Author: garethgeorge

README.md

@@ -91,6 +91,7 @@ Frameworks to the Functions Framework contract.
 | `-builder-runtime` | string | `""` | Runtime to use in building. Required if `-buildpacks=true`. |
 | `-builder-tag` | string | `"latest"` | Builder image tag to use in building. |
 | `-start-delay` | uint | `1` | Seconds to wait before sending HTTP request to command process. |
+| `-envs` | string | `""` | A comma separated string of additional runtime environment variables. |
 
 </nobr>
 

action/action.yml

@@ -43,6 +43,9 @@ inputs:
   workingDirectory:
     description: 'The subdirectory in which the conformance tests should run'
     default: ""
+  runtimeEnvs:
+    description: 'A comma separated list of runtime environment variable overrides'
+    default: ""
 runs:
   using: 'node12'
   main: 'dist/index.js'

action/dist/index.js

@@ -31,6 +31,7 @@ async function run() {
   const cmd = core.getInput('cmd');
   const startDelay = core.getInput('startDelay');
   const workingDirectory = core.getInput('workingDirectory');
+  const runtimeEnvs = core.getInput('runtimeEnvs');
 
   let cwd = process.cwd();
 
@@ -67,6 +68,7 @@ async function run() {
     `-buildpacks=${useBuildpacks}`,
     `-cmd=${cmd}`,
     `-start-delay=${startDelay}`,
+    `-envs=${runtimeEnvs}`,
   ].filter((x) => !!x).join(' '));
 }
 

action/dist/index.js.map

@@ -52,6 +52,10 @@ func main() {
 		*declarativeSignature = *functionSignature
 	}
 
+	// Set runtime env vars that reflect https://cloud.google.com/functions/docs/configuring/env-var
+	validationRuntimeEnv := []string{"FUNCTION_SIGNATURE_TYPE=" + *functionSignature}
+	validationRuntimeEnv = append(validationRuntimeEnv, strings.Split(*envs, ",")...)
+
 	v := newValidator(validatorParams{
 		validateMapping:      *validateMapping,
 		useBuildpacks:        *useBuildpacks,
@@ -64,7 +68,7 @@ func main() {
 		declarativeSignature: *declarativeSignature,
 		tag:                  *tag,
 		validateConcurrency:  *validateConcurrencyFlag,
-		envs:                 strings.Split(*envs, ","),
+		envs:                 validationRuntimeEnv,
 	})
 
 	if err := v.runValidation(); err != nil {