Testing Errors When Building a Terraform Provider

dm36 · October 27, 2020, 9:11pm

Hi there!

Am writing tests for a terraform provider and have read the docs for testing (https://www.terraform.io/docs/extend/best-practices/testing.html#expecting-errors-or-non-empty-plans) but I don’t understand the process for asserting on errors from the provider.

For example- in the case of the provider I’m building- if the user provides an invalid value for one of the fields that the provider supports (i.e. puts no instead of false for the immediate field)- the api that the provider calls responds with the following error: "Error: “channels[0].immediate” must be [false]. “channels[0].immediate: must be a boolean”. However, passing this error in under ExpectError- I’m unable to assert on the value of this error. I am however able to assert that a required field is missing.

My current test suite can be found here:

github.com

logdna/terraform-provider-logdna/blob/8f89c85fe571dd54e432558ad8edbe4440e9a031/logdna/resource_view_test.go#L12



import (
	"fmt"
	"regexp"
	"testing"

	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"
)

func TestView_expectServiceKeyError(t *testing.T) {
	resource.Test(t, resource.TestCase{
		Providers: testAccProviders,
		Steps: []resource.TestStep{
			{
				Config:      testViewConfigServiceKeyError(),
				ExpectError: regexp.MustCompile("The argument \"servicekey\" is required, but no definition was found."),
			},
		},
	})
}

I also tried the suggestions on this github issue here: https://github.com/hashicorp/terraform/issues/15469

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Testing Errors When Building a Terraform Provider

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