v1.12.2/internal/command/testdata/test/missing-provider-definition-in-file/main.tftest.hcl

# provider "test" {}

# provider "test" {
#   alias = "secondary"
# }

run "passes_validation" {

// references a provider that is not defined in the test file
  providers = {
    test = test
  }

  assert {
    condition = test_resource.primary.value == "foo"
    error_message = "primary contains invalid value"
  }

  assert {
    condition = test_resource.secondary.value == "bar"
    error_message = "secondary contains invalid value"
  }
}