/
testing_new_config.go
241 lines (210 loc) · 6.53 KB
/
testing_new_config.go
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package resource
import (
"context"
"errors"
"fmt"
tfjson "github.com/hashicorp/terraform-json"
testing "github.com/mitchellh/go-testing-interface"
"github.com/hashicorp/terraform-plugin-sdk/v2/internal/logging"
"github.com/hashicorp/terraform-plugin-sdk/v2/internal/plugintest"
"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"
)
func testStepNewConfig(ctx context.Context, t testing.T, c TestCase, wd *plugintest.WorkingDir, step TestStep, providers *providerFactories) error {
t.Helper()
err := wd.SetConfig(ctx, step.mergedConfig(ctx, c))
if err != nil {
return fmt.Errorf("Error setting config: %w", err)
}
// require a refresh before applying
// failing to do this will result in data sources not being updated
err = runProviderCommand(ctx, t, func() error {
return wd.Refresh(ctx)
}, wd, providers)
if err != nil {
return fmt.Errorf("Error running pre-apply refresh: %w", err)
}
// If this step is a PlanOnly step, skip over this first Plan and
// subsequent Apply, and use the follow-up Plan that checks for
// permadiffs
if !step.PlanOnly {
logging.HelperResourceDebug(ctx, "Running Terraform CLI plan and apply")
// Plan!
err := runProviderCommand(ctx, t, func() error {
if step.Destroy {
return wd.CreateDestroyPlan(ctx)
}
return wd.CreatePlan(ctx)
}, wd, providers)
if err != nil {
return fmt.Errorf("Error running pre-apply plan: %w", err)
}
// We need to keep a copy of the state prior to destroying such
// that the destroy steps can verify their behavior in the
// check function
var stateBeforeApplication *terraform.State
err = runProviderCommand(ctx, t, func() error {
stateBeforeApplication, err = getState(ctx, t, wd)
if err != nil {
return err
}
return nil
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving pre-apply state: %w", err)
}
// Apply the diff, creating real resources
err = runProviderCommand(ctx, t, func() error {
return wd.Apply(ctx)
}, wd, providers)
if err != nil {
if step.Destroy {
return fmt.Errorf("Error running destroy: %w", err)
}
return fmt.Errorf("Error running apply: %w", err)
}
// Get the new state
var state *terraform.State
err = runProviderCommand(ctx, t, func() error {
state, err = getState(ctx, t, wd)
if err != nil {
return err
}
return nil
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving state after apply: %w", err)
}
// Run any configured checks
if step.Check != nil {
logging.HelperResourceTrace(ctx, "Using TestStep Check")
state.IsBinaryDrivenTest = true
if step.Destroy {
if err := step.Check(stateBeforeApplication); err != nil {
return fmt.Errorf("Check failed: %w", err)
}
} else {
if err := step.Check(state); err != nil {
return fmt.Errorf("Check failed: %w", err)
}
}
}
}
// Test for perpetual diffs by performing a plan, a refresh, and another plan
logging.HelperResourceDebug(ctx, "Running Terraform CLI plan to check for perpetual differences")
// do a plan
err = runProviderCommand(ctx, t, func() error {
if step.Destroy {
return wd.CreateDestroyPlan(ctx)
}
return wd.CreatePlan(ctx)
}, wd, providers)
if err != nil {
return fmt.Errorf("Error running post-apply plan: %w", err)
}
var plan *tfjson.Plan
err = runProviderCommand(ctx, t, func() error {
var err error
plan, err = wd.SavedPlan(ctx)
return err
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving post-apply plan: %w", err)
}
if !planIsEmpty(plan) && !step.ExpectNonEmptyPlan {
var stdout string
err = runProviderCommand(ctx, t, func() error {
var err error
stdout, err = wd.SavedPlanRawStdout(ctx)
return err
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving formatted plan output: %w", err)
}
return fmt.Errorf("After applying this test step, the plan was not empty.\nstdout:\n\n%s", stdout)
}
// do a refresh
if !step.Destroy || (step.Destroy && !step.PreventPostDestroyRefresh) {
err := runProviderCommand(ctx, t, func() error {
return wd.Refresh(ctx)
}, wd, providers)
if err != nil {
return fmt.Errorf("Error running post-apply refresh: %w", err)
}
}
// do another plan
err = runProviderCommand(ctx, t, func() error {
if step.Destroy {
return wd.CreateDestroyPlan(ctx)
}
return wd.CreatePlan(ctx)
}, wd, providers)
if err != nil {
return fmt.Errorf("Error running second post-apply plan: %w", err)
}
err = runProviderCommand(ctx, t, func() error {
var err error
plan, err = wd.SavedPlan(ctx)
return err
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving second post-apply plan: %w", err)
}
// check if plan is empty
if !planIsEmpty(plan) && !step.ExpectNonEmptyPlan {
var stdout string
err = runProviderCommand(ctx, t, func() error {
var err error
stdout, err = wd.SavedPlanRawStdout(ctx)
return err
}, wd, providers)
if err != nil {
return fmt.Errorf("Error retrieving formatted second plan output: %w", err)
}
return fmt.Errorf("After applying this test step and performing a `terraform refresh`, the plan was not empty.\nstdout\n\n%s", stdout)
} else if step.ExpectNonEmptyPlan && planIsEmpty(plan) {
return errors.New("Expected a non-empty plan, but got an empty plan")
}
// ID-ONLY REFRESH
// If we've never checked an id-only refresh and our state isn't
// empty, find the first resource and test it.
if c.IDRefreshName != "" {
logging.HelperResourceTrace(ctx, "Using TestCase IDRefreshName")
var state *terraform.State
err = runProviderCommand(ctx, t, func() error {
state, err = getState(ctx, t, wd)
if err != nil {
return err
}
return nil
}, wd, providers)
if err != nil {
return err
}
if state.Empty() {
return nil
}
var idRefreshCheck *terraform.ResourceState
// Find the first non-nil resource in the state
for _, m := range state.Modules {
if len(m.Resources) > 0 {
if v, ok := m.Resources[c.IDRefreshName]; ok {
idRefreshCheck = v
}
break
}
}
// If we have an instance to check for refreshes, do it
// immediately. We do it in the middle of another test
// because it shouldn't affect the overall state (refresh
// is read-only semantically) and we want to fail early if
// this fails. If refresh isn't read-only, then this will have
// caught a different bug.
if idRefreshCheck != nil {
if err := testIDRefresh(ctx, t, c, wd, step, idRefreshCheck, providers); err != nil {
return fmt.Errorf(
"[ERROR] Test: ID-only test failed: %s", err)
}
}
}
return nil
}