package e2etest import ( "path/filepath" "reflect" "sort" "strings" "testing" "github.com/davecgh/go-spew/spew" "github.com/hashicorp/terraform/e2e" ) // The tests in this file run through different scenarios recommended in our // "Running Terraform in Automation" guide: // https://www.terraform.io/guides/running-terraform-in-automation.html // TestPlanApplyInAutomation runs through the "main case" of init, plan, apply // using the specific command line options suggested in the guide. func TestPlanApplyInAutomation(t *testing.T) { t.Parallel() // This test reaches out to releases.hashicorp.com to download the // template and null providers, so it can only run if network access is // allowed. skipIfCannotAccessNetwork(t) fixturePath := filepath.Join("test-fixtures", "full-workflow-null") tf := e2e.NewBinary(terraformBin, fixturePath) defer tf.Close() // We advertise that _any_ non-empty value works, so we'll test something // unconventional here. tf.AddEnv("TF_IN_AUTOMATION=yes-please") //// INIT stdout, stderr, err := tf.Run("init", "-input=false") if err != nil { t.Fatalf("unexpected init error: %s\nstderr:\n%s", err, stderr) } // Make sure we actually downloaded the plugins, rather than picking up // copies that might be already installed globally on the system. if !strings.Contains(stdout, "- Downloading plugin for provider \"template\"") { t.Errorf("template provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } if !strings.Contains(stdout, "- Downloading plugin for provider \"null\"") { t.Errorf("null provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } //// PLAN stdout, stderr, err = tf.Run("plan", "-out=tfplan", "-input=false") if err != nil { t.Fatalf("unexpected plan error: %s\nstderr:\n%s", err, stderr) } if !strings.Contains(stdout, "1 to add, 0 to change, 0 to destroy") { t.Errorf("incorrect plan tally; want 1 to add:\n%s", stdout) } // Because we're running with TF_IN_AUTOMATION set, we should not see // any mention of the plan file in the output. if strings.Contains(stdout, "tfplan") { t.Errorf("unwanted mention of \"tfplan\" file in plan output\n%s", stdout) } plan, err := tf.Plan("tfplan") if err != nil { t.Fatalf("failed to read plan file: %s", err) } stateResources := plan.State.RootModule().Resources diffResources := plan.Diff.RootModule().Resources if len(stateResources) != 1 || stateResources["data.template_file.test"] == nil { t.Errorf("incorrect state in plan; want just data.template_file.test to have been rendered, but have:\n%s", spew.Sdump(stateResources)) } if len(diffResources) != 1 || diffResources["null_resource.test"] == nil { t.Errorf("incorrect diff in plan; want just null_resource.test to have been rendered, but have:\n%s", spew.Sdump(diffResources)) } //// APPLY stdout, stderr, err = tf.Run("apply", "-input=false", "tfplan") if err != nil { t.Fatalf("unexpected apply error: %s\nstderr:\n%s", err, stderr) } if !strings.Contains(stdout, "Resources: 1 added, 0 changed, 0 destroyed") { t.Errorf("incorrect apply tally; want 1 added:\n%s", stdout) } state, err := tf.LocalState() if err != nil { t.Fatalf("failed to read state file: %s", err) } stateResources = state.RootModule().Resources var gotResources []string for n := range stateResources { gotResources = append(gotResources, n) } sort.Strings(gotResources) wantResources := []string{ "data.template_file.test", "null_resource.test", } if !reflect.DeepEqual(gotResources, wantResources) { t.Errorf("wrong resources in state\ngot: %#v\nwant: %#v", gotResources, wantResources) } } // TestAutoApplyInAutomation tests the scenario where the caller skips creating // an explicit plan and instead forces automatic application of changes. func TestAutoApplyInAutomation(t *testing.T) { t.Parallel() // This test reaches out to releases.hashicorp.com to download the // template and null providers, so it can only run if network access is // allowed. skipIfCannotAccessNetwork(t) fixturePath := filepath.Join("test-fixtures", "full-workflow-null") tf := e2e.NewBinary(terraformBin, fixturePath) defer tf.Close() // We advertise that _any_ non-empty value works, so we'll test something // unconventional here. tf.AddEnv("TF_IN_AUTOMATION=very-much-so") //// INIT stdout, stderr, err := tf.Run("init", "-input=false") if err != nil { t.Fatalf("unexpected init error: %s\nstderr:\n%s", err, stderr) } // Make sure we actually downloaded the plugins, rather than picking up // copies that might be already installed globally on the system. if !strings.Contains(stdout, "- Downloading plugin for provider \"template\"") { t.Errorf("template provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } if !strings.Contains(stdout, "- Downloading plugin for provider \"null\"") { t.Errorf("null provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } //// APPLY stdout, stderr, err = tf.Run("apply", "-input=false", "-auto-approve") if err != nil { t.Fatalf("unexpected apply error: %s\nstderr:\n%s", err, stderr) } if !strings.Contains(stdout, "Resources: 1 added, 0 changed, 0 destroyed") { t.Errorf("incorrect apply tally; want 1 added:\n%s", stdout) } state, err := tf.LocalState() if err != nil { t.Fatalf("failed to read state file: %s", err) } stateResources := state.RootModule().Resources var gotResources []string for n := range stateResources { gotResources = append(gotResources, n) } sort.Strings(gotResources) wantResources := []string{ "data.template_file.test", "null_resource.test", } if !reflect.DeepEqual(gotResources, wantResources) { t.Errorf("wrong resources in state\ngot: %#v\nwant: %#v", gotResources, wantResources) } } // TestPlanOnlyInAutomation tests the scenario of creating a "throwaway" plan, // which we recommend as a way to verify a pull request. func TestPlanOnlyInAutomation(t *testing.T) { t.Parallel() // This test reaches out to releases.hashicorp.com to download the // template and null providers, so it can only run if network access is // allowed. skipIfCannotAccessNetwork(t) fixturePath := filepath.Join("test-fixtures", "full-workflow-null") tf := e2e.NewBinary(terraformBin, fixturePath) defer tf.Close() // We advertise that _any_ non-empty value works, so we'll test something // unconventional here. tf.AddEnv("TF_IN_AUTOMATION=verily") //// INIT stdout, stderr, err := tf.Run("init", "-input=false") if err != nil { t.Fatalf("unexpected init error: %s\nstderr:\n%s", err, stderr) } // Make sure we actually downloaded the plugins, rather than picking up // copies that might be already installed globally on the system. if !strings.Contains(stdout, "- Downloading plugin for provider \"template\"") { t.Errorf("template provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } if !strings.Contains(stdout, "- Downloading plugin for provider \"null\"") { t.Errorf("null provider download message is missing from init output:\n%s", stdout) t.Logf("(this can happen if you have a copy of the plugin in one of the global plugin search dirs)") } //// PLAN stdout, stderr, err = tf.Run("plan", "-input=false") if err != nil { t.Fatalf("unexpected plan error: %s\nstderr:\n%s", err, stderr) } if !strings.Contains(stdout, "1 to add, 0 to change, 0 to destroy") { t.Errorf("incorrect plan tally; want 1 to add:\n%s", stdout) } // Because we're running with TF_IN_AUTOMATION set, we should not see // any mention of the the "terraform apply" command in the output. if strings.Contains(stdout, "terraform apply") { t.Errorf("unwanted mention of \"terraform apply\" in plan output\n%s", stdout) } if tf.FileExists("tfplan") { t.Error("plan file was created, but was not expected") } }