add e2e tests

Author: lantoli

test/e2e/cli.go

@@ -0,0 +1,68 @@
+package e2e_test
+
+import (
+	"os"
+	"testing"
+
+	"github.com/mongodb-labs/atlas-cli-plugin-terraform/test/e2e"
+	"github.com/spf13/afero"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestClu2AdvParams(t *testing.T) {
+	cwd, err := os.Getwd()
+	require.NoError(t, err)
+	var (
+		prefix         = cwd + "/testdata/"
+		fileIn         = prefix + "clu2adv.in.tf"
+		fileOut        = prefix + "clu2adv.out.tf"
+		fileExpected   = prefix + "clu2adv.expected.tf"
+		fileUnexisting = prefix + "clu2adv.unexisting.tf"
+		fs             = afero.NewOsFs()
+	)
+	tests := map[string]struct {
+		expectedErrContains string
+		assertFunc          func(t *testing.T)
+		args                []string
+	}{
+		"no params": {
+			expectedErrContains: "required flag(s) \"file\", \"output\" not set",
+		},
+		"no input file": {
+			args:                []string{"--output", fileOut},
+			expectedErrContains: "required flag(s) \"file\" not set",
+		},
+		"no output file": {
+			args:                []string{"--file", fileIn},
+			expectedErrContains: "required flag(s) \"output\" not set",
+		},
+		"unexisting input file": {
+			args:                []string{"--file", fileUnexisting, "--output", fileOut},
+			expectedErrContains: "file must exist: " + fileUnexisting,
+		},
+		"existing output file without replaceOutput flag": {
+			args:                []string{"--file", fileIn, "--output", fileExpected},
+			expectedErrContains: "file must not exist: " + fileExpected,
+		},
+		"basic use": {
+			args:       []string{"--file", fileIn, "--output", fileOut},
+			assertFunc: func(t *testing.T) { e2e.CompareFiles(t, fs, fileOut, fileExpected) },
+		},
+	}
+	for name, tc := range tests {
+		t.Run(name, func(t *testing.T) {
+			resp, err := e2e.RunClu2Adv(tc.args...)
+			assert.Equal(t, tc.expectedErrContains == "", err == nil)
+			if err == nil {
+				assert.Empty(t, resp)
+				if tc.assertFunc != nil {
+					tc.assertFunc(t)
+				}
+			} else {
+				assert.Contains(t, resp, tc.expectedErrContains)
+			}
+			_ = fs.Remove(fileOut) // Ensure the output file does not exist in case it was generated in some test case
+		})
+	}
+}

test/e2e/cli_test.go

@@ -0,0 +1,31 @@
+package e2e
+
+import (
+	"os/exec"
+	"testing"
+
+	"github.com/spf13/afero"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func RunTF(args ...string) (string, error) {
+	args = append([]string{"tf"}, args...)
+	cmd := exec.Command("atlas", args...)
+	resp, err := cmd.CombinedOutput()
+	return string(resp), err
+}
+
+func RunClu2Adv(args ...string) (string, error) {
+	args = append([]string{"clu2adv"}, args...)
+	return RunTF(args...)
+}
+
+func CompareFiles(t *testing.T, fs afero.Fs, file1, file2 string) {
+	t.Helper()
+	data1, err1 := afero.ReadFile(fs, file1)
+	require.NoError(t, err1)
+	data2, err2 := afero.ReadFile(fs, file2)
+	require.NoError(t, err2)
+	assert.Equal(t, string(data1), string(data2))
+}

test/e2e/clu2adv_test.go

@@ -0,0 +1,13 @@
+package e2e_test
+
+import (
+	"testing"
+
+	"github.com/mongodb-labs/atlas-cli-plugin-terraform/test/e2e"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRunTF(t *testing.T) {
+	resp, err := e2e.RunTF()
+	require.NoError(t, err, resp)
+}

test/e2e/e2e_helper.go

@@ -0,0 +1,26 @@
+resource "mongodbatlas_advanced_cluster" "cluster" {
+  project_id   = var.project_id
+  name         = "cluster"
+  cluster_type = "REPLICASET"
+  replication_specs = [
+    {
+      region_configs = [
+        {
+          provider_name = "AWS"
+          region_name   = "US_EAST_1"
+          priority      = 7
+          electable_specs = {
+            node_count    = 3
+            instance_size = "M10"
+          }
+        }
+      ]
+    }
+  ]
+  tags = {
+    environment = "dev"
+  }
+
+  # Generated by atlas-cli-plugin-terraform.
+  # Please confirm that all references to this resource are updated.
+}

test/e2e/run_test.go

@@ -0,0 +1,19 @@
+resource "mongodbatlas_cluster" "cluster" {
+  project_id                  = var.project_id
+  name                        = "cluster"
+  cluster_type                = "REPLICASET"
+  provider_name               = "AWS"
+  provider_instance_size_name = "M10"
+  replication_specs {
+    num_shards = 1
+    regions_config {
+      region_name     = "US_EAST_1"
+      electable_nodes = 3
+      priority        = 7
+    }
+  }
+  tags {
+    key   = "environment"
+    value = "dev"
+  }
+}