add basic test framework for cmd line tests

Makefile

@@ -84,9 +84,14 @@ endif
 endif
 endif
 
+# Run cmd line tests
+.PHONY: test-cmd
+test-cmd:
+	go test -v github.com/kedgeproject/kedge/tests/cmd
+
 # Run all tests
 .PHONY: test
-test: test-dep validate test-unit test-unit-cover
+test: test-dep validate test-unit test-unit-cover test-cmd
 
 # Tests that are run on travs-ci
 .PHONY: travis-tests

glide.yaml

@@ -33,7 +33,9 @@ import:
   version: 8d1157a435470616f975ff9bb013bea8d0962067
   subpackages:
   - unix
-
+
+- package: github.com/kylelemons/godebug/diff
+  version: d65d576e9348f5982d7f6d83682b694e731a45c6
 
 # Those are packages that OpenShift patches in its vendor directory.
 # Those patched libs are not published elsewhere.

tests/cmd/cmd_test.go

@@ -0,0 +1,96 @@
+package cmd
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"strings"
+	"testing"
+
+	"github.com/kylelemons/godebug/diff"
+)
+
+var Fixtures = os.ExpandEnv("$GOPATH/src/github.com/kedgeproject/kedge/tests/cmd/fixtures/")
+var ProjectPath = "$GOPATH/src/github.com/kedgeproject/kedge/"
+var BinaryLocation = os.ExpandEnv(ProjectPath + "kedge")
+
+func TestKedgeGenerate(t *testing.T) {
+	testCases := []struct {
+		name        string
+		command     []string
+		input       string
+		wantSuccess bool
+		error       string
+	}{
+		{
+			name:        "multiple configmaps given and name not specified",
+			command:     []string{"generate", "-f=" + Fixtures + "multi-configmapname/app.yaml"},
+			wantSuccess: false,
+			error:       "unable to perform controller operations: unable to fix data: unable to fix ControllerFields: unable to fix configMaps: please specify name for app.configMaps[1]",
+		},
+		{
+			name:        "generating deploymentconfig",
+			command:     []string{"generate", "-f=" + Fixtures + "controllers/input"},
+			input:       Fixtures + "controllers/os.yaml",
+			wantSuccess: true,
+		},
+		{
+			name:        "multiple containers given and name not specified for 2nd contaniner",
+			command:     []string{"generate", "-f=" + Fixtures + "multi-containername/nginx.yaml"},
+			wantSuccess: false,
+			error:       "unable to perform controller operations: unable to fix data: unable to fix ControllerFields: unable to fix containers: please specify name for app.containers[1]",
+		},
+		{
+			name:    "multiple volume claims with same name",
+			command: []string{"generate", "-f=" + Fixtures + "multi-pvc-same-name/app.yaml"},
+			error:   `unable to perform controller operations: unable to validate data: unable to validate controller fields: error validating volume claims: duplicate entry of volume claim "foo"`,
+		},
+	}
+
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			stdout, err := runCmd(t, tt.command)
+			if err != nil && !tt.wantSuccess {
+
+				if stdout != tt.error {
+					t.Fatalf("wanted error: %q\nbut got error: %q %v", tt.error, stdout, err)
+				} else {
+					t.Logf("failed with error: %q", stdout)
+					return
+				}
+			} else if err != nil && tt.wantSuccess {
+				t.Fatalf("wanted success, but test failed with error: %s %v", stdout, err)
+			} else if err == nil && !tt.wantSuccess {
+				t.Fatalf("expected to fail but passed")
+			}
+
+			// Read the data from the input file
+			data, err := ioutil.ReadFile(tt.input)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			if diff := diff.Diff(string(data), fmt.Sprintf("%s\n", stdout)); diff != "" {
+				t.Fatalf("wanted: \n%s\n======================\ngot: \n%s"+
+					"\n======================\ndiff: %s", string(data), stdout, diff)
+			}
+
+		})
+	}
+}
+
+func runCmd(t *testing.T, args []string) (string, error) {
+	cmd := exec.Command("kedge", args...)
+
+	var stdout bytes.Buffer
+	cmd.Stdout = &stdout
+
+	t.Logf("Running: %s", strings.Join(cmd.Args, " "))
+	err := cmd.Run()
+	if err != nil {
+		return strings.TrimSpace(stdout.String()), err
+	}
+	return strings.TrimSpace(stdout.String()), nil
+}

tests/cmd/fixtures/controllers/os.yaml

@@ -0,0 +1,193 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab-data
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+status: {}
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab-etc
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+status: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab
+spec:
+  ports:
+  - name: ssh
+    port: 22
+    targetPort: 22
+  - name: http
+    port: 80
+    targetPort: 80
+  - name: https
+    port: 443
+    targetPort: 443
+  selector:
+    app: gitlab
+  type: LoadBalancer
+status:
+  loadBalancer: {}
+---
+apiVersion: v1
+data:
+  db-password: Z2l0bGFi
+  db-user: Z2l0bGFi
+  redis-password: Z2l0bGFi
+kind: Secret
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab
+---
+apiVersion: v1
+data:
+  gitlab_omnibus_config: |
+    external_url ENV['EXTERNAL_URL'];
+    root_pass = ENV['GITLAB_ROOT_PASSWORD'];
+    gitlab_rails['initial_root_password'] = root_pass unless root_pass.to_s == '';
+    postgresql['enable'] = false;
+    gitlab_rails['db_host'] = ENV['DB_HOST'];
+    gitlab_rails['db_password'] = ENV['DB_PASSWORD'];
+    gitlab_rails['db_username'] = ENV['DB_USER'];
+    gitlab_rails['db_database'] = ENV['DB_DATABASE'];
+    redis['enable'] = false;
+    gitlab_rails['redis_host'] = ENV['REDIS_HOST'];
+    gitlab_rails['redis_password'] = ENV['REDIS_PASSWORD'];
+    unicorn['worker_processes'] = 2;
+    manage_accounts['enable'] = true;
+    manage_storage_directories['manage_etc'] = false;
+    gitlab_shell['auth_file'] = '/gitlab-data/ssh/authorized_keys';
+    git_data_dir '/gitlab-data/git-data';
+    gitlab_rails['shared_path'] = '/gitlab-data/shared';
+    gitlab_rails['uploads_directory'] = '/gitlab-data/uploads';
+    gitlab_ci['builds_directory'] = '/gitlab-data/builds';
+kind: ConfigMap
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab
+---
+apiVersion: apps.openshift.io/v1
+kind: DeploymentConfig
+metadata:
+  creationTimestamp: null
+  labels:
+    app: gitlab
+  name: gitlab
+spec:
+  replicas: 4
+  strategy:
+    resources: {}
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        app: gitlab
+      name: gitlab
+    spec:
+      containers:
+      - env:
+        - name: GITLAB_OMNIBUS_CONFIG
+          valueFrom:
+            configMapKeyRef:
+              key: gitlab_omnibus_config
+              name: gitlab
+        - name: GITLAB_ROOT_PASSWORD
+        - name: EXTERNAL_URL
+          value: http://your-domain.com/
+        - name: DB_HOST
+          value: postgresql
+        - name: DB_USER
+          valueFrom:
+            secretKeyRef:
+              key: db-user
+              name: gitlab
+        - name: DB_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              key: db-password
+              name: gitlab
+        - name: DB_DATABASE
+          value: gitlab
+        - name: REDIS_HOST
+          value: redis
+        - name: REDIS_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              key: redis-password
+              name: gitlab
+        image: gitlab/gitlab-ce:9.4.1-ce.0
+        livenessProbe:
+          failureThreshold: 10
+          httpGet:
+            path: /help
+            port: 80
+          initialDelaySeconds: 200
+          periodSeconds: 10
+          successThreshold: 1
+          timeoutSeconds: 1
+        name: gitlab
+        readinessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /help
+            port: 80
+          initialDelaySeconds: 30
+          periodSeconds: 10
+          successThreshold: 1
+          timeoutSeconds: 1
+        resources:
+          limits:
+            cpu: "1"
+            memory: 2Gi
+          requests:
+            cpu: 500m
+            memory: 1Gi
+        volumeMounts:
+        - mountPath: /etc/gitlab
+          name: gitlab-etc
+        - mountPath: /gitlab-data
+          name: gitlab-data
+      volumes:
+      - name: gitlab-etc
+        persistentVolumeClaim:
+          claimName: gitlab-etc
+      - name: gitlab-data
+        persistentVolumeClaim:
+          claimName: gitlab-data
+  test: false
+  triggers: null
+status:
+  availableReplicas: 0
+  latestVersion: 0
+  observedGeneration: 0
+  replicas: 0
+  unavailableReplicas: 0
+  updatedReplicas: 0

tests/cmd/multi-configmapname/app.yaml → tests/cmd/fixtures/multi-configmapname/app.yaml

@@ -1,7 +1,7 @@
 name: nginx
 containers:
 - image: nginx
-configData:
+configMaps:
 - data:
     foo: bar
   name: foo