Enable k8s configmaps as flags for play kube

Signed-off-by: Eduardo Vega <edvegavalerio@gmail.com>

1 files changed, 254 insertions, 0 deletions

diff --git a/pkg/domain/infra/abi/play_test.go b/pkg/domain/infra/abi/play_test.go
new file mode 100644
index 000000000..5595476c3
--- /dev/null
+++ b/pkg/domain/infra/abi/play_test.go
@@ -0,0 +1,254 @@
+package abi
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+var configMapList = []v1.ConfigMap{
+	{
+		TypeMeta: metav1.TypeMeta{
+			Kind: "ConfigMap",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "bar",
+		},
+		Data: map[string]string{
+			"myvar": "bar",
+		},
+	},
+	{
+		TypeMeta: metav1.TypeMeta{
+			Kind: "ConfigMap",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "foo",
+		},
+		Data: map[string]string{
+			"myvar": "foo",
+		},
+	},
+}
+
+func TestReadConfigMapFromFile(t *testing.T) {
+	tests := []struct {
+		name             string
+		configMapContent string
+		expectError      bool
+		expectedErrorMsg string
+		expected         v1.ConfigMap
+	}{
+		{
+			"ValidConfigMap",
+			`
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: foo
+data:
+  myvar: foo
+`,
+			false,
+			"",
+			v1.ConfigMap{
+				TypeMeta: metav1.TypeMeta{
+					Kind:       "ConfigMap",
+					APIVersion: "v1",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "foo",
+				},
+				Data: map[string]string{
+					"myvar": "foo",
+				},
+			},
+		},
+		{
+			"InvalidYAML",
+			`
+Invalid YAML
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: foo
+data:
+  myvar: foo
+`,
+			true,
+			"unable to read YAML as Kube ConfigMap",
+			v1.ConfigMap{},
+		},
+		{
+			"InvalidKind",
+			`
+apiVersion: v1
+kind: InvalidKind
+metadata:
+  name: foo
+data:
+  myvar: foo
+`,
+			true,
+			"invalid YAML kind",
+			v1.ConfigMap{},
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			buf := bytes.NewBufferString(test.configMapContent)
+			cm, err := readConfigMapFromFile(buf)
+
+			if test.expectError {
+				assert.Error(t, err)
+				assert.Contains(t, err.Error(), test.expectedErrorMsg)
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, test.expected, cm)
+			}
+		})
+	}
+}
+
+func TestEnvVarsFromConfigMap(t *testing.T) {
+	tests := []struct {
+		name          string
+		envFrom       v1.EnvFromSource
+		configMapList []v1.ConfigMap
+		expected      map[string]string
+	}{
+		{
+			"ConfigMapExists",
+			v1.EnvFromSource{
+				ConfigMapRef: &v1.ConfigMapEnvSource{
+					LocalObjectReference: v1.LocalObjectReference{
+						Name: "foo",
+					},
+				},
+			},
+			configMapList,
+			map[string]string{
+				"myvar": "foo",
+			},
+		},
+		{
+			"ConfigMapDoesNotExist",
+			v1.EnvFromSource{
+				ConfigMapRef: &v1.ConfigMapEnvSource{
+					LocalObjectReference: v1.LocalObjectReference{
+						Name: "doesnotexist",
+					},
+				},
+			},
+			configMapList,
+			map[string]string{},
+		},
+		{
+			"EmptyConfigMapList",
+			v1.EnvFromSource{
+				ConfigMapRef: &v1.ConfigMapEnvSource{
+					LocalObjectReference: v1.LocalObjectReference{
+						Name: "foo",
+					},
+				},
+			},
+			[]v1.ConfigMap{},
+			map[string]string{},
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			result := envVarsFromConfigMap(test.envFrom, test.configMapList)
+			assert.Equal(t, test.expected, result)
+		})
+	}
+}
+
+func TestEnvVarValue(t *testing.T) {
+	tests := []struct {
+		name          string
+		envVar        v1.EnvVar
+		configMapList []v1.ConfigMap
+		expected      string
+	}{
+		{
+			"ConfigMapExists",
+			v1.EnvVar{
+				Name: "FOO",
+				ValueFrom: &v1.EnvVarSource{
+					ConfigMapKeyRef: &v1.ConfigMapKeySelector{
+						LocalObjectReference: v1.LocalObjectReference{
+							Name: "foo",
+						},
+						Key: "myvar",
+					},
+				},
+			},
+			configMapList,
+			"foo",
+		},
+		{
+			"ContainerKeyDoesNotExistInConfigMap",
+			v1.EnvVar{
+				Name: "FOO",
+				ValueFrom: &v1.EnvVarSource{
+					ConfigMapKeyRef: &v1.ConfigMapKeySelector{
+						LocalObjectReference: v1.LocalObjectReference{
+							Name: "foo",
+						},
+						Key: "doesnotexist",
+					},
+				},
+			},
+			configMapList,
+			"",
+		},
+		{
+			"ConfigMapDoesNotExist",
+			v1.EnvVar{
+				Name: "FOO",
+				ValueFrom: &v1.EnvVarSource{
+					ConfigMapKeyRef: &v1.ConfigMapKeySelector{
+						LocalObjectReference: v1.LocalObjectReference{
+							Name: "doesnotexist",
+						},
+						Key: "myvar",
+					},
+				},
+			},
+			configMapList,
+			"",
+		},
+		{
+			"EmptyConfigMapList",
+			v1.EnvVar{
+				Name: "FOO",
+				ValueFrom: &v1.EnvVarSource{
+					ConfigMapKeyRef: &v1.ConfigMapKeySelector{
+						LocalObjectReference: v1.LocalObjectReference{
+							Name: "foo",
+						},
+						Key: "myvar",
+					},
+				},
+			},
+			[]v1.ConfigMap{},
+			"",
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			result := envVarValue(test.envVar, test.configMapList)
+			assert.Equal(t, test.expected, result)
+		})
+	}
+}