feat: add remove configmap command

(cherry picked from commit 0d7c56dcf8)

fix: add logging when configmap not exists

(cherry picked from commit 0235f10b09)

fix: correct lint issues

(cherry picked from commit 8ca1f3813b)

fix: Resolve conversation

(cherry picked from commit 927804dfe5)

kustomize/commands/edit/remove/removeconfigmap_test.go

@@ -0,0 +1,84 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package remove //nolint:testpackage
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	testutils_test "sigs.k8s.io/kustomize/kustomize/v4/commands/internal/testutils"
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+func TestRemoveConfigMap(t *testing.T) {
+	const configMapName01 = "example-configmap-01"
+	const configMapName02 = "example-configmap-02"
+
+	tests := map[string]struct {
+		input       string
+		args        []string
+		expectedErr string
+	}{
+		"happy path": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+`, configMapName01),
+			args: []string{configMapName01},
+		},
+		"multiple": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+- name: %s
+  files:
+  - application.properties
+`, configMapName01, configMapName02),
+			args: []string{
+				fmt.Sprintf("%s,%s", configMapName01, configMapName02),
+			},
+		},
+		"miss": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+`, configMapName01),
+			args: []string{"foo"},
+		},
+	}
+
+	for name, tc := range tests {
+		t.Run(name, func(t *testing.T) {
+			fSys := filesys.MakeFsInMemory()
+			testutils_test.WriteTestKustomizationWith(fSys, []byte(tc.input))
+			cmd := newCmdRemoveConfigMap(fSys)
+			err := cmd.RunE(cmd, tc.args)
+			if tc.expectedErr != "" {
+				assert.Error(t, err)
+				assert.Contains(t, err.Error(), tc.expectedErr)
+			} else {
+				assert.NoError(t, err)
+				content, err := testutils_test.ReadTestKustomization(fSys)
+				assert.NoError(t, err)
+				for _, opt := range strings.Split(tc.args[0], ",") {
+					assert.NotContains(t, string(content), opt)
+				}
+			}
+		})
+	}
+}