refactor: make config options be consistent with the cli style (#22)

* refactor: make config options be consistent with the cli style

* refactor: remove Config struct

* refactor: postpone config process to run

Signed-off-by: Timon Wong <timon86.wang@gmail.com>

* revert some changes

Signed-off-by: Timon Wong <timon86.wang@gmail.com>

* chore: improve coverage

Signed-off-by: Timon Wong <timon86.wang@gmail.com>

* chore: fix lint

Signed-off-by: Timon Wong <timon86.wang@gmail.com>

* chore: Add a codecov file

Signed-off-by: Timon Wong <timon86.wang@gmail.com>

Signed-off-by: Timon Wong <timon86.wang@gmail.com>
Co-authored-by: Timon Wong <timon86.wang@gmail.com>

.codecov.yml

@@ -0,0 +1,16 @@
+coverage:
+  range: 70..90  # green if 90+, red if 70-
+  status:
+    patch:
+      # coverage status for pull request diff
+      default:
+        threshold: 0.5%  # allow a little drop
+    project:
+      # coverage status for whole project
+      default:
+        target: auto    # use coverage of base commit as target
+        threshold: 0.5%   # allow a little drop
+
+ignore:
+  - "plugin/**"
+  - "cmd/**"

rules/rules.go → internal/rules/rules.go

@@ -16,15 +16,6 @@ var ErrInvalidRule = errors.New("invalid rule format")
 
 type RulesetList []Ruleset
 
-func (rl RulesetList) HasName(name string) bool {
-	for _, rs := range rl {
-		if rs.Name == name {
-			return true
-		}
-	}
-	return false
-}
-
 func (rl RulesetList) Names() []string {
 	keys := make([]string, len(rl))
 	visited := make(map[string]struct{})

sets/stringset.go → internal/sets/string.go

@@ -1,12 +1,15 @@
 package sets
 
-import "sort"
+import (
+	"sort"
+	"strings"
+)
 
 type Empty struct{}
 
 type StringSet map[string]Empty
 
-func NewStringSet(items ...string) StringSet {
+func NewString(items ...string) StringSet {
 	s := make(StringSet)
 	s.Insert(items...)
 	return s
@@ -35,3 +38,22 @@ func (s StringSet) List() []string {
 	sort.Strings(res)
 	return res
 }
+
+// Set implements flag.Value interface.
+func (s *StringSet) Set(v string) error {
+	v = strings.TrimSpace(v)
+	if v == "" {
+		*s = nil
+		return nil
+	}
+
+	parts := strings.Split(v, ",")
+	set := NewString(parts...)
+	*s = set
+	return nil
+}
+
+// String implements flag.Value interface
+func (s StringSet) String() string {
+	return strings.Join(s.List(), ",")
+}

internal/sets/string_test.go

@@ -0,0 +1,61 @@
+package sets
+
+import (
+	"flag"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestString(t *testing.T) {
+	t.Parallel()
+
+	set := NewString("logr", "logr", "klog")
+	assert.Equal(t, []string{"klog", "logr"}, set.List())
+	assert.Equal(t, "klog,logr", set.String())
+	assert.True(t, set.Has("logr"))
+	assert.True(t, set.Has("klog"))
+	assert.False(t, set.Has("zap"))
+}
+
+func TestString_Flag(t *testing.T) {
+	testCases := []struct {
+		name      string
+		flagValue string
+		want      []string
+	}{
+		{
+			name:      "empty",
+			flagValue: "",
+			want:      nil,
+		},
+		{
+			name:      "klog",
+			flagValue: "klog",
+			want:      []string{"klog"},
+		},
+		{
+			name:      "klog-and-logr",
+			flagValue: "logr,klog",
+			want:      []string{"klog", "logr"},
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			f := StringSet{}
+			fs := flag.NewFlagSet("test", flag.ContinueOnError)
+			fs.SetOutput(io.Discard)
+			fs.Var(&f, "set", "")
+
+			err := fs.Parse([]string{"-set=" + tc.flagValue})
+			require.NoError(t, err)
+			assert.Equal(t, tc.want, f.List())
+		})
+	}
+}