Add utils.Includes() helper function

utils/utils.go

@@ -33,12 +33,7 @@ const (
 //    > true
 //
 func DoesNotInclude(strs []string, val string) bool {
-	for _, str := range strs {
-		if val == str {
-			return false
-		}
-	}
-	return true
+	return !Includes(strs, val)
 }
 
 // ExecuteCommand executes an external command on the local machine as the current user
@@ -76,6 +71,26 @@ func FindMatch(pattern string, data string) [][]string {
 	return r.FindAllStringSubmatch(data, -1)
 }
 
+// Includes takes a slice of strings and a target string and returns
+// TRUE if the slice includes the target, FALSE if it does not
+//
+// Example:
+//
+//    x := Includes([]string{"cat", "dog", "rat"}, "dog")
+//    > true
+//
+//    x := Includes([]string{"cat", "dog", "rat"}, "pig")
+//    > false
+//
+func Includes(strs []string, val string) bool {
+	for _, str := range strs {
+		if val == str {
+			return true
+		}
+	}
+	return false
+}
+
 // OpenFile opens the file defined in `path` via the operating system
 func OpenFile(path string) {
 	if (strings.HasPrefix(path, "http://")) || (strings.HasPrefix(path, "https://")) {

utils/utils_test.go

@@ -9,8 +9,35 @@ import (
 )
 
 func Test_DoesNotInclude(t *testing.T) {
-	Equal(t, true, DoesNotInclude([]string{"cat", "dog", "rat"}, "bat"))
-	Equal(t, false, DoesNotInclude([]string{"cat", "dog", "rat"}, "dog"))
+	tests := []struct {
+		name     string
+		strs     []string
+		val      string
+		expected bool
+	}{
+		{
+			name:     "when included",
+			strs:     []string{"a", "b", "c"},
+			val:      "b",
+			expected: false,
+		},
+		{
+			name:     "when not included",
+			strs:     []string{"a", "b", "c"},
+			val:      "f",
+			expected: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := DoesNotInclude(tt.strs, tt.val)
+
+			if tt.expected != actual {
+				t.Errorf("\nexpected: %t\n     got: %t", tt.expected, actual)
+			}
+		})
+	}
 }
 
 func Test_ExecuteCommand(t *testing.T) {
@@ -50,6 +77,38 @@ func Test_FindMatch(t *testing.T) {
 	Equal(t, expected, result)
 }
 
+func Test_Includes(t *testing.T) {
+	tests := []struct {
+		name     string
+		strs     []string
+		val      string
+		expected bool
+	}{
+		{
+			name:     "when included",
+			strs:     []string{"a", "b", "c"},
+			val:      "b",
+			expected: true,
+		},
+		{
+			name:     "when not included",
+			strs:     []string{"a", "b", "c"},
+			val:      "f",
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := Includes(tt.strs, tt.val)
+
+			if tt.expected != actual {
+				t.Errorf("\nexpected: %t\n     got: %t", tt.expected, actual)
+			}
+		})
+	}
+}
+
 func Test_ReadFileBytes(t *testing.T) {
 	tests := []struct {
 		name     string