Add validator lib

Signed-off-by: Bryan Frimin <bryan@getprobo.com>
2025-11-03 08:19:09 +01:00
parent 288c59a5f2
commit f9216d30b2
102 changed files with 7409 additions and 1068 deletions
--- a/pkg/validator/validator_collection_test.go
+++ b/pkg/validator/validator_collection_test.go
@@ -0,0 +1,220 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package validator
+
+import (
+	"testing"
+)
+
+func TestMinItems(t *testing.T) {
+	t.Run("valid slice", func(t *testing.T) {
+		items := []string{"a", "b", "c"}
+		err := MinItems(2)(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("exact minimum", func(t *testing.T) {
+		items := []int{1, 2}
+		err := MinItems(2)(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("too few items", func(t *testing.T) {
+		items := []string{"a"}
+		err := MinItems(2)(&items)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+		if err.Code != ErrorCodeOutOfRange {
+			t.Errorf("expected error code %s, got %s", ErrorCodeOutOfRange, err.Code)
+		}
+	})
+
+	t.Run("nil slice", func(t *testing.T) {
+		var items *[]string
+		err := MinItems(2)(items)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+
+	t.Run("non-slice value", func(t *testing.T) {
+		value := "not a slice"
+		err := MinItems(2)(&value)
+		if err == nil || err.Code != ErrorCodeInvalidFormat {
+			t.Error("expected invalid format error")
+		}
+	})
+}
+
+func TestMaxItems(t *testing.T) {
+	t.Run("valid slice", func(t *testing.T) {
+		items := []string{"a", "b"}
+		err := MaxItems(5)(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("exact maximum", func(t *testing.T) {
+		items := []int{1, 2, 3}
+		err := MaxItems(3)(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("too many items", func(t *testing.T) {
+		items := []string{"a", "b", "c", "d"}
+		err := MaxItems(2)(&items)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+		if err.Code != ErrorCodeOutOfRange {
+			t.Errorf("expected error code %s, got %s", ErrorCodeOutOfRange, err.Code)
+		}
+	})
+
+	t.Run("nil slice", func(t *testing.T) {
+		var items *[]string
+		err := MaxItems(2)(items)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+}
+
+func TestUniqueItems(t *testing.T) {
+	t.Run("unique items", func(t *testing.T) {
+		items := []string{"a", "b", "c"}
+		err := UniqueItems()(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("duplicate items", func(t *testing.T) {
+		items := []string{"a", "b", "a"}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+		if err.Code != ErrorCodeInvalidFormat {
+			t.Errorf("expected error code %s, got %s", ErrorCodeInvalidFormat, err.Code)
+		}
+	})
+
+	t.Run("unique integers", func(t *testing.T) {
+		items := []int{1, 2, 3}
+		err := UniqueItems()(&items)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("duplicate integers", func(t *testing.T) {
+		items := []int{1, 2, 1}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+	})
+
+	t.Run("nil slice", func(t *testing.T) {
+		var items *[]string
+		err := UniqueItems()(items)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+
+	t.Run("empty slice", func(t *testing.T) {
+		items := []string{}
+		err := UniqueItems()(&items)
+		if err != nil {
+			t.Errorf("expected no error for empty slice, got: %v", err)
+		}
+	})
+
+	t.Run("non-comparable type - slice of slices", func(t *testing.T) {
+		items := [][]int{{1, 2}, {3, 4}}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error for non-comparable type")
+		}
+		if err.Code != ErrorCodeInvalidFormat {
+			t.Errorf("expected error code %s, got %s", ErrorCodeInvalidFormat, err.Code)
+		}
+		if err.Message != "cannot validate uniqueness for non-comparable types" {
+			t.Errorf("unexpected error message: %s", err.Message)
+		}
+	})
+
+	t.Run("non-comparable type - slice of maps", func(t *testing.T) {
+		items := []map[string]int{{"a": 1}, {"b": 2}}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error for non-comparable type")
+		}
+		if err.Code != ErrorCodeInvalidFormat {
+			t.Errorf("expected error code %s, got %s", ErrorCodeInvalidFormat, err.Code)
+		}
+	})
+
+	t.Run("non-comparable type - struct with slice field", func(t *testing.T) {
+		type NonComparable struct {
+			Items []int
+		}
+		items := []NonComparable{{Items: []int{1, 2}}, {Items: []int{3, 4}}}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error for non-comparable type")
+		}
+		if err.Code != ErrorCodeInvalidFormat {
+			t.Errorf("expected error code %s, got %s", ErrorCodeInvalidFormat, err.Code)
+		}
+	})
+
+	t.Run("comparable struct with unique values", func(t *testing.T) {
+		type ComparableStruct struct {
+			ID   int
+			Name string
+		}
+		items := []ComparableStruct{{ID: 1, Name: "a"}, {ID: 2, Name: "b"}}
+		err := UniqueItems()(&items)
+		if err != nil {
+			t.Errorf("expected no error for comparable structs, got: %v", err)
+		}
+	})
+
+	t.Run("comparable struct with duplicate values", func(t *testing.T) {
+		type ComparableStruct struct {
+			ID   int
+			Name string
+		}
+		items := []ComparableStruct{{ID: 1, Name: "a"}, {ID: 2, Name: "b"}, {ID: 1, Name: "a"}}
+		err := UniqueItems()(&items)
+		if err == nil {
+			t.Error("expected validation error for duplicate comparable structs")
+		}
+		if err.Code != ErrorCodeInvalidFormat {
+			t.Errorf("expected error code %s, got %s", ErrorCodeInvalidFormat, err.Code)
+		}
+	})
+}