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_string_test.go
+++ b/pkg/validator/validator_string_test.go
@@ -0,0 +1,303 @@
+// 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"
+
+	"go.gearno.de/x/ref"
+)
+
+func TestMinLen(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     any
+		minLen    int
+		wantError bool
+	}{
+		{"valid string", "hello", 3, false},
+		{"exact length", "hello", 5, false},
+		{"too short", "hi", 5, true},
+		{"nil pointer", (*string)(nil), 5, false}, // Skip validation
+		{"valid pointer", ref.Ref("hello"), 3, false},
+		{"non-string", 123, 5, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := MinLen(tt.minLen)(tt.value)
+			if (err != nil) != tt.wantError {
+				t.Errorf("MinLen() error = %v, wantError %v", err, tt.wantError)
+			}
+		})
+	}
+}
+
+func TestMaxLen(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     any
+		maxLen    int
+		wantError bool
+	}{
+		{"valid string", "hello", 10, false},
+		{"exact length", "hello", 5, false},
+		{"too long", "hello world", 5, true},
+		{"nil pointer", (*string)(nil), 5, false}, // Skip validation
+		{"valid pointer", ref.Ref("hi"), 5, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := MaxLen(tt.maxLen)(tt.value)
+			if (err != nil) != tt.wantError {
+				t.Errorf("MaxLen() error = %v, wantError %v", err, tt.wantError)
+			}
+		})
+	}
+}
+
+func TestPattern(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     any
+		pattern   string
+		message   string
+		wantError bool
+	}{
+		{"valid pattern", "abc123", `^[a-z0-9]+$`, "", false},
+		{"invalid pattern", "ABC123", `^[a-z0-9]+$`, "", true},
+		{"custom message", "invalid", `^valid$`, "must be 'valid'", true},
+		{"nil pointer", (*string)(nil), `^test$`, "", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := Pattern(tt.pattern, tt.message)(tt.value)
+			if (err != nil) != tt.wantError {
+				t.Errorf("Pattern() error = %v, wantError %v", err, tt.wantError)
+			}
+			if err != nil && tt.message != "" && err.Message != tt.message {
+				t.Errorf("Expected message '%s', got '%s'", tt.message, err.Message)
+			}
+		})
+	}
+}
+
+func TestAlphaNumeric(t *testing.T) {
+	t.Run("valid alphanumeric", func(t *testing.T) {
+		str := "abc123"
+		err := AlphaNumeric()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("only letters", func(t *testing.T) {
+		str := "abcDEF"
+		err := AlphaNumeric()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("only numbers", func(t *testing.T) {
+		str := "123456"
+		err := AlphaNumeric()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("contains spaces", func(t *testing.T) {
+		str := "abc 123"
+		err := AlphaNumeric()(&str)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+	})
+
+	t.Run("contains special characters", func(t *testing.T) {
+		str := "abc-123"
+		err := AlphaNumeric()(&str)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+	})
+
+	t.Run("empty string", func(t *testing.T) {
+		str := ""
+		err := AlphaNumeric()(&str)
+		if err != nil {
+			t.Errorf("expected no error for empty string, got: %v", err)
+		}
+	})
+
+	t.Run("nil pointer", func(t *testing.T) {
+		var str *string
+		err := AlphaNumeric()(str)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+}
+
+func TestNoSpaces(t *testing.T) {
+	t.Run("no spaces", func(t *testing.T) {
+		str := "hello-world"
+		err := NoSpaces()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("contains spaces", func(t *testing.T) {
+		str := "hello world"
+		err := NoSpaces()(&str)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+	})
+
+	t.Run("multiple spaces", func(t *testing.T) {
+		str := "hello  world  test"
+		err := NoSpaces()(&str)
+		if err == nil {
+			t.Error("expected validation error")
+		}
+	})
+
+	t.Run("empty string", func(t *testing.T) {
+		str := ""
+		err := NoSpaces()(&str)
+		if err != nil {
+			t.Errorf("expected no error for empty string, got: %v", err)
+		}
+	})
+
+	t.Run("nil pointer", func(t *testing.T) {
+		var str *string
+		err := NoSpaces()(str)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+}
+
+func TestSlug(t *testing.T) {
+	t.Run("valid slug", func(t *testing.T) {
+		str := "hello-world"
+		err := Slug()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("valid slug with numbers", func(t *testing.T) {
+		str := "hello-world-123"
+		err := Slug()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("single word", func(t *testing.T) {
+		str := "hello"
+		err := Slug()(&str)
+		if err != nil {
+			t.Errorf("expected no error, got: %v", err)
+		}
+	})
+
+	t.Run("contains uppercase", func(t *testing.T) {
+		str := "Hello-World"
+		err := Slug()(&str)
+		if err == nil {
+			t.Error("expected validation error for uppercase")
+		}
+	})
+
+	t.Run("contains spaces", func(t *testing.T) {
+		str := "hello world"
+		err := Slug()(&str)
+		if err == nil {
+			t.Error("expected validation error for spaces")
+		}
+	})
+
+	t.Run("contains underscores", func(t *testing.T) {
+		str := "hello_world"
+		err := Slug()(&str)
+		if err == nil {
+			t.Error("expected validation error for underscores")
+		}
+	})
+
+	t.Run("starts with hyphen", func(t *testing.T) {
+		str := "-hello"
+		err := Slug()(&str)
+		if err == nil {
+			t.Error("expected validation error for leading hyphen")
+		}
+	})
+
+	t.Run("ends with hyphen", func(t *testing.T) {
+		str := "hello-"
+		err := Slug()(&str)
+		if err == nil {
+			t.Error("expected validation error for trailing hyphen")
+		}
+	})
+
+	t.Run("empty string", func(t *testing.T) {
+		str := ""
+		err := Slug()(&str)
+		if err != nil {
+			t.Errorf("expected no error for empty string, got: %v", err)
+		}
+	})
+
+	t.Run("nil pointer", func(t *testing.T) {
+		var str *string
+		err := Slug()(str)
+		if err != nil {
+			t.Errorf("expected no error for nil, got: %v", err)
+		}
+	})
+}
+
+func TestOneOf(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     any
+		allowed   []string
+		wantError bool
+	}{
+		{"valid value", "apple", []string{"apple", "banana", "orange"}, false},
+		{"invalid value", "grape", []string{"apple", "banana", "orange"}, true},
+		{"nil pointer", (*string)(nil), []string{"apple"}, false},
+		{"empty string", "", []string{"apple", ""}, false},
+		{"non-string", 123, []string{"apple"}, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := OneOfSlice(tt.allowed)(tt.value)
+			if (err != nil) != tt.wantError {
+				t.Errorf("OneOfSlice() error = %v, wantError %v", err, tt.wantError)
+			}
+		})
+	}
+}