Tests for Oracle DATE type covering edge, null, range, update

tests/date_type_test.go

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+/*
+** Copyright (c) 2025 Oracle and/or its affiliates.
+**
+** The Universal Permissive License (UPL), Version 1.0
+**
+** Subject to the condition set forth below, permission is hereby granted to any
+** person obtaining a copy of this software, associated documentation and/or data
+** (collectively the "Software"), free of charge and under any and all copyright
+** rights in the Software, and any and all patent rights owned or freely
+** licensable by each licensor hereunder covering either (i) the unmodified
+** Software as contributed to or provided by such licensor, or (ii) the Larger
+** Works (as defined below), to deal in both
+**
+** (a) the Software, and
+** (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+** one is included with the Software (each a "Larger Work" to which the Software
+** is contributed by such licensors),
+**
+** without restriction, including without limitation the rights to copy, create
+** derivative works of, display, perform, and distribute the Software and make,
+** use, sell, offer for sale, import, export, have made, and have sold the
+** Software and the Larger Work(s), and to sublicense the foregoing rights on
+** either these or other terms.
+**
+** This license is subject to the following condition:
+** The above copyright notice and either this complete permission notice or at
+** a minimum a reference to the UPL must be included in all copies or
+** substantial portions of the Software.
+**
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+** SOFTWARE.
+ */
+
+package tests
+
+import (
+	"testing"
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type DateModel struct {
+	ID          uint      `gorm:"primaryKey;autoIncrement"`
+	EventName   string    `gorm:"size:100"`
+	EventDate   time.Time `gorm:"column:EVENT_DATE;type:DATE"`
+	OptionalCol *time.Time `gorm:"column:OPTIONAL_DATE"`
+}
+
+func setupDateTests(t *testing.T) {
+	t.Log("Setting up DATE test table")
+
+	// Drop the table safely
+	dropSQL := `
+	BEGIN
+		EXECUTE IMMEDIATE 'DROP TABLE "date_models" CASCADE CONSTRAINTS';
+	EXCEPTION
+		WHEN OTHERS THEN
+			IF SQLCODE != -942 THEN RAISE; END IF;
+	END;`
+	if err := DB.Exec(dropSQL).Error; err != nil {
+		t.Fatalf("Failed to drop table: %v", err)
+	}
+
+	// migrate
+	if err := DB.AutoMigrate(&DateModel{}); err != nil {
+		t.Fatalf("Failed to migrate date_models: %v", err)
+	}
+
+	t.Log("DATE test table created successfully")
+}
+
+func TestDate_InsertAndRetrieve(t *testing.T) {
+	setupDateTests(t)
+
+	now := time.Now().Truncate(time.Second)
+	record := DateModel{
+		EventName: "Launch",
+		EventDate: now,
+	}
+	if err := DB.Create(&record).Error; err != nil {
+		t.Fatalf("Insert failed: %v", err)
+	}
+
+	var out DateModel
+	err := DB.First(&out, record.ID).Error
+	if err != nil {
+		t.Fatalf("Fetch failed: %v", err)
+	}
+
+	if !out.EventDate.Equal(now) {
+		t.Errorf("Expected %v, got %v", now, out.EventDate)
+	}
+}
+
+func TestDate_NullAndOptionalColumns(t *testing.T) {
+	setupDateTests(t)
+
+	record := DateModel{
+		EventName: "NullDate",
+	}
+	if err := DB.Create(&record).Error; err != nil {
+		t.Fatalf("Insert with null date failed: %v", err)
+	}
+
+	var fetched DateModel
+	err := DB.First(&fetched, record.ID).Error
+	if err != nil {
+		t.Fatalf("Fetch failed: %v", err)
+	}
+
+	if fetched.OptionalCol != nil {
+		t.Errorf("Expected OptionalCol to be nil, got %v", fetched.OptionalCol)
+	}
+}
+
+func TestDate_UpdateAndCompare(t *testing.T) {
+	setupDateTests(t)
+
+	initial := DateModel{
+		EventName: "CompareTest",
+		EventDate: time.Date(2025, 10, 30, 10, 10, 10, 0, time.UTC),
+	}
+	if err := DB.Create(&initial).Error; err != nil {
+		t.Fatalf("Create failed: %v", err)
+	}
+
+	updateTime := initial.EventDate.Add(2 * time.Hour)
+	if err := DB.Model(&initial).Update("EVENT_DATE", updateTime).Error; err != nil {
+		t.Fatalf("Update failed: %v", err)
+	}
+
+	var fetched DateModel
+	err := DB.First(&fetched, initial.ID).Error
+	if err != nil {
+		t.Fatalf("Fetch failed: %v", err)
+	}
+
+	if !fetched.EventDate.Equal(updateTime) {
+		t.Errorf("Expected %v, got %v", updateTime, fetched.EventDate)
+	}
+}
+
+func TestDate_QueryByDateRange(t *testing.T) {
+	setupDateTests(t)
+
+	base := time.Now().Truncate(time.Second)
+	records := []DateModel{
+		{EventName: "Day1", EventDate: base.Add(-24 * time.Hour)},
+		{EventName: "Day2", EventDate: base},
+		{EventName: "Day3", EventDate: base.Add(24 * time.Hour)},
+	}
+	if err := DB.Create(&records).Error; err != nil {
+		t.Fatalf("Bulk insert failed: %v", err)
+	}
+
+	var results []DateModel
+	err := DB.Where("\"EVENT_DATE\" BETWEEN ? AND ?", base.Add(-12*time.Hour), base.Add(12*time.Hour)).Find(&results).Error
+	if err != nil {
+		t.Fatalf("Range query failed: %v", err)
+	}
+
+	if len(results) != 1 {
+		t.Errorf("Expected 1 record, got %d", len(results))
+	}
+}
+
+func TestDate_InvalidDateHandling(t *testing.T) {
+	setupDateTests(t)
+
+	// insert invalid date
+	err := DB.Exec(`INSERT INTO "DATE_MODELS" ("EVENT_NAME","EVENT_DATE") VALUES ('BadDate', TO_DATE('2025-13-40','YYYY-MM-DD'))`).Error
+	if err == nil {
+		t.Error("Expected error inserting invalid date, got nil")
+	}
+}
+
+func TestDate_TimePrecisionLoss(t *testing.T) {
+	setupDateTests(t)
+
+	withMillis := time.Now().Truncate(time.Millisecond)
+	record := DateModel{
+		EventName: "PrecisionLoss",
+		EventDate: withMillis,
+	}
+	if err := DB.Create(&record).Error; err != nil {
+		t.Fatalf("Insert failed: %v", err)
+	}
+
+	var fetched DateModel
+	_ = DB.First(&fetched, record.ID).Error
+	if !fetched.EventDate.Truncate(time.Second).Equal(withMillis.Truncate(time.Second)) {
+		t.Errorf("Expected time match up to seconds precision, got %v", fetched.EventDate)
+	}
+}
+
+func TestDate_ZeroDateHandling(t *testing.T) {
+	setupDateTests(t)
+
+	zeroTime := time.Time{}
+	record := DateModel{
+		EventName: "ZeroDate",
+		EventDate: zeroTime,
+	}
+	err := DB.Create(&record).Error
+	if err != nil && err != gorm.ErrInvalidData {
+		t.Errorf("Unexpected error inserting zero date: %v", err)
+	}
+}