feat: null_safety test

tests/models/testdata.go

@@ -0,0 +1,26 @@
+package models
+
+type Order struct {
+	Id            uint `gorm:"primaryKey"`
+	Status        string
+	ProductTypeId uint
+	ProductType   ProductType
+	ProductAmount uint
+	Description   string
+	CustomerId    uint `gorm:"null;foreignKey:CustomerId;"` // want "Null safety error in \"Order\" model, field \"CustomerId\": column nullable policy doesn't match to tag nullable policy"
+	Customer      Customer
+	CreatedAt     int64 `gorm:"autoCreateTime"`
+	DeadlineDate  int64
+}
+
+type ProductType struct {
+	Id   uint `gorm:"primaryKey"`
+	Name string
+}
+
+type Customer struct {
+	Id      uint `gorm:"primaryKey"`
+	Title   string
+	Contact string
+	Orders  []Order `gorm:"foreignKey:CustomerId"`
+}

tests/null_safety_test.go

@@ -0,0 +1,12 @@
+package tests
+
+import (
+	"golang.org/x/tools/go/analysis/analysistest"
+	"gormlint/nullSafetyCheck"
+	"testing"
+)
+
+func TestNullSafety(t *testing.T) {
+	t.Parallel()
+	analysistest.Run(t, analysistest.TestData(), nullSafetyCheck.NullSafetyAnalyzer, "null_safety")
+}

tests/testdata/src/null_safety/negative.go

@@ -0,0 +1,29 @@
+package null_safety
+
+type Order1 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// not nullable - not nullable
+	CustomerId uint `gorm:"not null;foreignKey:CustomerId;"`
+}
+
+type Order2 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// nullable - nullable
+	CustomerId *uint `gorm:"null;foreignKey:CustomerId;"`
+}
+
+type Order3 struct {
+	Id uint `gorm:"primaryKey"`
+	// nullable - unspecified
+	Status      *string
+	Description string
+}
+
+type Order4 struct {
+	Id uint `gorm:"primaryKey"`
+	// not nullable - unspecified
+	Status      *string
+	Description string
+}

tests/testdata/src/null_safety/positive.go

@@ -0,0 +1,29 @@
+package null_safety
+
+type Order5 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// not nullable - nullable
+	CustomerId uint `gorm:"null;foreignKey:CustomerId;"` // want "Null safety error in \"Order5\" model, field \"CustomerId\": column nullable policy doesn't match to tag nullable policy"
+}
+
+type Order6 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// nullable - not nullable
+	CustomerId *uint `gorm:"not null;foreignKey:CustomerId;"` // want "Null safety error in \"Order6\" model, field \"CustomerId\": column nullable policy doesn't match to tag nullable policy"
+}
+
+type Order7 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// not nullable - not nullable, nullable
+	CustomerId uint `gorm:"not null;foreignKey:CustomerId;null;"` // want "Null safety error: tags \"null\" and \"not null\" are specified at one field"
+}
+
+type Order8 struct {
+	Id          uint `gorm:"primaryKey"`
+	Description string
+	// nullable - not nullable, nullable
+	CustomerId *uint `gorm:"not null;foreignKey:CustomerId;null;"` // want "Null safety error: tags \"null\" and \"not null\" are specified at one field"
+}