added check if identical package

cli.go

@@ -72,21 +72,23 @@ func NewCliApp() *cli.App {
 				if err := os.WriteFile(outputFilename, buf.Bytes(), 0644); err != nil {
 					return fmt.Errorf("writing output file: %w", err)
 				}
-			} else {
-				mappings, err := internal.DiscoverStructMappings(mappingTypePackage)
+
+				return nil
+			}
+
+			mappings, err := internal.DiscoverStructMappings(mappingTypePackage)
+			if err != nil {
+				return fmt.Errorf("discovering struct mappings: %w", err)
+			}
+
+			for _, m := range mappings {
+				var buf bytes.Buffer
+				outputFilename, err := internal.Generate(m, goPackage, goFile, &buf)
 				if err != nil {
-					return fmt.Errorf("discovering struct mappings: %w", err)
+					return fmt.Errorf("generating code: %w", err)
 				}
-
-				for _, m := range mappings {
-					var buf bytes.Buffer
-					outputFilename, err := internal.Generate(m, goPackage, goFile, &buf)
-					if err != nil {
-						return fmt.Errorf("generating code: %w", err)
-					}
-					if err := os.WriteFile(outputFilename, buf.Bytes(), 0644); err != nil {
-						return fmt.Errorf("writing output file: %w", err)
-					}
+				if err := os.WriteFile(outputFilename, buf.Bytes(), 0644); err != nil {
+					return fmt.Errorf("writing output file: %w", err)
 				}
 			}
 

example/pgx/model/mappings.go

@@ -0,0 +1,3 @@
+package model
+
+//go:generate go run github.com/networkteam/construct/v2/cmd/construct github.com/networkteam/construct/v2/example/pgx/model

go.work.sum

@@ -1,19 +1,28 @@
 github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
+github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
 github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/creack/pty v1.1.9 h1:uDmaGzcdjhF4i/plgjmEsriH11Y0o7RKapEf/LDaM3w=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/dave/astrid v0.0.0-20170323122508-8c2895878b14 h1:YI1gOOdmMk3xodBao7fehcvoZsEeOyy/cfhlpCSPgM4=
+github.com/dave/astrid v0.0.0-20170323122508-8c2895878b14/go.mod h1:Sth2QfxfATb/nW4EsrSi2KyJmbcniZ8TgTaji17D6ms=
 github.com/dave/brenda v1.1.0 h1:Sl1LlwXnbw7xMhq3y2x11McFu43AjDcwkllxxgZ3EZw=
+github.com/dave/brenda v1.1.0/go.mod h1:4wCUr6gSlu5/1Tk7akE5X7UorwiQ8Rij0SKH3/BGMOM=
 github.com/dave/courtney v0.3.0 h1:8aR1os2ImdIQf3Zj4oro+lD/L4Srb5VwGefqZ/jzz7U=
+github.com/dave/courtney v0.3.0/go.mod h1:BAv3hA06AYfNUjfjQr+5gc6vxeBVOupLqrColj+QSD8=
 github.com/dave/gopackages v0.0.0-20170318123100-46e7023ec56e h1:l99YKCdrK4Lvb/zTupt0GMPfNbncAGf8Cv/t1sYLOg0=
+github.com/dave/gopackages v0.0.0-20170318123100-46e7023ec56e/go.mod h1:i00+b/gKdIDIxuLDFob7ustLAVqhsZRk2qVZrArELGQ=
 github.com/dave/kerr v0.0.0-20170318121727-bc25dd6abe8e h1:xURkGi4RydhyaYR6PzcyHTueQudxY4LgxN1oYEPJHa0=
+github.com/dave/kerr v0.0.0-20170318121727-bc25dd6abe8e/go.mod h1:qZqlPyPvfsDJt+3wHJ1EvSXDuVjFTK0j2p/ca+gtsb8=
 github.com/dave/patsy v0.0.0-20210517141501-957256f50cba h1:1o36L4EKbZzazMk8iGC4kXpVnZ6TPxR2mZ9qVKjNNAs=
+github.com/dave/patsy v0.0.0-20210517141501-957256f50cba/go.mod h1:qfR88CgEGLoiqDaE+xxDCi5QA5v4vUoW0UCX2Nd5Tlc=
 github.com/dave/rebecca v0.9.1 h1:jxVfdOxRirbXL28vXMvUvJ1in3djwkVKXCq339qhBL0=
+github.com/dave/rebecca v0.9.1/go.mod h1:N6XYdMD/OKw3lkF3ywh8Z6wPGuwNFDNtWYEMFWEmXBA=
 github.com/jackc/puddle/v2 v2.2.0/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
 github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lib/pq v1.10.7/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
@@ -54,3 +63,4 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

internal/generate.go

@@ -12,6 +12,8 @@ import (
 
 // Generate Go code for the struct mapping
 func Generate(m *StructMapping, goPackage string, goFile string, w io.Writer) (outputFilename string, err error) {
+	pkgName := m.MappingTypePackage[strings.LastIndex(m.MappingTypePackage, "/")+1:]
+
 	f := NewFile(goPackage)
 
 	f.PackageComment("Code generated by construct, DO NOT EDIT.")
@@ -22,7 +24,7 @@ func Generate(m *StructMapping, goPackage string, goFile string, w io.Writer) (o
 
 	// ChangeSet struct
 
-	changeSetName, err := generateChangeSetStruct(f, m)
+	changeSetName, err := generateChangeSetStruct(f, m, goPackage)
 	if err != nil {
 		return "", fmt.Errorf("generating ChangeSet struct: %w", err)
 	}
@@ -100,8 +102,12 @@ func Generate(m *StructMapping, goPackage string, goFile string, w io.Writer) (o
 
 	toChangeSetBlock = append(toChangeSetBlock, Return())
 
+	mtp := m.MappingTypePackage
+	if goPackage == pkgName {
+		mtp = ""
+	}
 	f.Func().Id(firstToUpper(m.TargetName) + "ToChangeSet").Params(
-		Id("r").Qual(m.MappingTypePackage, m.MappingTypeName),
+		Id("r").Qual(mtp, m.MappingTypeName),
 	).Params(Id("c").Id(changeSetName)).Block(
 		toChangeSetBlock...,
 	).Line()
@@ -163,7 +169,7 @@ func generateDefaultSelectJsonObject(f *File, m *StructMapping) {
 	f.Var().Id(varName).Op("=").Add(code).Line()
 }
 
-func generateChangeSetStruct(f *File, m *StructMapping) (changeSetName string, err error) {
+func generateChangeSetStruct(f *File, m *StructMapping, pkgDest string) (changeSetName string, err error) {
 	var structFields []Code
 
 	for _, fm := range m.FieldMappings {
@@ -174,8 +180,13 @@ func generateChangeSetStruct(f *File, m *StructMapping) (changeSetName string, e
 				code.Op("*").Id(v.String())
 			case *types.Named:
 				typeName := v.Obj()
+				pkgPath := typeName.Pkg().Path()
+				pkgName := pkgPath[strings.LastIndex(pkgPath, "/")+1:]
+				if pkgDest == pkgName {
+					pkgPath = ""
+				}
 				code.Op("*").Qual(
-					typeName.Pkg().Path(),
+					pkgPath,
 					typeName.Name(),
 				)
 			case *types.Pointer:
@@ -186,8 +197,13 @@ func generateChangeSetStruct(f *File, m *StructMapping) (changeSetName string, e
 					code.Op("*").Id(v.String())
 				case *types.Named:
 					typeName := v.Obj()
+					pkgPath := typeName.Pkg().Path()
+					pkgName := pkgPath[strings.LastIndex(pkgPath, "/")+1:]
+					if pkgDest == pkgName {
+						pkgPath = ""
+					}
 					code.Op("*").Qual(
-						typeName.Pkg().Path(),
+						pkgPath,
 						typeName.Name(),
 					)
 				case *types.Slice:
@@ -203,8 +219,13 @@ func generateChangeSetStruct(f *File, m *StructMapping) (changeSetName string, e
 					code.Id(v.String())
 				case *types.Named:
 					typeName := v.Obj()
+					pkgPath := typeName.Pkg().Path()
+					pkgName := pkgPath[strings.LastIndex(pkgPath, "/")+1:]
+					if pkgDest == pkgName {
+						pkgPath = ""
+					}
 					code.Qual(
-						typeName.Pkg().Path(),
+						pkgPath,
 						typeName.Name(),
 					)
 				default:

internal/generate_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/networkteam/construct/v2/internal"
 )
@@ -15,21 +16,29 @@ func TestGenerate(t *testing.T) {
 
 	var buf bytes.Buffer
 	outputFilename, err := internal.Generate(m, "repository", "mappings.go", &buf)
-	if err != nil {
-		t.Fatalf("error generating code: %v", err)
-	}
+	require.NoErrorf(t, err, "error generating code: %v")
 
 	const expectedOutputFilename = "mappings_mytype_gen.go"
-	if outputFilename != expectedOutputFilename {
-		t.Errorf("expected output filename to be %s, but got %s", expectedOutputFilename, outputFilename)
-	}
+	require.Equal(t, expectedOutputFilename, outputFilename, "expected output filename to be %s, but got %s", expectedOutputFilename, outputFilename)
 
 	fixtureOut, err := os.ReadFile("./fixtures/repository/" + expectedOutputFilename)
-	if err != nil {
-		t.Fatalf("error reading fixture file: %v", err)
-	}
+	require.NoError(t, err, "error reading fixture file: %v")
 
-	if buf.String() != string(fixtureOut) {
-		assert.Equal(t, string(fixtureOut), buf.String())
-	}
+	assert.Equal(t, string(fixtureOut), buf.String())
+}
+
+func TestGenerateSamePackage(t *testing.T) {
+	m := myTypeStructMapping()
+
+	var buf bytes.Buffer
+	outputFilename, err := internal.Generate(m, "fixtures", "fixture.go", &buf)
+	require.NoErrorf(t, err, "error generating code: %v")
+
+	const expectedOutputFilename = "fixture_mytype_gen.go"
+	require.Equal(t, expectedOutputFilename, outputFilename, "expected output filename to be %s, but got %s", expectedOutputFilename, outputFilename)
+
+	fixtureOut, err := os.ReadFile("./fixtures/" + expectedOutputFilename)
+	require.NoError(t, err, "error reading fixture file: %v")
+
+	assert.Equal(t, string(fixtureOut), buf.String())
 }