Implements /banks GET method

Issue #16

internal/api/impl.go

@@ -14,8 +14,19 @@ type ServerImpl struct {
 	Dal dal.DAL
 }
 
-func (*ServerImpl) GetBanks(ctx echo.Context) error {
-	return echo.NewHTTPError(http.StatusNotImplemented)
+func (pf *ServerImpl) GetBanks(ctx echo.Context) error {
+	log.Printf("GetBanks")
+
+	banks, err := pf.Dal.Banks()
+	if err != nil {
+		return ctx.NoContent(http.StatusInternalServerError)
+	}
+
+	if len(banks) == 0 {
+		return ctx.NoContent(http.StatusNoContent)
+	}
+
+	return ctx.JSON(http.StatusOK, convertBanks(banks))
 }
 
 func (*ServerImpl) GetBankById(ctx echo.Context, bankId int64) error {

internal/api/impl_test.go

@@ -10,6 +10,7 @@ import (
 	"git.rosemyrtle.work/personal-finance/server/internal/dal"
 	"git.rosemyrtle.work/personal-finance/server/internal/entity"
 	"git.rosemyrtle.work/personal-finance/server/internal/mock"
+	"github.com/google/uuid"
 	"github.com/labstack/echo/v4"
 	"github.com/shopspring/decimal"
 	"github.com/stretchr/testify/assert"
@@ -17,26 +18,48 @@ import (
 )
 
 func TestServerImpl_GetBanks(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	mock_dal := mock.NewMockDAL(ctrl)
+
 	type fields struct {
 		Dal dal.DAL
 	}
-	type args struct {
-		ctx echo.Context
-	}
 	tests := []struct {
 		name    string
 		fields  fields
-		args    args
 		wantErr bool
+		mocks   entity.Banks
 	}{
-		// TODO: Add test cases.
+		{
+			"200",
+			fields{mock_dal},
+			false,
+			entity.Banks{
+				{Id: "Bank A", Name: "Bank A", NordigenId: uuid.New()},
+				{Id: "Bank B", Name: "Bank B", NordigenId: uuid.New()},
+			},
+		},
+		{
+			"204",
+			fields{mock_dal},
+			false,
+			entity.Banks{},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			s := &ServerImpl{
 				Dal: tt.fields.Dal,
 			}
-			if err := s.GetBanks(tt.args.ctx); (err != nil) != tt.wantErr {
+
+			req := httptest.NewRequest(http.MethodGet, "/banks", nil)
+			rec := httptest.NewRecorder()
+			ctx := echo.New().NewContext(req, rec)
+
+			mock_dal.EXPECT().Banks().Return(tt.mocks, nil).Times(1)
+
+			if err := s.GetBanks(ctx); (err != nil) != tt.wantErr {
 				t.Errorf("ServerImpl.GetBanks() error = %v, wantErr %v", err, tt.wantErr)
 			}
 		})

internal/dal/impl.go

@@ -49,6 +49,17 @@ func (*DalImpl) Bank() (entity.Bank, error) {
 	return entity.Bank{}, errors.New("not implemented")
 }
 
-func (*DalImpl) Banks() (entity.Banks, error) {
-	return entity.Banks{}, errors.New("not implemented")
+func (dal *DalImpl) Banks() (entity.Banks, error) {
+	log.Printf("DAL::Banks")
+
+	if dal.Db == nil {
+		log.Panic("database not available")
+	}
+
+	rows, err := dal.Db.Query("SELECT b.name, b.name, n.requisition_id FROM pfbudget.banks b JOIN pfbudget.banks_nordigen n ON b.name = n.name")
+	if err != nil {
+		return entity.Banks{}, err
+	}
+
+	return convert[entity.Bank](rows), nil
 }

internal/dal/impl_test.go

@@ -9,6 +9,7 @@ import (
 
 	"git.rosemyrtle.work/personal-finance/server/internal/entity"
 	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/google/uuid"
 	"github.com/shopspring/decimal"
 )
 
@@ -167,22 +168,56 @@ func TestDalImpl_Bank(t *testing.T) {
 }
 
 func TestDalImpl_Banks(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	uuid := uuid.New()
+
 	type fields struct {
 		Db *sql.DB
 	}
+	type args struct {
+		rows [][]driver.Value
+	}
 	tests := []struct {
 		name    string
 		fields  fields
+		args    args
 		want    entity.Banks
 		wantErr bool
 	}{
-		// TODO: Add test cases.
+		{
+			"200",
+			fields{db},
+			args{[][]driver.Value{
+				{"Bank A", "Bank A", uuid.String()},
+				{"Bank B", "Bank B", uuid.String()},
+			}},
+			entity.Banks{
+				{Id: "Bank A", Name: "Bank A", NordigenId: uuid},
+				{Id: "Bank B", Name: "Bank B", NordigenId: uuid},
+			},
+			false,
+		},
+		{"404", fields{db}, args{}, nil, false},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			d := &DalImpl{
 				Db: tt.fields.Db,
 			}
+
+			mock.
+				ExpectQuery("^SELECT .* FROM .*banks b JOIN .*banks_nordigen n ON b.name = n.name$").
+				WithoutArgs().
+				WillReturnRows(
+					mock.
+						NewRows([]string{"name", "name", "requisition_id"}).
+						AddRows(tt.args.rows...),
+				)
+
 			got, err := d.Banks()
 			if (err != nil) != tt.wantErr {
 				t.Errorf("DalImpl.Banks() error = %v, wantErr %v", err, tt.wantErr)