Adds insert plan function

store/postgres.go

@@ -1,7 +1,6 @@
 package store
 
 import (
-	"fmt"
 	"gitea.deepak.science/deepak/gogmagog/models"
 	"gitea.deepak.science/deepak/gogmagog/util"
 	"github.com/jmoiron/sqlx"
@@ -55,5 +54,17 @@ func (store *postgresStore) SelectPlanByID(id int) (*models.Plan, error) {
 }
 
 func (store *postgresStore) InsertPlan(plan *models.Plan) (int, error) {
-	return 0, fmt.Errorf("Unimplemented method")
+	queryString := store.db.Rebind("INSERT INTO plans (plan_date) VALUES (?) RETURNING plan_id")
+	tx := store.db.MustBegin()
+	var id int
+	err := tx.Get(&id, queryString, plan.PlanDate)
+	if err != nil {
+		tx.Rollback()
+		return -1, err
+	}
+	err = tx.Commit()
+	if err != nil {
+		return -1, err
+	}
+	return id, nil
 }

store/postgres_test.go

@@ -68,6 +68,35 @@ func TestSelectPlanByID(t *testing.T) {
 	}
 }
 
+func TestInsertPlan(t *testing.T) {
+	// setup
+	assert := assert.New(t)
+
+	str, mock := getDbMock(t)
+	planDate, _ := time.Parse("2006-01-02", "2021-01-01")
+	plan := &models.Plan{PlanDate: planDate}
+
+	idToUse := 8
+
+	rows := sqlmock.NewRows([]string{"plan_id"}).AddRow(8)
+
+	mock.ExpectBegin()
+	mock.ExpectQuery("^INSERT INTO plans \\(plan_date\\) VALUES \\(\\$1\\) RETURNING plan_id$").
+		WithArgs(planDate).
+		WillReturnRows(rows)
+	mock.ExpectCommit()
+
+	// function under test
+	insertedId, err := str.InsertPlan(plan)
+	// check results
+	assert.Nil(err)
+	assert.EqualValues(idToUse, insertedId)
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("unfulfilled expectations: %s", err)
+	}
+
+}
+
 func TestErrPlanByID(t *testing.T) {
 	assert := assert.New(t)