Get an observation.

datastore/datastore.go

@@ -14,6 +14,7 @@ type Datastore struct {
 	Species          models.SpeciesService
 	Strains          models.StrainsService
 	ObservationTypes models.ObservationTypesService
+	Observations     models.ObservationsService
 	dbh              modl.SqlExecutor
 }
 
@@ -35,6 +36,7 @@ func NewDatastore(dbh modl.SqlExecutor) *Datastore {
 	d.Species = &speciesStore{d}
 	d.Strains = &strainsStore{d}
 	d.ObservationTypes = &observationTypesStore{d}
+	d.Observations = &observationsStore{d}
 	return d
 }
 
@@ -45,5 +47,6 @@ func NewMockDatastore() *Datastore {
 		Species:          &models.MockSpeciesService{},
 		Strains:          &models.MockStrainsService{},
 		ObservationTypes: &models.MockObservationTypesService{},
+		Observations:     &models.MockObservationsService{},
 	}
 }

datastore/observations.go

@@ -0,0 +1,22 @@
+package datastore
+
+import "github.com/thermokarst/bactdb/models"
+
+func init() {
+	DB.AddTableWithName(models.Observation{}, "observations").SetKeys(true, "Id")
+}
+
+type observationsStore struct {
+	*Datastore
+}
+
+func (s *observationsStore) Get(id int64) (*models.Observation, error) {
+	var observation []*models.Observation
+	if err := s.dbh.Select(&observation, `SELECT * FROM observations WHERE id=$1;`, id); err != nil {
+		return nil, err
+	}
+	if len(observation) == 0 {
+		return nil, models.ErrObservationNotFound
+	}
+	return observation[0], nil
+}

datastore/observations_test.go

@@ -0,0 +1,47 @@
+package datastore
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/jmoiron/modl"
+	"github.com/thermokarst/bactdb/models"
+)
+
+func insertObservation(t *testing.T, tx *modl.Transaction) *models.Observation {
+	// clean up our target table
+	tx.Exec(`DELETE FROM observations;`)
+	observation := newObservation(t, tx)
+	if err := tx.Insert(observation); err != nil {
+		t.Fatal(err)
+	}
+	return observation
+}
+
+func newObservation(t *testing.T, tx *modl.Transaction) *models.Observation {
+	// we want to create and insert an observation type record, too.
+	observation_type := insertObservationType(t, tx)
+	return &models.Observation{ObservationName: "Test Observation",
+		ObservationTypeId: observation_type.Id}
+}
+
+func TestObservationsStore_Get_db(t *testing.T) {
+	tx, _ := DB.Begin()
+	defer tx.Rollback()
+
+	want := insertObservation(t, tx)
+
+	d := NewDatastore(tx)
+
+	observation, err := d.Observations.Get(want.Id)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	normalizeTime(&want.CreatedAt, &want.UpdatedAt, &want.DeletedAt)
+	normalizeTime(&observation.CreatedAt, &observation.UpdatedAt, &observation.DeletedAt)
+
+	if !reflect.DeepEqual(observation, want) {
+		t.Errorf("got observation %+v, want %+v", observation, want)
+	}
+}