mem tests

go.mod

@@ -1,3 +1,5 @@
 module code.ewintr.nl/planner
 
 go 1.21.5
+
+require github.com/google/go-cmp v0.6.0 // indirect

go.sum

@@ -0,0 +1,2 @@
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=

service/memory.go

@@ -16,6 +16,15 @@ func (m *Memory) StoreProject(project Project) error {
 	return nil
 }
 
+func (m *Memory) RemoveProject(id string) error {
+	if _, ok := m.projects[id]; !ok {
+		return ErrNotFound
+	}
+	delete(m.projects, id)
+
+	return nil
+}
+
 func (m *Memory) FindProject(id string) (Project, error) {
 	project, ok := m.projects[id]
 	if !ok {

service/memory_test.go

@@ -4,12 +4,15 @@ import (
 	"testing"
 
 	"code.ewintr.nl/planner/service"
+	"github.com/google/go-cmp/cmp"
 )
 
 func TestMemoryProjects(t *testing.T) {
 	t.Parallel()
 
 	mem := service.NewMemory()
+
+	t.Log("start empty")
 	actProjects, actErr := mem.FindAllProjects()
 	if actErr != nil {
 		t.Errorf("exp nil, got %v", actErr)
@@ -17,4 +20,51 @@ func TestMemoryProjects(t *testing.T) {
 	if len(actProjects) != 0 {
 		t.Errorf("exp 0, got %d", len(actProjects))
 	}
+
+	t.Log("add one")
+	p1 := service.Project{
+		ID:   "p1",
+		Name: "project 1",
+	}
+	p2 := service.Project{
+		ID:   "p2",
+		Name: "project 2",
+	}
+	if actErr := mem.StoreProject(p1); actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	actProjects, actErr = mem.FindAllProjects()
+	if actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	expProjects := []service.Project{p1}
+	if diff := cmp.Diff(expProjects, actProjects); diff != "" {
+		t.Errorf("(-exp, +got):\n%s", diff)
+	}
+
+	t.Log("add second")
+	if actErr := mem.StoreProject(p2); actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	actProjects, actErr = mem.FindAllProjects()
+	if actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	expProjects = []service.Project{p1, p2}
+	if diff := cmp.Diff(expProjects, actProjects); diff != "" {
+		t.Errorf("(-exp, +act):\n%s", diff)
+	}
+
+	t.Log("remove first")
+	if actErr := mem.RemoveProject(p1.ID); actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	actProjects, actErr = mem.FindAllProjects()
+	if actErr != nil {
+		t.Errorf("exp nil, got %v", actErr)
+	}
+	expProjects = []service.Project{p2}
+	if diff := cmp.Diff(expProjects, actProjects); diff != "" {
+		t.Errorf("-exp, +act:\b%s", diff)
+	}
 }