Infer a default estimate from same-project/label averages

1 files changed, 90 insertions, 0 deletions

diff --git a/internal/store/estimate_inference_test.go b/internal/store/estimate_inference_test.go
new file mode 100644
index 0000000..9321f11
--- /dev/null
+++ b/internal/store/estimate_inference_test.go
@@ -0,0 +1,90 @@
+// internal/store/estimate_inference_test.go
+package store
+
+import (
+	"testing"
+	"time"
+
+	"task-dashboard/internal/models"
+)
+
+func TestAverageEstimateForProject_AveragesUserEnteredEstimates(t *testing.T) {
+	s := newNativeTasksTestStore(t)
+	project, err := s.CreateProject("Sailing prep", "#3B82F6")
+	if err != nil {
+		t.Fatal(err)
+	}
+	due := time.Now()
+	for _, minutes := range []int{30, 60} {
+		task := models.Task{ID: newTaskID(), Content: "task", ProjectID: project.ID, EstimatedMinutes: minutes, DueDate: &due}
+		if err := s.CreateNativeTask(task); err != nil {
+			t.Fatal(err)
+		}
+	}
+	// An unestimated task under the same project must not skew the average.
+	if err := s.CreateNativeTask(models.Task{ID: "t-unestimated", Content: "no estimate", ProjectID: project.ID}); err != nil {
+		t.Fatal(err)
+	}
+
+	avg, ok, err := s.AverageEstimateForProject(project.ID)
+	if err != nil {
+		t.Fatalf("AverageEstimateForProject: %v", err)
+	}
+	if !ok {
+		t.Fatal("expected ok = true")
+	}
+	if avg != 45 {
+		t.Errorf("avg = %d, want 45", avg)
+	}
+}
+
+func TestAverageEstimateForProject_NoEstimatedTasks_ReturnsNotOK(t *testing.T) {
+	s := newNativeTasksTestStore(t)
+	project, err := s.CreateProject("Empty", "#111111")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, ok, err := s.AverageEstimateForProject(project.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if ok {
+		t.Error("expected ok = false when no tasks have an estimate")
+	}
+}
+
+func TestAverageEstimateForLabel_AveragesUserEnteredEstimates(t *testing.T) {
+	s := newNativeTasksTestStore(t)
+	for _, minutes := range []int{20, 40} {
+		task := models.Task{ID: newTaskID(), Content: "task", Labels: []string{"errands"}, EstimatedMinutes: minutes}
+		if err := s.CreateNativeTask(task); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := s.CreateNativeTask(models.Task{ID: "t-other-label", Content: "other", Labels: []string{"unrelated"}, EstimatedMinutes: 100}); err != nil {
+		t.Fatal(err)
+	}
+
+	avg, ok, err := s.AverageEstimateForLabel("errands")
+	if err != nil {
+		t.Fatalf("AverageEstimateForLabel: %v", err)
+	}
+	if !ok {
+		t.Fatal("expected ok = true")
+	}
+	if avg != 30 {
+		t.Errorf("avg = %d, want 30", avg)
+	}
+}
+
+func TestAverageEstimateForLabel_NoMatches_ReturnsNotOK(t *testing.T) {
+	s := newNativeTasksTestStore(t)
+	_, ok, err := s.AverageEstimateForLabel("nonexistent")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if ok {
+		t.Error("expected ok = false")
+	}
+}