pkg/cover/heatmap.go: add blocks count

3 files changed, 66 insertions, 32 deletions

diff --git a/pkg/cover/heatmap.go b/pkg/cover/heatmap.go
index e5d2f4476..9cc3286e5 100644
--- a/pkg/cover/heatmap.go
+++ b/pkg/cover/heatmap.go
@@ -20,11 +20,12 @@ import (
 )
 
 type templateHeatmapRow struct {
-	Items    []*templateHeatmapRow
-	Name     string
-	Coverage []int64
-	IsDir    bool
-	Depth    int
+	Items               []*templateHeatmapRow
+	Name                string
+	Coverage            []int64
+	IsDir               bool
+	Depth               int
+	LastDayInstrumented int64
 
 	builder      map[string]*templateHeatmapRow
 	instrumented map[civil.Date]int64
@@ -72,6 +73,10 @@ func (thm *templateHeatmapRow) prepareDataFor(dates []civil.Date) {
 		}
 		thm.Coverage = append(thm.Coverage, dateCoverage)
 	}
+	if len(dates) > 0 {
+		lastDate := dates[len(dates)-1]
+		thm.LastDayInstrumented = thm.instrumented[lastDate]
+	}
 	for _, item := range thm.builder {
 		item.prepareDataFor(dates)
 	}
@@ -169,6 +174,18 @@ func DoHeatMap(w io.Writer, ns string, dateFrom, dateTo civil.Date) error {
 	return heatmapTemplate.Execute(w, templateData)
 }
 
+func approximateInstrumented(points int64) string {
+	dim := "_"
+	if points > 10000 {
+		dim = "K"
+		points /= 1000
+	}
+	return fmt.Sprintf("%d%s", points, dim)
+}
+
 //go:embed templates/heatmap.html
 var templatesHeatmap string
-var heatmapTemplate = template.Must(template.New("").Parse(templatesHeatmap))
+var templateHeatmapFuncs = template.FuncMap{
+	"approxInstr": approximateInstrumented,
+}
+var heatmapTemplate = template.Must(template.New("").Funcs(templateHeatmapFuncs).Parse(templatesHeatmap))
diff --git a/pkg/cover/heatmap_test.go b/pkg/cover/heatmap_test.go
index c40d14ccc..d450a5243 100644
--- a/pkg/cover/heatmap_test.go
+++ b/pkg/cover/heatmap_test.go
@@ -40,17 +40,19 @@ func TestFilesCoverageToTemplateData(t *testing.T) {
 				Root: &templateHeatmapRow{
 					Items: []*templateHeatmapRow{
 						{
-							Items:    []*templateHeatmapRow{},
-							Name:     "file1",
-							Coverage: []int64{100},
-							IsDir:    false,
-							Depth:    0,
+							Items:               []*templateHeatmapRow{},
+							Name:                "file1",
+							Coverage:            []int64{100},
+							IsDir:               false,
+							Depth:               0,
+							LastDayInstrumented: 1,
 						},
 					},
-					Name:     "",
-					Coverage: []int64{100},
-					IsDir:    false,
-					Depth:    0,
+					Name:                "",
+					Coverage:            []int64{100},
+					IsDir:               false,
+					Depth:               0,
+					LastDayInstrumented: 1,
 				},
 				Dates: []string{"2024-07-01"},
 			},
@@ -77,28 +79,32 @@ func TestFilesCoverageToTemplateData(t *testing.T) {
 						{
 							Items: []*templateHeatmapRow{
 								{
-									Items:    []*templateHeatmapRow{},
-									Name:     "file1",
-									Coverage: []int64{100, 0},
-									IsDir:    false,
-									Depth:    1,
+									Items:               []*templateHeatmapRow{},
+									Name:                "file1",
+									Coverage:            []int64{100, 0},
+									IsDir:               false,
+									Depth:               1,
+									LastDayInstrumented: 0,
 								},
 								{
-									Items:    []*templateHeatmapRow{},
-									Name:     "file2",
-									Coverage: []int64{0, 0},
-									IsDir:    false,
-									Depth:    1,
+									Items:               []*templateHeatmapRow{},
+									Name:                "file2",
+									Coverage:            []int64{0, 0},
+									IsDir:               false,
+									Depth:               1,
+									LastDayInstrumented: 1,
 								},
 							},
-							Name:     "dir",
-							Coverage: []int64{100, 0},
-							IsDir:    true,
-							Depth:    0,
+							Name:                "dir",
+							Coverage:            []int64{100, 0},
+							IsDir:               true,
+							Depth:               0,
+							LastDayInstrumented: 1,
 						},
 					},
-					Name:     "",
-					Coverage: []int64{100, 0},
+					Name:                "",
+					Coverage:            []int64{100, 0},
+					LastDayInstrumented: 1,
 				},
 				Dates: []string{"2024-07-01", "2024-07-02"},
 			},
diff --git a/pkg/cover/templates/heatmap.html b/pkg/cover/templates/heatmap.html
index 9f5d1da2c..4d3e159b2 100644
--- a/pkg/cover/templates/heatmap.html
+++ b/pkg/cover/templates/heatmap.html
@@ -15,6 +15,11 @@
       display: inline-block;
       width: 50px;
     }
+    .instrumented_column {
+      display: inline-block;
+      width: 70px;
+      text-align: right;
+    }
     .tree_depth_0 {width: 0px;}
     .tree_depth_1 {width: 20px;}
     .tree_depth_2 {width: 40px;}
@@ -64,13 +69,16 @@
     </li>
     <li>
       <div class="first_column bold">
-        total
+        total covered
       </div>
       {{ range $cov := .Root.Coverage }}
         <div class="date_column">
           {{ $cov }}%
         </div>
       {{ end }}
+      <div class="instrumented_column">
+        of {{ approxInstr .Root.LastDayInstrumented }} blocks
+      </div>
     </li>
     <br>
     {{template "dir" .Root}}
@@ -105,6 +113,9 @@
             {{ $cov }}%
           </div>
         {{ end }}
+        <div class="instrumented_column">
+          {{ approxInstr $child.LastDayInstrumented }}
+        </div>
       </div>
       {{ if $child.IsDir }}
         <ul class="nested">