fix(engine): support chart template recursion

pkg/engine/engine.go

@@ -104,13 +104,16 @@ func (e *Engine) render(tpls map[string]string, v interface{}) (map[string]strin
 // allTemplates returns all templates for a chart and its dependencies.
 func allTemplates(c *chart.Chart) map[string]string {
 	templates := map[string]string{}
+	recAllTpls(c, templates)
+	return templates
+}
+
+func recAllTpls(c *chart.Chart, templates map[string]string) {
 	for _, child := range c.Dependencies {
-		for _, t := range child.Templates {
-			templates[t.Name] = string(t.Data)
-		}
+		recAllTpls(child, templates)
 	}
 	for _, t := range c.Templates {
 		templates[t.Name] = string(t.Data)
 	}
-	return templates
+
 }

pkg/engine/engine_test.go

@@ -90,16 +90,23 @@ func TestAllTemplates(t *testing.T) {
 			{Name: "bar", Data: []byte("bar")},
 		},
 		Dependencies: []*chart.Chart{
-			{Templates: []*chart.Template{
-				{Name: "pinky", Data: []byte("pinky")},
-				{Name: "brain", Data: []byte("brain")},
-			}},
+			{
+				Templates: []*chart.Template{
+					{Name: "pinky", Data: []byte("pinky")},
+					{Name: "brain", Data: []byte("brain")},
+				},
+				Dependencies: []*chart.Chart{
+					{Templates: []*chart.Template{
+						{Name: "innermost", Data: []byte("innermost")},
+					}},
+				},
+			},
 		},
 	}
 
 	tpls := allTemplates(ch1)
-	if len(tpls) != 4 {
-		t.Errorf("Expected 4 charts, got %d", len(tpls))
+	if len(tpls) != 5 {
+		t.Errorf("Expected 5 charts, got %d", len(tpls))
 	}
 }
 
@@ -112,9 +119,11 @@ func TestRenderDependency(t *testing.T) {
 			{Name: "outer", Data: []byte(toptpl)},
 		},
 		Dependencies: []*chart.Chart{
-			{Templates: []*chart.Template{
-				{Name: "inner", Data: []byte(deptpl)},
-			}},
+			{
+				Templates: []*chart.Template{
+					{Name: "inner", Data: []byte(deptpl)},
+				},
+			},
 		},
 	}