Fixed issue when project name contains dashes (`-`)

Signed-off-by: Benjamín Guzmán <bg@benjaminguzman.dev>

pkg/compose/viz.go

@@ -42,10 +42,19 @@ func (s *composeService) Viz(_ context.Context, project *types.Project, opts api
 
 	// build graphviz graph
 	var graphBuilder strings.Builder
-	graphBuilder.WriteString("digraph " + project.Name + " {\n")
+
+	// graph name
+	graphBuilder.WriteString("digraph ")
+	writeQuoted(&graphBuilder, project.Name)
+	graphBuilder.WriteString(" {\n")
+
+	// graph layout
+	// dot is the perfect layout for this use case since graph is directed and hierarchical
 	graphBuilder.WriteString(opts.Indentation + "layout=dot;\n")
+
 	addNodes(&graphBuilder, graph, &opts)
 	graphBuilder.WriteByte('\n')
+
 	addEdges(&graphBuilder, graph, &opts)
 	graphBuilder.WriteString("}\n")
 

pkg/compose/viz_test.go

@@ -82,6 +82,20 @@ func TestViz(t *testing.T) {
 					"external": nil,
 				},
 			},
+			{
+				Name:  "With host IP",
+				Image: "user/image-name",
+				DependsOn: map[string]types.ServiceDependency{
+					"service1": {},
+				},
+				Ports: []types.ServicePortConfig{
+					{
+						Published: "8888",
+						Target:    8080,
+						HostIP:    "127.0.0.1",
+					},
+				},
+			},
 		},
 		Networks: types.Networks{
 			"internal": types.NetworkConfig{},
@@ -121,7 +135,7 @@ func TestViz(t *testing.T) {
 		assert.NotContains(t, graphStr, "\n   ", graphStr)
 
 		// check digraph name
-		assert.Contains(t, graphStr, "digraph "+project.Name, graphStr)
+		assert.Contains(t, graphStr, "digraph \""+project.Name+"\"", graphStr)
 
 		// check nodes
 		for _, service := range project.Services {
@@ -179,7 +193,7 @@ func TestViz(t *testing.T) {
 		assert.NotContains(t, graphStr, "\n\t\t", graphStr)
 
 		// check digraph name
-		assert.Contains(t, graphStr, "digraph "+project.Name, graphStr)
+		assert.Contains(t, graphStr, "digraph \""+project.Name+"\"", graphStr)
 
 		// check nodes
 		for _, service := range project.Services {