handled case: missing required (by dependencies) module

internal/buildops/modules_deps.go

@@ -80,6 +80,10 @@ func getModulesOrder(m *mta.MTA) ([]string, error) {
 		requires := getBuildRequires(module)
 		if requires != nil {
 			for _, req := range requires {
+				_, err := m.GetModuleByName(req.Name)
+				if err != nil {
+					return nil, err
+				}
 				deps.Add(req.Name)
 			}
 		}

internal/buildops/modules_deps_test.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/SAP/cloud-mta-build-tool/internal/fs"
 	"github.com/SAP/cloud-mta/mta"
+	"io/ioutil"
 )
 
 var _ = Describe("ModulesDeps", func() {
@@ -67,8 +68,13 @@ var _ = Describe("ModulesDeps", func() {
 			mtaStr := &mta.MTA{Modules: []*mta.Module{{Name: "someproj-db"}, {Name: "someproj-java"}}}
 			Ω(GetModulesNames(mtaStr)).Should(Equal([]string{"someproj-db", "someproj-java"}))
 		})
+		It("Required module not defined", func() {
+			mtaContent, _ := ioutil.ReadFile(getTestPath("mtahtml5", "mtaRequiredModuleNotDefined.yaml"))
+			mtaStr, _ := mta.Unmarshal(mtaContent)
+			_, err := GetModulesNames(mtaStr)
+			Ω(err.Error()).Should(Equal("the abc module is not defined "))
+		})
 	})
-
 })
 
 func executeAndProvideOutput(execute func()) string {

internal/buildops/testdata/mtahtml5/mtaRequiredModuleNotDefined.yaml

@@ -0,0 +1,16 @@
+ID: mtahtml5
+_schema-version: '2.1'
+version: 0.0.1
+
+modules:
+ - name: ui5app
+   type: html5
+   path: testapp
+   parameters:
+      disk-quota: 256M
+      memory: 256M
+   build-parameters:
+      requires:
+      - name: abc
+
+