Refactor provider metadata

coordinator/cloudprovider/gcp/role_test.go

@@ -0,0 +1,55 @@
+package gcp
+
+import (
+	"testing"
+
+	"github.com/edgelesssys/constellation/coordinator/role"
+	"github.com/stretchr/testify/assert"
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m,
+		// https://github.com/census-instrumentation/opencensus-go/issues/1262
+		goleak.IgnoreTopFunction("go.opencensus.io/stats/view.(*worker).start"),
+	)
+}
+
+func TestExtractRole(t *testing.T) {
+	testCases := map[string]struct {
+		metadata map[string]string
+		wantRole role.Role
+	}{
+		"coordinator role": {
+			metadata: map[string]string{
+				roleMetadataKey: role.Coordinator.String(),
+			},
+			wantRole: role.Coordinator,
+		},
+		"node role": {
+			metadata: map[string]string{
+				roleMetadataKey: role.Node.String(),
+			},
+			wantRole: role.Node,
+		},
+		"unknown role": {
+			metadata: map[string]string{
+				roleMetadataKey: "some-unknown-role",
+			},
+			wantRole: role.Unknown,
+		},
+		"no role": {
+			wantRole: role.Unknown,
+		},
+	}
+
+	for name, tc := range testCases {
+		t.Run(name, func(t *testing.T) {
+			assert := assert.New(t)
+
+			role := extractRole(tc.metadata)
+
+			assert.Equal(tc.wantRole, role)
+		})
+	}
+}