Generate package within 63 character limit when creating function (#2482)

pkg/fission-cli/cmd/function/create_test.go

@@ -0,0 +1,42 @@
+package function
+
+import (
+	"testing"
+
+	uuid "github.com/satori/go.uuid"
+)
+
+func TestGeneratePackageName(t *testing.T) {
+	for _, test := range []struct {
+		name     string
+		fnName   string
+		expected int
+	}{
+		{
+			name:     "name of package should be less than or equal to 63 characters, if function name is equal to 26 characters",
+			fnName:   "test-function-with-26-char",
+			expected: 63,
+		},
+		{
+			name:     "name of package should be less than or equal to 63 characters, if function name is more than 26 characters",
+			fnName:   "testfunctionwithmorethan26character",
+			expected: 63,
+		},
+		{
+			name:     "name of package should be less than or equal to 63 characters, if function name is less than 26 characters",
+			fnName:   "fission-function",
+			expected: 63,
+		},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			id, err := uuid.NewV4()
+			if err != nil {
+				t.Fatal(err)
+			}
+			pkgName := generatePackageName(test.fnName, id.String())
+			if len(pkgName) > test.expected {
+				t.Errorf("expected len of package to be %v, got %v", test.expected, len(pkgName))
+			}
+		})
+	}
+}