Remove error for missing testing aliases

internal/test/test.go

@@ -179,12 +179,9 @@ func testCode(
 	contracts := make(map[string]common.Address, 0)
 	for _, contract := range *state.Contracts() {
 		alias := contract.Aliases.ByNetwork("testing")
-		if alias == nil {
-			return nil, fmt.Errorf(
-				"unable to find 'testing' alias for contract: %s", contract.Name,
-			)
+		if alias != nil {
+			contracts[contract.Name] = common.Address(alias.Address)
 		}
-		contracts[contract.Name] = common.Address(alias.Address)
 	}
 
 	testResults := make(map[string]cdcTests.Results, 0)

internal/test/test_test.go

@@ -209,10 +209,40 @@ func TestExecutingTests(t *testing.T) {
 		assert.ErrorContains(
 			t,
 			err,
-			"unable to find 'testing' alias for contract: Hello",
+			"could not find the address of contract: Hello",
 		)
 	})
 
+	t.Run("without testing alias for common contracts", func(t *testing.T) {
+		t.Parallel()
+
+		// Setup
+		_, state, _ := util.TestMocks(t)
+
+		c := config.Contract{
+			Name:     tests.ContractHelloString.Name,
+			Location: tests.ContractHelloString.Filename,
+			Aliases:  aliases,
+		}
+		state.Contracts().AddOrUpdate(c)
+		// fungibleToken has no `testing` alias, but it is not
+		// actually deployed/used, so there is no errror.
+		fungibleToken := config.Contract{
+			Name:     "FungibleToken",
+			Location: "cadence/contracts/FungibleToken.cdc",
+		}
+		state.Contracts().AddOrUpdate(fungibleToken)
+
+		// Execute script
+		script := tests.TestScriptWithImport
+		testFiles := map[string][]byte{
+			script.Filename: script.Source,
+		}
+		_, err := testCode(testFiles, state, flagsTests{})
+
+		assert.NoError(t, err)
+	})
+
 	t.Run("with file read", func(t *testing.T) {
 		t.Parallel()