Merge pull request #329 from IvoGoman/optionalNoArgs

fix: make no argument passed validation opt-in

expectations.go

@@ -134,11 +134,27 @@ type ExpectedQuery struct {
 // WithArgs will match given expected args to actual database query arguments.
 // if at least one argument does not match, it will return an error. For specific
 // arguments an sqlmock.Argument interface can be used to match an argument.
+// Must not be used together with WithoutArgs()
 func (e *ExpectedQuery) WithArgs(args ...driver.Value) *ExpectedQuery {
+	if e.noArgs {
+		panic("WithArgs() and WithoutArgs() must not be used together")
+	}
 	e.args = args
 	return e
 }
 
+// WithoutArgs will ensure that no arguments are passed for this query.
+// if at least one argument is passed, it will return an error. This allows
+// for stricter validation of the query arguments.
+// Must no be used together with WithArgs()
+func (e *ExpectedQuery) WithoutArgs() *ExpectedQuery {
+	if len(e.args) > 0 {
+		panic("WithoutArgs() and WithArgs() must not be used together")
+	}
+	e.noArgs = true
+	return e
+}
+
 // RowsWillBeClosed expects this query rows to be closed.
 func (e *ExpectedQuery) RowsWillBeClosed() *ExpectedQuery {
 	e.rowsMustBeClosed = true
@@ -195,11 +211,27 @@ type ExpectedExec struct {
 // WithArgs will match given expected args to actual database exec operation arguments.
 // if at least one argument does not match, it will return an error. For specific
 // arguments an sqlmock.Argument interface can be used to match an argument.
+// Must not be used together with WithoutArgs()
 func (e *ExpectedExec) WithArgs(args ...driver.Value) *ExpectedExec {
+	if len(e.args) > 0 {
+		panic("WithArgs() and WithoutArgs() must not be used together")
+	}
 	e.args = args
 	return e
 }
 
+// WithoutArgs will ensure that no args are passed for this expected database exec action.
+// if at least one argument is passed, it will return an error. This allows for stricter
+// validation of the query arguments.
+// Must not be used together with WithArgs()
+func (e *ExpectedExec) WithoutArgs() *ExpectedExec {
+	if len(e.args) > 0 {
+		panic("WithoutArgs() and WithArgs() must not be used together")
+	}
+	e.noArgs = true
+	return e
+}
+
 // WillReturnError allows to set an error for expected database exec action
 func (e *ExpectedExec) WillReturnError(err error) *ExpectedExec {
 	e.err = err
@@ -338,6 +370,7 @@ type queryBasedExpectation struct {
 	expectSQL string
 	converter driver.ValueConverter
 	args      []driver.Value
+	noArgs    bool // ensure no args are passed
 }
 
 // ExpectedPing is used to manage *sql.DB.Ping expectations.

expectations_before_go18.go

@@ -1,3 +1,4 @@
+//go:build !go1.8
 // +build !go1.8
 
 package sqlmock
@@ -17,7 +18,7 @@ func (e *ExpectedQuery) WillReturnRows(rows *Rows) *ExpectedQuery {
 
 func (e *queryBasedExpectation) argsMatches(args []namedValue) error {
 	if nil == e.args {
-		if len(args) > 0 {
+		if e.noArgs && len(args) > 0 {
 			return fmt.Errorf("expected 0, but got %d arguments", len(args))
 		}
 		return nil

expectations_before_go18_test.go

@@ -1,3 +1,4 @@
+//go:build !go1.8
 // +build !go1.8
 
 package sqlmock
@@ -9,10 +10,15 @@ import (
 )
 
 func TestQueryExpectationArgComparison(t *testing.T) {
-	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter}
+	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter, noArgs: true}
 	against := []namedValue{{Value: int64(5), Ordinal: 1}}
 	if err := e.argsMatches(against); err == nil {
-		t.Error("arguments should not match, since no expectation was set, but argument was passed")
+		t.Error("arguments should not match, since argument was passed, but noArgs was set")
+	}
+
+	e.noArgs = false
+	if err := e.argsMatches(against); err != nil {
+		t.Error("arguments should match, since argument was passed, but no expected args or noArgs was set")
 	}
 
 	e.args = []driver.Value{5, "str"}

expectations_go18.go

@@ -1,3 +1,4 @@
+//go:build go1.8
 // +build go1.8
 
 package sqlmock
@@ -30,7 +31,7 @@ func (e *ExpectedQuery) WillReturnRows(rows ...*Rows) *ExpectedQuery {
 
 func (e *queryBasedExpectation) argsMatches(args []driver.NamedValue) error {
 	if nil == e.args {
-		if len(args) > 0 {
+		if e.noArgs && len(args) > 0 {
 			return fmt.Errorf("expected 0, but got %d arguments", len(args))
 		}
 		return nil

expectations_go18_test.go

@@ -1,3 +1,4 @@
+//go:build go1.8
 // +build go1.8
 
 package sqlmock
@@ -10,10 +11,15 @@ import (
 )
 
 func TestQueryExpectationArgComparison(t *testing.T) {
-	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter}
+	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter, noArgs: true}
 	against := []driver.NamedValue{{Value: int64(5), Ordinal: 1}}
 	if err := e.argsMatches(against); err == nil {
-		t.Error("arguments should not match, since no expectation was set, but argument was passed")
+		t.Error("arguments should not match, since argument was passed, but noArgs was set")
+	}
+
+	e.noArgs = false
+	if err := e.argsMatches(against); err != nil {
+		t.Error("arguments should match, since argument was passed, but no expected args or noArgs was set")
 	}
 
 	e.args = []driver.Value{5, "str"}
@@ -102,10 +108,15 @@ func TestQueryExpectationArgComparisonBool(t *testing.T) {
 }
 
 func TestQueryExpectationNamedArgComparison(t *testing.T) {
-	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter}
+	e := &queryBasedExpectation{converter: driver.DefaultParameterConverter, noArgs: true}
 	against := []driver.NamedValue{{Value: int64(5), Name: "id"}}
 	if err := e.argsMatches(against); err == nil {
-		t.Errorf("arguments should not match, since no expectation was set, but argument was passed")
+		t.Error("arguments should not match, since argument was passed, but noArgs was set")
+	}
+
+	e.noArgs = false
+	if err := e.argsMatches(against); err != nil {
+		t.Error("arguments should match, since argument was passed, but no expected args or noArgs was set")
 	}
 
 	e.args = []driver.Value{

expectations_test.go

@@ -101,3 +101,25 @@ func TestCustomValueConverterQueryScan(t *testing.T) {
 		t.Error(err)
 	}
 }
+
+func TestQueryWithNoArgsAndWithArgsPanic(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			return
+		}
+		t.Error("Expected panic for using WithArgs and ExpectNoArgs together")
+	}()
+	mock := &sqlmock{}
+	mock.ExpectQuery("SELECT (.+) FROM user").WithArgs("John").WithoutArgs()
+}
+
+func TestExecWithNoArgsAndWithArgsPanic(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			return
+		}
+		t.Error("Expected panic for using WithArgs and ExpectNoArgs together")
+	}()
+	mock := &sqlmock{}
+	mock.ExpectExec("^INSERT INTO user").WithArgs("John").WithoutArgs()
+}

sqlmock_go18_test.go

@@ -1,3 +1,4 @@
+//go:build go1.8
 // +build go1.8
 
 package sqlmock
@@ -437,7 +438,6 @@ func TestContextExecErrorDelay(t *testing.T) {
 	// test that return of error is delayed
 	var delay time.Duration = 100 * time.Millisecond
 	mock.ExpectExec("^INSERT INTO articles").
-		WithArgs("hello").
 		WillReturnError(errors.New("slow fail")).
 		WillDelayFor(delay)
 

sqlmock_test.go

@@ -749,6 +749,16 @@ func TestRunExecsWithExpectedErrorMeetsExpectations(t *testing.T) {
 	}
 }
 
+func TestRunExecsWithNoArgsExpectedMeetsExpectations(t *testing.T) {
+	db, dbmock, _ := New()
+	dbmock.ExpectExec("THE FIRST EXEC").WithoutArgs().WillReturnResult(NewResult(0, 0))
+
+	_, err := db.Exec("THE FIRST EXEC", "foobar")
+	if err == nil {
+		t.Fatalf("expected error, but there wasn't any")
+	}
+}
+
 func TestRunQueryWithExpectedErrorMeetsExpectations(t *testing.T) {
 	db, dbmock, _ := New()
 	dbmock.ExpectQuery("THE FIRST QUERY").WillReturnError(fmt.Errorf("big bad bug"))
@@ -959,7 +969,7 @@ func TestPrepareExec(t *testing.T) {
 	mock.ExpectBegin()
 	ep := mock.ExpectPrepare("INSERT INTO ORDERS\\(ID, STATUS\\) VALUES \\(\\?, \\?\\)")
 	for i := 0; i < 3; i++ {
-		ep.ExpectExec().WithArgs(i, "Hello"+strconv.Itoa(i)).WillReturnResult(NewResult(1, 1))
+		ep.ExpectExec().WillReturnResult(NewResult(1, 1))
 	}
 	mock.ExpectCommit()
 	tx, _ := db.Begin()
@@ -1073,7 +1083,7 @@ func TestPreparedStatementCloseExpectation(t *testing.T) {
 	defer db.Close()
 
 	ep := mock.ExpectPrepare("INSERT INTO ORDERS").WillBeClosed()
-	ep.ExpectExec().WithArgs(1, "Hello").WillReturnResult(NewResult(1, 1))
+	ep.ExpectExec().WillReturnResult(NewResult(1, 1))
 
 	stmt, err := db.Prepare("INSERT INTO ORDERS(ID, STATUS) VALUES (?, ?)")
 	if err != nil {
@@ -1104,7 +1114,6 @@ func TestExecExpectationErrorDelay(t *testing.T) {
 	// test that return of error is delayed
 	var delay time.Duration = 100 * time.Millisecond
 	mock.ExpectExec("^INSERT INTO articles").
-		WithArgs("hello").
 		WillReturnError(errors.New("slow fail")).
 		WillDelayFor(delay)
 
@@ -1230,10 +1239,10 @@ func Test_sqlmock_Prepare_and_Exec(t *testing.T) {
 
 	mock.ExpectPrepare("SELECT (.+) FROM users WHERE (.+)")
 	expected := NewResult(1, 1)
-	mock.ExpectExec("SELECT (.+) FROM users WHERE (.+)").WithArgs("test").
+	mock.ExpectExec("SELECT (.+) FROM users WHERE (.+)").
 		WillReturnResult(expected)
 	expectedRows := mock.NewRows([]string{"id", "name", "email"}).AddRow(1, "test", "test@example.com")
-	mock.ExpectQuery("SELECT (.+) FROM users WHERE (.+)").WithArgs("test").WillReturnRows(expectedRows)
+	mock.ExpectQuery("SELECT (.+) FROM users WHERE (.+)").WillReturnRows(expectedRows)
 
 	got, err := mock.(*sqlmock).Prepare(query)
 	if err != nil {
@@ -1326,7 +1335,7 @@ func Test_sqlmock_Query(t *testing.T) {
 	}
 	defer db.Close()
 	expectedRows := mock.NewRows([]string{"id", "name", "email"}).AddRow(1, "test", "test@example.com")
-	mock.ExpectQuery("SELECT (.+) FROM users WHERE (.+)").WithArgs("test").WillReturnRows(expectedRows)
+	mock.ExpectQuery("SELECT (.+) FROM users WHERE (.+)").WillReturnRows(expectedRows)
 	query := "SELECT name, email FROM users WHERE name = ?"
 	rows, err := mock.(*sqlmock).Query(query, []driver.Value{"test"})
 	if err != nil {
@@ -1340,3 +1349,19 @@ func Test_sqlmock_Query(t *testing.T) {
 		return
 	}
 }
+
+func Test_sqlmock_QueryExpectWithoutArgs(t *testing.T) {
+	db, mock, err := New()
+	if err != nil {
+		t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
+	}
+	defer db.Close()
+	expectedRows := mock.NewRows([]string{"id", "name", "email"}).AddRow(1, "test", "test@example.com")
+	mock.ExpectQuery("SELECT (.+) FROM users WHERE (.+)").WillReturnRows(expectedRows).WithoutArgs()
+	query := "SELECT name, email FROM users WHERE name = ?"
+	_, err = mock.(*sqlmock).Query(query, []driver.Value{"test"})
+	if err == nil {
+		t.Errorf("error expected")
+		return
+	}
+}