org.assertj.db.api.navigation

Interface ToValueFromColumn<V extends ValueAssert>

Type Parameters:

V - The class of a assertion on a value (an sub-class of ValueAssert).

All Known Subinterfaces:

OriginWithValuesFromColumn

All Known Implementing Classes:

ChangeColumnAssert, ChangeColumnValueAssert

public interface ToValueFromColumn<V extends ValueAssert>

Defines methods to navigate to a value from a Column (a column from a Change}.

The different methods return an assertion on one value ValueAssert.

These methods exists when navigating (at the beginning assertThat()) from changes.

As shown in the diagram below, if navigating from changes, it is possible to call the method to navigate to a ColumnAssert from :

• a column of a change (ChangeColumnAssert)
• a value of a column of a change (ChangeColumnValueAssert)

It is important to keep in mind that the methods are executed from the point of view of the last instance with assertion methods on a column of a change (ChangeAssert).
So all the lines of code below are equivalent : they point on the value at end point of first column.

 
 assertThat(changes).change().column().valueAtEndPoint()......;                                           // Point directly on the value at end point
 // Use the returnToOrigin() method of AbstractAssertWithOrigin to return on the column and access to the value at the end point
 assertThat(changes).change().column().valueAtStartPoint().returnToOrigin().valueAtEndPoint()......;
 assertThat(changes).change().column().valueAtStartPoint().valueAtEndPoint()......;                       // Same as precedent but returnToOrigin() is implicit
 assertThat(changes).change().row().value().change(0).column().valueAtEndPoint()......;
 // Equivalent to the precedent but with the use of the returnToOrigin() method of AbstractAssertWithOrigin
 assertThat(changes).change().row().value().returnToOrigin().returnToOrigin().returnToOrigin().change(0).column().value(1)......;
 
 

Author:

Régis Pouiller

Method Summary

Methods

Modifier and Type	Method and Description
V	valueAtEndPoint() Returns assertion methods on the value at the end point.
V	valueAtStartPoint() Returns assertion methods on the value at the start point.

Method Detail

valueAtStartPoint

V valueAtStartPoint()

Returns assertion methods on the value at the start point.

Returns:

An object to make assertions on the next value.

See Also:

ChangeColumnAssert.valueAtStartPoint, ChangeColumnValueAssert.valueAtStartPoint()

valueAtEndPoint

V valueAtEndPoint()

Returns assertion methods on the value at the end point.

Returns:

An object to make assertions on the value.

See Also:

ChangeColumnAssert.valueAtEndPoint, ChangeColumnValueAssert.valueAtEndPoint()