mediawiki-extensions-Visual.../tests/ve/ve.dm.BranchNode.test.js

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module( 've/dm' );
test( 've.dm.BranchNode', 20, function() {
// Example data (integers) is used for simplicity of testing
var node1 = new ve.dm.BranchNode( '1' ),
node2 = new ve.dm.BranchNode( '2' ),
node3 = new ve.dm.BranchNode(
'3',
null,
[new ve.dm.BranchNode( '3a' )]
),
node4 = new ve.dm.BranchNode(
'4',
null,
[new ve.dm.BranchNode( '4a' ), new ve.dm.BranchNode( '4b' )]
);
// Event triggering is detected using a callback that increments a counter
var updates = 0;
node1.on( 'update', function() {
updates++;
} );
var attaches = 0;
node2.on( 'afterAttach', function() {
attaches++;
} );
node3.on( 'afterAttach', function() {
attaches++;
} );
node4.on( 'afterAttach', function() {
attaches++;
} );
var detaches = 0;
node2.on( 'afterDetach', function() {
detaches++;
} );
node3.on( 'afterDetach', function() {
detaches++;
} );
node4.on( 'afterDetach', function() {
detaches++;
} );
function strictArrayValueEqual( a, b, msg ) {
if ( a.length !== b.length ) {
ok( false, msg );
return;
}
for ( var i = 0; i < a.length; i++ ) {
if ( a[i] !== b[i] ) {
ok( false, msg );
return;
}
}
ok( true, msg );
}
// Test 1
node1.push( node2 );
equal( updates, 1, 'push emits update events' );
strictArrayValueEqual( node1.getChildren(), [node2], 'push appends a node' );
// Test 2
equal( attaches, 1, 'push attaches added node' );
// Test 3, 4
node1.unshift( node3 );
equal( updates, 2, 'unshift emits update events' );
strictArrayValueEqual( node1.getChildren(), [node3, node2], 'unshift prepends a node' );
// Test 5
equal( attaches, 2, 'unshift attaches added node' );
// Test 6, 7
node1.splice( 1, 0, node4 );
equal( updates, 3, 'splice emits update events' );
strictArrayValueEqual( node1.getChildren(), [node3, node4, node2], 'splice inserts nodes' );
// Test 8
equal( attaches, 3, 'splice attaches added nodes' );
// Test 9
node1.reverse();
equal( updates, 4, 'reverse emits update events' );
// Test 10, 11
node1.sort( function( a, b ) {
return a.getChildren().length < b.getChildren().length ? -1 : 1;
} );
equal( updates, 5, 'sort emits update events' );
strictArrayValueEqual(
node1.getChildren(),
[node2, node3, node4],
'sort reorderes nodes correctly'
);
// Test 12, 13
node1.pop();
equal( updates, 6, 'pop emits update events' );
strictArrayValueEqual(
node1.getChildren(),
[node2, node3],
'pop removes the last child node'
);
// Test 14
equal( detaches, 1, 'pop detaches a node' );
// Test 15, 16
node1.shift();
equal( updates, 7, 've.ModelNode emits update events on shift' );
strictArrayValueEqual(
node1.getChildren(),
[node3],
've.ModelNode removes first Node on shift'
);
// Test 17
equal( detaches, 2, 'shift detaches a node' );
// Test 18
strictEqual( node3.getParent(), node1, 'getParent returns the correct reference' );
// Test 19
try {
var view = node3.createView();
} catch ( err ){
ok( true, 'createView throws an exception when not overridden' );
}
} );