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( function ( $, mw ) {
QUnit.module( 'mediawiki.errorLogger', QUnit.newMwEnvironment() );
QUnit.test( 'installGlobalHandler', 7, function ( assert ) {
var w = {},
errorMessage = 'Foo',
errorUrl = 'http://example.com',
errorLine = '123',
errorColumn = '45',
errorObject = new Error( 'Foo'),
oldHandler = this.sandbox.stub();
this.sandbox.stub( mw, 'track' );
mw.errorLogger.installGlobalHandler( w );
assert.ok( w.onerror, 'Global handler has been installed' );
assert.strictEqual( w.onerror( errorMessage, errorUrl, errorLine ), false,
'Global handler returns false when there is no previous handler' );
sinon.assert.calledWithExactly( mw.track, 'global.error',
sinon.match( { errorMessage: errorMessage, url: errorUrl, lineNumber: errorLine } ) );
mw.track.reset();
w.onerror( errorMessage, errorUrl, errorLine, errorColumn, errorObject );
sinon.assert.calledWithExactly( mw.track, 'global.error',
sinon.match( { errorMessage: errorMessage, url: errorUrl, lineNumber: errorLine,
columnNumber: errorColumn, errorObject: errorObject } ) );
w = { onerror: oldHandler };
mw.errorLogger.installGlobalHandler( w );
w.onerror( errorMessage, errorUrl, errorLine );
sinon.assert.calledWithExactly( oldHandler, errorMessage, errorUrl, errorLine );
oldHandler.returns( false );
assert.strictEqual( w.onerror( errorMessage, errorUrl, errorLine ), false,
'Global handler preserves false return from previous handler' );
oldHandler.returns( true );
assert.strictEqual( w.onerror( errorMessage, errorUrl, errorLine ), true,
'Global handler preserves true return from previous handler' );
} );
}( jQuery, mediaWiki ) );
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