Add maskStreaks to test exposure util

Need to run MaskStreaks to add the STREAK plane to the Exposure,
otherwise the pixelFlags plugin will fail.

python/lsst/ip/diffim/utils.py

@@ -36,6 +36,7 @@
 import lsst.meas.algorithms as measAlg
 import lsst.meas.base as measBase
 from lsst.meas.algorithms.testUtils import plantSources
+from lsst.pipe.tasks.maskStreaks import MaskStreaksTask
 from lsst.pex.exceptions import InvalidParameterError
 from lsst.utils.logging import getLogger
 from .dipoleFitTask import DipoleFitAlgorithm
@@ -1256,6 +1257,8 @@ def detectTestSources(exposure):
 
     schema = afwTable.SourceTable.makeMinimalSchema()
     selectDetection = measAlg.SourceDetectionTask(schema=schema)
+    # Run streak detection to create the STREAK mask plane.
+    maskStreaks = MaskStreaksTask()
     selectMeasurement = measBase.SingleFrameMeasurementTask(schema=schema)
     table = afwTable.SourceTable.make(schema)
 
@@ -1265,6 +1268,7 @@ def detectTestSources(exposure):
         sigma=None,  # The appropriate sigma is calculated from the PSF
         doSmooth=True
     )
+    maskStreaks.run(exposure)
     selectSources = detRet.sources
     selectMeasurement.run(measCat=selectSources, exposure=exposure)