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test/tools/DownloadDeeplabV3PlusFixture.m

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+classdef DownloadDeeplabV3PlusFixture < matlab.unittest.fixtures.Fixture
+    % DownloadDeeplabFixture   A fixture for calling downloadPretrainedDeepLabV3Plus if
+    % necessary. This is to ensure that this function is only called once
+    % and only when tests need it. It also provides a teardown to return
+    % the test environment to the expected state before testing.
+
+    % Copyright 2021 The MathWorks, Inc
+
+    properties(Constant)
+        DeeplabV3DataDir = fullfile(getRepoRoot(),'model')
+    end
+
+    properties
+        DeeplabV3Exist (1,1) logical        
+    end
+
+    methods
+        function setup(this)            
+            this.DeeplabV3Exist = exist(fullfile(this.DeeplabV3DataDir,'deepLabV3Plus-voc.mat'),'file')==2;
+
+            % Call this in eval to capture and drop any standard output
+            % that we don't want polluting the test logs.
+            if ~this.DeeplabV3Exist
+            	evalc('helper.downloadPretrainedDeepLabv3Plus();');
+            end       
+        end
+
+        function teardown(this)
+            if this.DeeplabV3Exist
+                delete(fullfile(this.DeeplabV3DataDir,'deepLabV3Plus-voc.mat'));
+            end            
+        end
+    end
+end