[test_scripts] print stack trace when a test fails

bob/fusion/base/test/test_scripts.py

 #!/usr/bin/env python
 
 import os
-import shutil
-import tempfile
 import numpy
-from nose.tools import assert_raises
 from ..script.fuse import fuse
 from ..script.boundary import boundary
 from bob.io.base.test_utils import datafile
 from bob.bio.base.score import load_score
 from click.testing import CliRunner
+from bob.extension.scripts.click_helper import assert_click_runner_result
 
 train_files = [datafile("scores-train-1", 'bob.fusion.base', 'test/data'),
                datafile("scores-train-2", 'bob.fusion.base', 'test/data')]
@@ -35,10 +33,6 @@ def compare_scores(path1, path2):
             assert all(score1[name] == score2[name])
 
 
-def click_result(result):
-    return "%s, %s, %s" % (result.exit_code, result.output, result.exception)
-
-
 def test_fuse():
     runner = CliRunner()
     with runner.isolated_filesystem():
@@ -49,7 +43,7 @@ def test_fuse():
         cmd = [x for xy in zip(train_files, eval_files) for x in xy] + \
             ['-g', 'train', '-g', 'eval', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
         compare_scores(fused_train_file, fused_train_files[0])
         compare_scores(fused_train_file + '-licit', fused_train_files[1])
         compare_scores(fused_train_file + '-spoof', fused_train_files[2])
@@ -61,7 +55,7 @@ def test_fuse():
         cmd = eval_files + ['-g', 'eval', '-a',
                             'llr', '-m', 'fusion_result/Model.pkl']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
         compare_scores(fused_train_file, fused_train_files[0])
         compare_scores(fused_train_file + '-licit', fused_train_files[1])
         compare_scores(fused_train_file + '-spoof', fused_train_files[2])
@@ -77,7 +71,7 @@ def test_fuse_train_only():
         cmd = train_files + \
             ['-g', 'train', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
         compare_scores(fused_train_file, fused_train_files[0])
         compare_scores(fused_train_file + '-licit', fused_train_files[1])
         compare_scores(fused_train_file + '-spoof', fused_train_files[2])
@@ -89,7 +83,7 @@ def test_fuse_with_dev():
         cmd = train_files + train_files + \
             ['-g', 'train', '-g', 'dev', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
 
 
 def test_fuse_inconsistent():
@@ -107,7 +101,7 @@ def test_fuse_inconsistent():
         cmd = train_files[0:1] + [wrong_train2] + \
             ['-g', 'train', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert abs(result.exit_code) == 1, result.exit_code
+        assert_click_runner_result(result, exit_code=1)
         assert isinstance(result.exception, ValueError)
 
         # make inconsistency
@@ -122,7 +116,7 @@ def test_fuse_inconsistent():
         cmd = train_files[0:1] + [wrong_train2] + \
             ['-g', 'train', '-a', 'llr', '--skip-check']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
         assert not result.exception, result.exception
 
 
@@ -132,12 +126,12 @@ def test_boundary():
         cmd = train_files + \
             ['-g', 'train', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
 
         model_file = 'fusion_result/Model.pkl'
         cmd = eval_files + ['-m', model_file, '-t', '0']
         result = runner.invoke(boundary, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
 
 
 def test_boundary_grouping():
@@ -146,15 +140,15 @@ def test_boundary_grouping():
         cmd = train_files + \
             ['-g', 'train', '-a', 'llr']
         result = runner.invoke(fuse, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
 
         model_file = 'fusion_result/Model.pkl'
         cmd1 = eval_files + ['-m', model_file, '-t', '0']
 
         cmd = cmd1 + ['-G', 'random', '-g', '50']
         result = runner.invoke(boundary, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)
 
         cmd = cmd1 + ['-G', 'kmeans', '-g', '50']
         result = runner.invoke(boundary, cmd)
-        assert result.exit_code == 0, click_result(result)
+        assert_click_runner_result(result)