Issue #19623: Fixed writing to unseekable files in the aifc module.

3 files changed, 17 insertions, 37 deletions

diff --git a/Lib/test/test_aifc.py b/Lib/test/test_aifc.py
index 041b23688c..ab5143787b 100644
--- a/Lib/test/test_aifc.py
+++ b/Lib/test/test_aifc.py
@@ -14,9 +14,6 @@ class AifcTest(audiotests.AudioWriteTests,
     module = aifc
     close_fd = True
     test_unseekable_read = None
-    test_unseekable_write = None
-    test_unseekable_incompleted_write = None
-    test_unseekable_overflowed_write = None
 
 
 class AifcPCM8Test(AifcTest, unittest.TestCase):
diff --git a/Lib/test/test_sunau.py b/Lib/test/test_sunau.py
index af9ffec622..0f4134e982 100644
--- a/Lib/test/test_sunau.py
+++ b/Lib/test/test_sunau.py
@@ -6,10 +6,12 @@ import sys
 import sunau
 
 
-class SunauPCM8Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
+class SunauTest(audiotests.AudioWriteTests,
+                audiotests.AudioTestsWithSourceFile):
     module = sunau
+
+
+class SunauPCM8Test(SunauTest, unittest.TestCase):
     sndfilename = 'pluck-pcm8.au'
     sndfilenframes = 3307
     nchannels = 2
@@ -26,10 +28,7 @@ class SunauPCM8Test(audiotests.AudioWriteTests,
       """)
 
 
-class SunauPCM16Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = sunau
+class SunauPCM16Test(SunauTest, unittest.TestCase):
     sndfilename = 'pluck-pcm16.au'
     sndfilenframes = 3307
     nchannels = 2
@@ -48,10 +47,7 @@ class SunauPCM16Test(audiotests.AudioWriteTests,
       """)
 
 
-class SunauPCM24Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = sunau
+class SunauPCM24Test(SunauTest, unittest.TestCase):
     sndfilename = 'pluck-pcm24.au'
     sndfilenframes = 3307
     nchannels = 2
@@ -76,10 +72,7 @@ class SunauPCM24Test(audiotests.AudioWriteTests,
       """)
 
 
-class SunauPCM32Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = sunau
+class SunauPCM32Test(SunauTest, unittest.TestCase):
     sndfilename = 'pluck-pcm32.au'
     sndfilenframes = 3307
     nchannels = 2
@@ -104,10 +97,7 @@ class SunauPCM32Test(audiotests.AudioWriteTests,
       """)
 
 
-class SunauULAWTest(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = sunau
+class SunauULAWTest(SunauTest, unittest.TestCase):
     sndfilename = 'pluck-ulaw.au'
     sndfilenframes = 3307
     nchannels = 2
diff --git a/Lib/test/test_wave.py b/Lib/test/test_wave.py
index 549ca89615..3eff773bca 100644
--- a/Lib/test/test_wave.py
+++ b/Lib/test/test_wave.py
@@ -6,10 +6,12 @@ import sys
 import wave
 
 
-class WavePCM8Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
+class WaveTest(audiotests.AudioWriteTests,
+               audiotests.AudioTestsWithSourceFile):
     module = wave
+
+
+class WavePCM8Test(WaveTest, unittest.TestCase):
     sndfilename = 'pluck-pcm8.wav'
     sndfilenframes = 3307
     nchannels = 2
@@ -26,10 +28,7 @@ class WavePCM8Test(audiotests.AudioWriteTests,
       """)
 
 
-class WavePCM16Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = wave
+class WavePCM16Test(WaveTest, unittest.TestCase):
     sndfilename = 'pluck-pcm16.wav'
     sndfilenframes = 3307
     nchannels = 2
@@ -50,10 +49,7 @@ class WavePCM16Test(audiotests.AudioWriteTests,
         frames = byteswap(frames, 2)
 
 
-class WavePCM24Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = wave
+class WavePCM24Test(WaveTest, unittest.TestCase):
     sndfilename = 'pluck-pcm24.wav'
     sndfilenframes = 3307
     nchannels = 2
@@ -80,10 +76,7 @@ class WavePCM24Test(audiotests.AudioWriteTests,
         frames = byteswap(frames, 3)
 
 
-class WavePCM32Test(audiotests.AudioWriteTests,
-        audiotests.AudioTestsWithSourceFile,
-        unittest.TestCase):
-    module = wave
+class WavePCM32Test(WaveTest, unittest.TestCase):
     sndfilename = 'pluck-pcm32.wav'
     sndfilenframes = 3307
     nchannels = 2