create tools/tests/run_all.py to run all our Python self-tests within tools

tools/tests/run.sh

 #!/bin/bash
 
 # Tests for our tools.
 #
 # TODO: currently, this only passes on Linux (which is the platform that
 # the housekeeper bot runs on, e.g.
 # http://70.32.156.51:10117/builders/Skia_PerCommit_House_Keeping/builds/1415/steps/RunToolSelfTests/logs/stdio )
 # See https://code.google.com/p/skia/issues/detail?id=677
 # ('make tools/tests/run.sh work cross-platform')
 # Ideally, these tests should pass on all development platforms...
@@ skipping 199 matching lines @@
 #
 
 # Parse a collection of bench data
 PLATFORM=Perf-Android-Nexus7-Tegra3-Arm7-Release
 REVISION=69c9e1a7261a3c8361e2b2c109d6340862149e34
 download_bench_rawdata $PLATFORM $REVISION "$BENCHDATA_FILE_SUFFIXES_NO_INDIVIDUAL_TILES"
 download_bench_rawdata $PLATFORM $REVISION "$BENCHDATA_FILE_SUFFIXES_YES_INDIVIDUAL_TILES"
 benchalert_test $PLATFORM $REVISION
 
 #
-# Run self test for skimage ...
-#
-
-COMMAND="python tools/tests/skimage_self_test.py"
-echo "$COMMAND"
-$COMMAND
-ret=$?
-if [ $ret -ne 0 ]; then
-    echo "skimage self tests failed."
-    exit 1
-fi
-
-#
 # Test rebaseline.py ...
 #
 
 REBASELINE_INPUT=tools/tests/rebaseline/input
 REBASELINE_OUTPUT=tools/tests/rebaseline/output
 rebaseline_test "$REBASELINE_INPUT/json1" "--actuals-base-url $REBASELINE_INPUT/json1 --builders Test-Android-GalaxyNexus-SGX540-Arm7-Debug Test-Win7-ShuttleA-HD2000-x86-Release" "$REBASELINE_OUTPUT/using-json1-expectations"
 rebaseline_test "$REBASELINE_INPUT/json1" "--actuals-base-url $REBASELINE_INPUT/json1 --bugs 1234 5678 --builders Test-Android-GalaxyNexus-SGX540-Arm7-Debug Test-Win7-ShuttleA-HD2000-x86-Release --notes notes_content --unreviewed" "$REBASELINE_OUTPUT/marked-unreviewed"
 rebaseline_test "$REBASELINE_INPUT/json1" "--actuals-base-url $REBASELINE_INPUT/json1 --add-new --builders Test-Android-GalaxyNexus-SGX540-Arm7-Debug Test-Mac10.6-MacMini4.1-GeForce320M-x86-Release Test-Win7-ShuttleA-HD2000-x86-Release" "$REBASELINE_OUTPUT/add-new"
 
 #
 # Test jsondiff.py ...
 #
 
 JSONDIFF_INPUT=tools/tests/jsondiff/input
 JSONDIFF_OUTPUT=tools/tests/jsondiff/output
 jsondiff_test "$JSONDIFF_INPUT/old.json $JSONDIFF_INPUT/new.json" "$JSONDIFF_OUTPUT/old-vs-new"
 
 
+#
+# Launch all the self-tests which have been written in Python.
+#
+# TODO: Over time, we should move all of our tests into Python, and delete
+# the bash tests above.
+# See https://code.google.com/p/skia/issues/detail?id=677
+# ('make tools/tests/run.sh work cross-platform')
+#
+
+COMMAND="python tools/tests/run_all.py"
+echo "$COMMAND"
+$COMMAND
+ret=$?
+if [ $ret -ne 0 ]; then
+    echo "failure in Python self-tests; see stack trace above"
+    exit 1
+fi
+
+
 echo "All tests passed."