add configuration for full testing.

todo.txt

@@ -8,6 +8,8 @@
 (C) set up mechanism for adding in new PDEs                 @design +v2.0 +alternate_algorithms
 (C) test involving hydrodynamic similarity                  @tests
 (C) use HDF5 io for fields                                  @design @HDF5 +I/O
+(D) tests should not overwrite other tests (tox_full)       @tests
+(D) generalize interpolation comparison test                @tests
 (D) test anisotropic grids                                  @tests
 (D) test non-cubic domains                                  @tests
 (E) add u-equation algorithm for testing purposes           @tests +alternate_algorithms

tox_full.ini

+[tox]
+envlist = py34
+[testenv]
+sitepackages = True
+whitelist_externals =
+    echo
+    cp
+passenv = LD_LIBRARY_PATH
+changedir =
+    {envtmpdir}
+commands =
+    cp -r {toxinidir}/tests {envtmpdir}
+    python tests/test_io.py
+    python tests/test_interpolation.py
+    python tests/test_interpolation.py --precision double --wd "interp_double"
+    python tests/test_plain.py
+    python tests/test_plain.py --precision double --wd "data/double"
+    python tests/test_scaling.py
+    python tests/test_scaling.py --precision double --wd "data/double"
+    python tests/test_particles.py
+    python tests/test_particles.py --precision double --wd "data/double"
+    python tests/test_time_step.py
+    python tests/test_time_step.py --precision double --wd "data/double"
+    python tests/test_convergence.py
+    python tests/test_convergence.py --precision double --wd "data/double"