added efield test case

git-svn-id: http://qboxcode.org/svn/qb/branches/efield@1640 cba15fb0-1239-40c8-b417-11db7ca47a34

test/efield/Makefile

+include ../Makefile.inc
+all: test.r
+clean:
+	rm -f test.r test.xml
+
+test.r: test.i
+	$(QBOX_CMD) $^ > $@

test/efield/Si_VBC_LDA-1.0.xml

+../potentials/Si_VBC_LDA-1.0.xml
\ No newline at end of file

test/efield/sample.xsd

+../../xml/sample.xsd
\ No newline at end of file

test/efield/species.xsd

+../../xml/species.xsd
\ No newline at end of file

test/efield/test.i

+set nrowmax 3 
+# Si4 ground state
+set cell 16 0 0  0 16 0  0 0 16
+species silicon Si_VBC_LDA-1.0.xml
+atom Si1 silicon  3.700  0.000  1.000
+atom Si2 silicon  0.000  2.200  1.000
+atom Si3 silicon -3.700  0.000  1.000
+atom Si4 silicon  0.000 -2.200  1.000
+
+set ecut 6
+set wf_dyn PSDA
+set ecutprec 2
+
+randomize_wf
+run 0 200
+
+set e_field 0 0  0.001
+set polarization BERRY
+run 0 100
+set polarization MLWF_REF
+run 0 100
+set polarization MLWF_REF_Q
+run 0 100