Unit test for chgres_cube routine 'read_vcoord_info' (#569)

Fixes #499.

sorc/chgres_cube.fd/atmosphere.F90

@@ -104,6 +104,7 @@ module atmosphere
                                            !! target grid
 
  public :: atmosphere_driver
+ public :: read_vcoord_info
 
  contains
 

tests/chgres_cube/CMakeLists.txt

@@ -26,6 +26,8 @@ execute_process( COMMAND ${CMAKE_COMMAND} -E copy
     ${CMAKE_CURRENT_SOURCE_DIR}/data/config_gaussian_nemsio.nml ${CMAKE_CURRENT_BINARY_DIR}/data/config_gaussian_nemsio.nml)
 execute_process( COMMAND ${CMAKE_COMMAND} -E copy
     ${CMAKE_CURRENT_SOURCE_DIR}/data/config_gfs_grib2.nml ${CMAKE_CURRENT_BINARY_DIR}/data/config_gfs_grib2.nml)
+execute_process( COMMAND ${CMAKE_COMMAND} -E copy
+    ${CMAKE_CURRENT_SOURCE_DIR}/data/global_hyblev.l28.txt ${CMAKE_CURRENT_BINARY_DIR}/data/global_hyblev.l28.txt)
 execute_process( COMMAND ${CMAKE_COMMAND} -E copy
     ${CMAKE_CURRENT_SOURCE_DIR}/data/config_spectral_sigio.nml ${CMAKE_CURRENT_BINARY_DIR}/data/config_spectral_sigio.nml)
 execute_process( COMMAND ${CMAKE_COMMAND} -E copy
@@ -168,3 +170,7 @@ add_mpi_test(chgres_cube-ftst_surface_nst_landfill
   EXECUTABLE ${CMAKE_CURRENT_BINARY_DIR}/ftst_surface_nst_landfill
   NUMPROCS 1
   TIMEOUT 60)
+
+add_executable(ftst_read_vcoord ftst_read_vcoord.F90)
+target_link_libraries(ftst_read_vcoord chgres_cube_lib)
+add_test(NAME chgres_cube-ftst_read_vcoord COMMAND ftst_read_vcoord)

tests/chgres_cube/data/global_hyblev.l28.txt

@@ -0,0 +1,30 @@
+     2    28
+        .000  1.00000000
+        .009   .98872586
+      11.635   .97440184
+      86.457   .95587239
+     292.577   .93174961
+     701.453   .90058087
+    1381.526   .86097487
+    2389.205   .81178485
+    3757.142   .75234710
+    5481.144   .68274682
+    7508.532   .60405491
+    9731.807   .51845667
+   11991.428   .42919536
+   14089.535   .34029321
+   15812.926   .25608430
+   16959.994   .18066704
+   17364.658   .11741761
+   16912.130   .06867500
+   15613.564   .03495010
+   13671.427   .01432627
+   11343.654   .00393276
+    8913.767   .00037868
+    6678.608   .00000000
+    4844.036   .00000000
+    3376.516   .00000000
+    2210.979   .00000000
+    1290.533   .00000000
+     566.898   .00000000
+        .000   .00000000

tests/chgres_cube/ftst_read_vcoord.F90

@@ -0,0 +1,81 @@
+ program vcoord
+
+! Test the 'read_vcoord_info' routine, which reads
+! the 'global_hyblev' files. These files contain
+! the definition of the model vertical hybrid levels.
+! The levels are defined by two coefficients 'ak'
+! and 'bk' as follows:
+!
+! pressure(level) = ak + (bk * surface pressure)
+!
+! The 'read_vcoord_info' routine returns the
+! number of vertical levels, the number of level
+! interfaces (# of levels plus 1), the number of 
+! level coordinates (two for 'ak' and 'bk') and
+! the 'ak' and 'bk' values. All are compared to
+! expected values. The sample 'global_hyblev'
+! file is set by variable "vcoord_file_target_grid'.
+!
+! @author George Gayno
+
+ use atmosphere, only : read_vcoord_info, &
+                        vcoord_target, &
+                        nvcoord_target, &
+                        lev_target, &
+                        levp1_target
+
+ use program_setup, only : vcoord_file_target_grid
+
+ implicit none
+
+ integer :: j
+
+ integer, parameter :: LEV_TARGET_EXPECTED=28    ! number of levels.
+ integer, parameter :: LEVP1_TARGET_EXPECTED=29  ! number of level interfaces.
+ integer, parameter :: NVCOORD_TARGET_EXPECTED=2 ! number of level coordinates.
+
+ real :: VCOORD_AK_EXPECTED(LEVP1_TARGET_EXPECTED) ! 'ak' values for each interface.
+ real :: VCOORD_BK_EXPECTED(LEVP1_TARGET_EXPECTED) ! 'bk' values for each interface.
+
+ data VCOORD_AK_EXPECTED /.000,    .009, 11.635,  &
+                           86.457, 292.577,  701.453, &
+                           1381.526, 2389.205, 3757.142, &
+                           5481.144, 7508.532,  9731.807, & 
+                           11991.428, 14089.535, 15812.926, &
+                           16959.994, 17364.658, 16912.130, & 
+                           15613.564, 13671.427, 11343.654, &
+                           8913.767, 6678.608, 4844.036, &
+                           3376.516, 2210.979,  1290.533, &
+                           566.898,  0.000/
+
+ data VCOORD_BK_EXPECTED /1.00000000, .98872586, .97440184, &
+                          .95587239,  .93174961, .90058087, &
+                          .86097487,  .81178485, .75234710, &
+                          .68274682,  .60405491, .51845667, &
+                          .42919536,  .34029321, .25608430, &
+                          .18066704,  .11741761, .06867500, &
+                          .03495010,  .01432627, .00393276, &
+                          .00037868,   0.0,       0.0, &
+                          0.0,         0.0,       0.0, &
+                          0.0,         0.0 /
+
+ print*,'Starting test of read_vcoord_info routine'
+
+ vcoord_file_target_grid="./data/global_hyblev.l28.txt"
+
+ call read_vcoord_info
+
+ if (lev_target /= LEV_TARGET_EXPECTED) stop 2
+ if (levp1_target /= LEVP1_TARGET_EXPECTED) stop 4
+ if (nvcoord_target /= NVCOORD_TARGET_EXPECTED) stop 6
+
+ do j = 1, levp1_target
+   if (vcoord_target(j,1) /= VCOORD_AK_EXPECTED(j)) stop 8
+   if (vcoord_target(j,2) /= VCOORD_BK_EXPECTED(j)) stop 10
+ enddo
+
+ print*,"OK"
+
+ print*,"SUCCESS!"
+
+ end program vcoord