Merge pull request #19 from marcelschurer/tests

Tests

test/preprocessing/preprocessing.jl

@@ -1 +1,2 @@
 include("geometries/geometries.jl")
+include("readvtk/readvtk.jl")

test/preprocessing/readvtk/vtk2trixi.jl

@@ -0,0 +1,31 @@
+@testset verbose=true "vtk2trixi" begin
+    @testset verbose=true "Functionality Check - 2D" begin
+
+        # 'InitialCondition'-Files
+        saved_ic = RectangularShape(0.1, (2, 2),
+                                    (0, 0), density=1.5,
+                                    velocity=(1.0, 2.0), pressure=1000.0)
+        filename = "is_write_out"
+        file = trixi2vtk(saved_ic; filename=filename)
+
+        loaded_ic = vtk2trixi(joinpath("out", filename * ".vtu"))
+
+        @test saved_ic.coordinates == loaded_ic.coordinates
+        @test saved_ic.velocity == loaded_ic.velocity
+        @test saved_ic.density == loaded_ic.density
+        @test saved_ic.pressure == loaded_ic.pressure
+        @test saved_ic.mass == loaded_ic.mass
+
+        # 'Fluidsystem'-Files
+        state_equation = StateEquationCole(; sound_speed=1.0, reference_density=1.0,
+                                           exponent=1, clip_negative_pressure=false)
+        fluid_system = WeaklyCompressibleSPHSystem(saved_ic,
+                                                   ContinuityDensity(), state_equation,
+                                                   WendlandC2Kernel{2}(), 0.2)
+
+        trixi2vtk(saved_ic.velocity, saved_ic.coordinates, 0.0, fluid_system, nothing;)
+        # trixi2vtk(sol.u[end], semi, 0.0, iter=1, output_directory="output",
+        #           prefix="solution")
+
+    end
+end