version number in dedicated function, conditional tests

src/util.jl

@@ -1,5 +1,18 @@
+
 function camel_case_to_snake_case(x::AbstractString)
     # from https://stackoverflow.com/questions/1175208/elegant-python-function-to-convert-camelcase-to-snake-case
     s1 = replace(x, r"(.)([A-Z][a-z]+)" => s"\1_\2")
     return lowercase(replace(s1, r"([a-z0-9])([A-Z])" => s"\1_\2"))
 end
+
+"""
+    SCIP_versionnumber() -> VersionNumber
+
+Current version of the SCIP binary
+"""
+function SCIP_versionnumber()
+    major = SCIPmajorVersion()
+    minor = SCIPminorVersion()
+    patch = SCIPtechVersion()
+    return VersionNumber(major, minor, patch)
+end

test/runtests.jl

@@ -16,14 +16,16 @@ include("conshdlr_support.jl")
     include("conshdlr.jl")
 end
 
-include("sepa_support.jl")
-
-@testset "separators" begin
-    include("sepa.jl")
-end
-
-@testset "cut callbacks" begin
-    include("cutcallback.jl")
+if SCIP.SCIP_versionnumber() >= v"7"
+    include("sepa_support.jl")
+    @testset "separators" begin
+        include("sepa.jl")
+    end
+    @testset "cut callbacks" begin
+        include("cutcallback.jl")
+    end
+else
+    @info "Separation and callbacks not tested for SCIP versions below 7"
 end
 
 @testset "MathOptInterface tests (bridged)" begin
@@ -46,6 +48,4 @@ end
     include("MOI_nonlinear_exprs.jl")
 end
 
-@testset "constraint handlers (with MOI)" begin
-    include("MOI_conshdlr.jl")
-end
+include("MOI_conshdlr.jl")