[Bridges] fix ConstraintDualStart for Constraint.SplitIntervalBridge (#…

…2275)

src/Bridges/Constraint/bridges/interval.jl

@@ -287,12 +287,12 @@ function _split_dual_start(value)
     end
 end
 
-function _split_dual_start(value::Vector)
-    lower = similar(value)
-    upper = similar(value)
+function _split_dual_start(value::Vector{T}) where {T}
+    lower, upper = similar(value), similar(value)
     for i in eachindex(value)
         lower[i], upper[i] = _split_dual_start(value[i])
     end
+    return lower, upper
 end
 
 function MOI.set(

test/Bridges/Constraint/interval.jl

@@ -471,6 +471,34 @@ function test_runtests()
     return
 end
 
+function test_runtests_vector()
+    MOI.Bridges.runtests(
+        MOI.Bridges.Constraint.SplitIntervalBridge,
+        """
+        variables: x
+        [x] in Zeros(1)
+        """,
+        """
+        variables: x
+        [x] in Nonnegatives(1)
+        [x] in Nonpositives(1)
+        """,
+    )
+    MOI.Bridges.runtests(
+        MOI.Bridges.Constraint.SplitIntervalBridge,
+        """
+        variables: x, y
+        [1.0 * x + 2.0, x + y] in Zeros(2)
+        """,
+        """
+        variables: x, y
+        [1.0 * x + 2.0, x + y] in Nonnegatives(2)
+        [1.0 * x + 2.0, x + y] in Nonpositives(2)
+        """,
+    )
+    return
+end
+
 end  # module
 
 TestConstraintSplitInterval.runtests()