Fix test assertion line splits

Fix unnecessarily split test assertions in default_algs.jl and basictests.jl
following Catalyst.jl PR #1306 guidelines for improved readability.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: claude

test/basictests.jl

@@ -507,10 +507,8 @@ end
             prob3 = LinearProblem(op1, b1; u0 = x1)
             prob4 = LinearProblem(op2, b2; u0 = x2)
 
-            @test LinearSolve.defaultalg(op1, x1).alg ===
-                  LinearSolve.DefaultAlgorithmChoice.DirectLdiv!
-            @test LinearSolve.defaultalg(op2, x2).alg ===
-                  LinearSolve.DefaultAlgorithmChoice.DirectLdiv!
+            @test LinearSolve.defaultalg(op1, x1).alg === LinearSolve.DefaultAlgorithmChoice.DirectLdiv!
+            @test LinearSolve.defaultalg(op2, x2).alg === LinearSolve.DefaultAlgorithmChoice.DirectLdiv!
             @test LinearSolve.defaultalg(op3, x1).alg ===
                   LinearSolve.DefaultAlgorithmChoice.KrylovJL_GMRES
             @test LinearSolve.defaultalg(op4, x2).alg ===

test/default_algs.jl

@@ -1,7 +1,6 @@
 using LinearSolve, RecursiveFactorization, LinearAlgebra, SparseArrays, Test
 
-@test LinearSolve.defaultalg(nothing, zeros(3)).alg ===
-      LinearSolve.DefaultAlgorithmChoice.GenericLUFactorization
+@test LinearSolve.defaultalg(nothing, zeros(3)).alg === LinearSolve.DefaultAlgorithmChoice.GenericLUFactorization
 prob = LinearProblem(rand(3, 3), rand(3))
 solve(prob)