Add some tests

.github/workflows/CI.yml

@@ -20,7 +20,6 @@ jobs:
       matrix:
         version:
           - '1'
-          - '~1.11.0-0'
         os:
           - ubuntu-latest
           - macOS-latest

.github/workflows/Downstream.yml

@@ -48,6 +48,9 @@ jobs:
             @info "Not compatible with this release. No problem." exception=err
             exit(0)  # Exit immediately, as a success
           end
+        env:
+          RETESTITEMS_NWORKERS: 4
+          RETESTITEMS_NWORKER_THREADS: 2
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v3
         with:

test/basictests.jl

@@ -24,6 +24,11 @@ function matmul!!(y, x, z)
     return y
 end
 
+function get_similar(x)
+    @bb z = similar(x)
+    return z
+end
+
 @testset "copyto!" begin
     x = [1.0, 1.0]
     y = [0.0, 0.0]
@@ -88,3 +93,15 @@ end
     @test matmul!!(y, x, z) == @SVector[2.0, 2.0]
     @test y == @SVector[0.0, 0.0]
 end
+
+@testset "similar" begin
+    x = [1.0, 1.0]
+    z = get_similar(x)
+
+    @test_nowarn z[1]
+
+    x = BigFloat[1.0, 1.0]
+    z = get_similar(x)
+
+    @test_nowarn z[1]  # Without correct similar this would throw UndefRefError
+end