Use copy_test_packages in some places, and ensure that the copied tes…

…t package is user writable. This allows running the Pkg tests as part of Base.runtests of an installed Julia installation, where sources might be readonly.

test/extensions.jl

@@ -98,8 +98,7 @@ using UUIDs
     isolate(loaded_depot=false) do
         mktempdir() do dir
             Pkg.Registry.add("General")
-            path = joinpath(@__DIR__, "test_packages", "TestWeakDepProject")
-            cp(path, joinpath(dir, "TestWeakDepProject"))
+            copy_test_package("TestWeakDepProject")
             Pkg.activate(joinpath(dir, "TestWeakDepProject"))
             Pkg.resolve()
             @test Pkg.dependencies()[UUID("2ab3a3ac-af41-5b50-aa03-7779005ae688")].version == v"0.3.26"

test/new.jl

@@ -3224,8 +3224,7 @@ end
 temp_pkg_dir() do project_path
     @testset "test entryfile entries" begin
         mktempdir() do dir
-            path = abspath(joinpath(dirname(pathof(Pkg)), "../test", "test_packages", "ProjectPath"))
-            cp(path, joinpath(dir, "ProjectPath"))
+            copy_test_package("ProjectPath")
             cd(joinpath(dir, "ProjectPath")) do
                 with_current_env() do
                     Pkg.resolve()
@@ -3238,8 +3237,7 @@ temp_pkg_dir() do project_path
 end
 @testset "test resolve with tree hash" begin
     mktempdir() do dir
-        path = abspath(joinpath(@__DIR__, "../test", "test_packages", "ResolveWithRev"))
-        cp(path, joinpath(dir, "ResolveWithRev"))
+        copy_test_package("ResolveWithRev")
         cd(joinpath(dir, "ResolveWithRev")) do
             with_current_env() do
                 @test !isfile("Manifest.toml")

test/project_manifest.jl

@@ -7,8 +7,7 @@ using ..Utils
 temp_pkg_dir() do project_path
     @testset "test Project.toml manifest" begin
         mktempdir() do dir
-            path = abspath(joinpath(dirname(pathof(Pkg)), "../test", "test_packages", "monorepo"))
-            cp(path, joinpath(dir, "monorepo"))
+            copy_test_package(dir, "monorepo")
             cd(joinpath(dir, "monorepo")) do
                 with_current_env() do
                     Pkg.develop(path="packages/B")
@@ -60,4 +59,4 @@ temp_pkg_dir() do project_path
     end
 end
 
-end # module
+end # module

test/sources.jl

@@ -7,8 +7,7 @@ using ..Utils
 temp_pkg_dir() do project_path
     @testset "test Project.toml [sources]" begin
         mktempdir() do dir
-            path = abspath(joinpath(dirname(pathof(Pkg)), "../test", "test_packages", "WithSources"))
-            cp(path, joinpath(dir, "WithSources"))
+            copy_test_package("WithSources")
             cd(joinpath(dir, "WithSources")) do
                 with_current_env() do
                     Pkg.resolve()

test/utils.jl

@@ -270,9 +270,21 @@ function git_init_package(tmp, path)
     return pkgpath
 end
 
+function ensure_test_package_user_writable(dir)
+    for (root, _, files) in walkdir(dir)
+        chmod(root, filemode(root) | 0o200)
+
+        for file in files
+            filepath = joinpath(root, file)
+            chmod(filepath, filemode(filepath) | 0o200)
+        end
+    end
+end
+
 function copy_test_package(tmpdir::String, name::String; use_pkg=true)
     target = joinpath(tmpdir, name)
     cp(joinpath(@__DIR__, "test_packages", name), target)
+    ensure_test_package_user_writable(target)
     use_pkg || return target
 
     # The known Pkg UUID, and whatever UUID we're currently using for testing

test/workspaces.jl

@@ -148,8 +148,7 @@ end
 
 @testset "test resolve with tree hash" begin
     mktempdir() do dir
-        path = abspath(joinpath(@__DIR__, "../test", "test_packages", "WorkspaceTestInstantiate"))
-        cp(path, joinpath(dir, "WorkspaceTestInstantiate"))
+        copy_test_package("WorkspaceTestInstantiate")
         cd(joinpath(dir, "WorkspaceTestInstantiate")) do
             with_current_env() do
                 @test !isfile("Manifest.toml")