Replace Cassette mocking with SimpleMock

FYI: CI should fail until SimpleMock is finished being registered.

Project.toml

@@ -17,11 +17,11 @@ UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 julia = "1"
 
 [extras]
-Cassette = "7057c7e9-c182-5462-911a-8362d720325c"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ReferenceTests = "324d217c-45ce-50fc-942e-d289b448e8cf"
+SimpleMock = "a896ed2c-15a5-4479-b61d-a0e88e2a1d25"
 Suppressor = "fd094767-a336-5f1f-9728-57cf17d0bbfb"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Cassette", "Suppressor", "Random", "ReferenceTests", "Test"]
+test = ["Suppressor", "Random", "ReferenceTests", "SimpleMock", "Test"]

test/git.jl

@@ -1,9 +1,3 @@
-@context PTIsInstalled
-function Cassette.posthook(::PTIsInstalled, result::Dict, ::typeof(Pkg.installed))
-    result["PkgTemplates"] = v"1.2.3"
-    return result
-end
-
 @testset "Git repositories" begin
     @testset "Does not create Git repo" begin
         t = tpl(; disable_defaults=[Git])
@@ -44,11 +38,13 @@ end
     @testset "Adds version to commit message" begin
         # We're careful to avoid a Pkg.update as it triggers Cassette#130.
         t = tpl(; disable_defaults=[Tests], plugins=[Git()])
-        @overdub PTIsInstalled() with_pkg(t) do pkg
+        mock(CTX, Pkg.installed => () -> Dict("PkgTemplates" => v"1.2.3")) do _pi
-            pkg_dir = joinpath(t.dir, pkg)
+            with_pkg(t) do pkg
-            LibGit2.with(GitRepo(pkg_dir)) do repo
+                pkg_dir = joinpath(t.dir, pkg)
-                commit = GitCommit(repo, "HEAD")
+                LibGit2.with(GitRepo(pkg_dir)) do repo
-                @test occursin("PkgTemplates version: 1.2.3", LibGit2.message(commit))
+                    commit = GitCommit(repo, "HEAD")
+                    @test occursin("PkgTemplates version: 1.2.3", LibGit2.message(commit))
+                end
             end
         end
     end

test/runtests.jl

@@ -5,8 +5,8 @@ using Pkg: Pkg
 using Random: Random
 using Test: @test, @testset, @test_throws
 
-using Cassette: Cassette, @context, @overdub
 using ReferenceTests: @test_reference
+using SimpleMock: Mock, mock
 using Suppressor: @suppress
 
 using PkgTemplates
@@ -20,6 +20,7 @@ Random.seed!(1)
 tpl(; kwargs...) = Template(; user=USER, kwargs...)
 
 const PKG = Ref("A")
+const CTX = gensym()
 
 # Generate an unused package name.
 pkgname() = PKG[] *= "a"

test/template.jl

@@ -54,12 +54,6 @@
     end
 end
 
-@context ErrorOnRepoInit
-function Cassette.prehook(::ErrorOnRepoInit, ::typeof(LibGit2.init), pkg_dir)
-    @test isdir(pkg_dir)
-    error()
-end
-
 @testset "Package generation errors" begin
     mktempdir() do dir
         t = tpl(; dir=dirname(dir))
@@ -73,6 +67,8 @@ end
 
     t = tpl()
     pkg = pkgname()
-    @test_throws ErrorException @overdub ErrorOnRepoInit() @suppress t(pkg)
+    mock(CTX, LibGit2.init => dir -> (@test isdir(dir); error())) do _init
+        @test_throws ErrorException @suppress t(pkg)
+    end
     @test !isdir(joinpath(t.dir, pkg))
 end