feat(InstallContext): add strict_mode flag (#1055)

Also add some more ctx.fs methods.

3 files changed, 24 insertions, 5 deletions

diff --git a/tests/helpers/lua/test_helpers.lua b/tests/helpers/lua/test_helpers.lua
index 17ec5ae5..08a0e91b 100644
--- a/tests/helpers/lua/test_helpers.lua
+++ b/tests/helpers/lua/test_helpers.lua
@@ -43,10 +43,10 @@ end
 ---@param opts PackageInstallOpts?
 function InstallContextGenerator(handle, opts)
     local context = InstallContext.new(handle, opts or {})
-    context.spawn = setmetatable({}, {
-        __index = function(s, cmd)
-            s[cmd] = spy.new(mockx.just_runs())
-            return s[cmd]
+    context.spawn = setmetatable({ strict_mode = false }, {
+        __index = function(self, cmd)
+            self[cmd] = spy.new(mockx.just_runs())
+            return self[cmd]
         end,
     })
     return context
diff --git a/tests/mason-core/installer/context_spec.lua b/tests/mason-core/installer/context_spec.lua
index 0a5b7410..e09ebd52 100644
--- a/tests/mason-core/installer/context_spec.lua
+++ b/tests/mason-core/installer/context_spec.lua
@@ -105,7 +105,6 @@ cmd.exe /C echo %GREETING% %*]]
         stub(ctx.cwd, "get")
         ctx.cwd.get.returns "/tmp/placeholder"
         stub(ctx, "write_shell_exec_wrapper")
-        stub(ctx.spawn, "python")
 
         ctx:write_pyvenv_exec_wrapper("my-wrapper-script", "my-module")
 
diff --git a/tests/mason-core/installer/installer_spec.lua b/tests/mason-core/installer/installer_spec.lua
index 094129f9..66cdb89b 100644
--- a/tests/mason-core/installer/installer_spec.lua
+++ b/tests/mason-core/installer/installer_spec.lua
@@ -4,6 +4,7 @@ local stub = require "luassert.stub"
 local fs = require "mason-core.fs"
 local a = require "mason-core.async"
 local path = require "mason-core.path"
+local Result = require "mason-core.result"
 local installer = require "mason-core.installer"
 local InstallContext = require "mason-core.installer.context"
 
@@ -147,4 +148,23 @@ describe("installer", function()
                 .was_called_with(path.package_prefix "dummy/mason-debug.log", "Hello stdout!\nHello stderr!")
         end)
     )
+
+    it(
+        "should raise spawn errors in strict mode",
+        async_test(function()
+            local handle = InstallHandleGenerator "dummy"
+            stub(handle.package.spec, "install", function(ctx)
+                ctx.spawn.bash { "-c", "exit 42" }
+            end)
+            local result = installer.execute(handle, { debug = true })
+            assert.same(
+                Result.failure {
+                    exit_code = 42,
+                    signal = 0,
+                },
+                result
+            )
+            assert.equals("spawn: bash failed with exit code 42 and signal 0. ", tostring(result:err_or_nil()))
+        end)
+    )
 end)