fix(types): make secret reference fields optional in initProvider

[pujitha24]

Fixes #456

I have:

• Read and followed Upjet's contribution process.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Extended the table-driven TestBuild cases Sensitive_Fields and Sensitive_Fields_namespaced in pkg/types/builder_test.go to assert on the generated initProvider struct, not just forProvider. Confirmed via git stash on pkg/types/field.go alone that these assertions FAIL against the pre-fix code and PASS with the fix applied:

go test ./pkg/types/... -run TestBuild -v

Also ran, all passing:

go build ./...
go vet ./pkg/...
go test ./pkg/...

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AI assistance: this change was drafted with Claude Code.

[coderabbitai]

📝 Walkthrough

Walkthrough

Sensitive secret-reference fields now generate optional pointer types with omitempty. Builder tests now validate the corresponding InitProvider output for cluster-scoped and namespaced fields.

Changes

Sensitive field reference generation

Layer / File(s)	Summary
Optional sensitive field generation pkg/types/field.go	Sensitive fields always use pointer types and omitempty JSON tags, including required Terraform schema fields.
Builder InitProvider expectations pkg/types/builder_test.go	TestBuild now includes expected InitProvider types and optional secret-reference fields for cluster-scoped and namespaced resources.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested labels: backport release-1.11, backport release-1.10

Suggested reviewers: erhancagirici, sergenyalcin, ulucinar

🚥 Pre-merge checks | ✅ 7

✅ Passed checks (7 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is descriptive, matches the secret-reference change, and is 65 characters long, below the 72-character limit.
Description check	✅ Passed	The description explains the optional initProvider secret-reference fix, test coverage, and validation commands.
Linked Issues check	✅ Passed	The changes make initProvider secret references optional and add tests for sensitive and namespaced fields, satisfying issue #456.
Out of Scope Changes check	✅ Passed	The implementation and related test updates are limited to the secret-reference behavior described in issue #456.
Configuration Api Breaking Changes	✅ Passed	The pull request changes only pkg/types/field.go and pkg/types/builder_test.go; git diff shows no changes under pkg/config or its public API.
Generated Code Manual Edits	✅ Passed	The complete diff changes only pkg/types/builder_test.go and pkg/types/field.go; no path matches the zz_*.go generated-file pattern.
Template Breaking Changes	✅ Passed	The commit changes only pkg/types/builder_test.go and pkg/types/field.go; no pkg/controller/external*.go template or controller behavior changes are present.

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@pkg/types/builder_test.go`:
- Around line 871-875: Update the InitProvider assertion in the builder test to
fail when tc.want.initProvider is non-empty and g.InitProviderType is nil,
before calling Obj().String(). Preserve the existing cmp.Diff validation for
non-nil generated types.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: f3929ed1-373b-49ca-a673-8f500339c0b3

📥 Commits

Reviewing files that changed from the base of the PR and between 324a879 and 638c3cb.

📒 Files selected for processing (2)

• pkg/types/builder_test.go
• pkg/types/field.go

[coderabbitai]

🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win

Fail when the generated InitProvider type is missing.

If tc.want.initProvider is non-empty but g.InitProviderType is nil, this condition skips the assertion and the test passes. Check for nil and fail before calling Obj().String().

Proposed fix

-			if tc.want.initProvider != "" && g.InitProviderType != nil {
+			if tc.want.initProvider != "" {
+				if g.InitProviderType == nil {
+					t.Fatalf("Build(...): expected initProvider type, got nil")
+				}
 				if diff := cmp.Diff(tc.want.initProvider, g.InitProviderType.Obj().String()); diff != "" {
 					t.Fatalf("Build(...): -want initProvider, +got initProvider: %s", diff)
 				}
 			}

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

	if tc.want.initProvider != "" && g.InitProviderType != nil {
	if diff := cmp.Diff(tc.want.initProvider, g.InitProviderType.Obj().String()); diff != "" {
	t.Fatalf("Build(...): -want initProvider, +got initProvider: %s", diff)
	}
	}
	if tc.want.initProvider != "" {
	if g.InitProviderType == nil {
	t.Fatalf("Build(...): expected initProvider type, got nil")
	}
	if diff := cmp.Diff(tc.want.initProvider, g.InitProviderType.Obj().String()); diff != "" {
	t.Fatalf("Build(...): -want initProvider, +got initProvider: %s", diff)
	}
	}

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@pkg/types/builder_test.go` around lines 871 - 875, Update the InitProvider
assertion in the builder test to fail when tc.want.initProvider is non-empty and
g.InitProviderType is nil, before calling Obj().String(). Preserve the existing
cmp.Diff validation for non-nil generated types.

[pujitha24]

This has been sitting green and rebased for a couple weeks now — happy to make any changes that would help move review along.