test(01-02): add failing tests for provider schema validation and registry

pkg/engine/scanner_test.go

@@ -0,0 +1,23 @@
+package engine_test
+
+import (
+	"testing"
+)
+
+// TestShannonEntropy verifies the entropy function returns expected values.
+// Stub: will be implemented when entropy.go exists (Plan 04).
+func TestShannonEntropy(t *testing.T) {
+	t.Skip("stub — implement after entropy.go exists")
+}
+
+// TestKeywordPreFilter verifies Aho-Corasick pre-filter rejects files without keywords.
+// Stub: will be implemented when filter.go exists (Plan 04).
+func TestKeywordPreFilter(t *testing.T) {
+	t.Skip("stub — implement after filter.go exists")
+}
+
+// TestScannerPipeline verifies end-to-end scan of testdata returns expected findings.
+// Stub: will be implemented when engine.go exists (Plan 04).
+func TestScannerPipeline(t *testing.T) {
+	t.Skip("stub — implement after engine.go exists")
+}