tests

internal/video/pattern_test.go

@@ -0,0 +1,47 @@
+package video
+
+import "testing"
+
+func TestPatterns(t *testing.T) {
+	got := Patterns()
+	if len(got) == 0 {
+		t.Fatal("Patterns returned no video patterns")
+	}
+
+	seen := make(map[string]struct{}, len(got))
+	for i, pattern := range got {
+		if pattern.Name == "" {
+			t.Fatalf("pattern %d has an empty name", i)
+		}
+		if pattern.Description == "" {
+			t.Fatalf("pattern %q has an empty description", pattern.Name)
+		}
+		if !HasPattern(pattern.Name) {
+			t.Fatalf("Patterns returned %q, but HasPattern rejected it", pattern.Name)
+		}
+		if _, exists := seen[pattern.Name]; exists {
+			t.Fatalf("duplicate pattern name %q", pattern.Name)
+		}
+		seen[pattern.Name] = struct{}{}
+		if i > 0 && got[i-1].Name >= pattern.Name {
+			t.Fatalf("patterns are not sorted: %q appears before %q", got[i-1].Name, pattern.Name)
+		}
+	}
+}
+
+func TestHasPatternRejectsUnknownName(t *testing.T) {
+	if HasPattern("not-a-pattern") {
+		t.Fatal("HasPattern accepted an unknown pattern")
+	}
+}
+
+func TestPatternRegistryKeysMatchNames(t *testing.T) {
+	for name, pattern := range patterns {
+		if pattern.Name != name {
+			t.Errorf("pattern map key %q does not match pattern name %q", name, pattern.Name)
+		}
+		if pattern.kernelPath == "" {
+			t.Errorf("pattern %q has an empty kernel path", name)
+		}
+	}
+}