refactor(javascript): group domain semantics and contracts (#907)

src/domain/javascript/javascriptFeatureSeed.test.ts

@@ -0,0 +1,67 @@
+import { describe, expect, it } from "vitest";
+
+import { buildSyntheticJavaScriptApplicationGraph } from "./javascriptApplicationGraph.fixture.js";
+import type { JsonValue } from "../jsonValue.js";
+import { findApplicationFeatureSeeds } from "./javascriptFeatureSeed.js";
+
+describe("application feature seed property matching", () => {
+  it("finds strings after the former property count ceiling", () => {
+    const node = graphNodeWithProperties({
+      values: Array.from({ length: 513 }, (_, index) => `value-${index}`),
+    });
+
+    expect(
+      findApplicationFeatureSeeds([node], {
+        kind: "string",
+        value: "value-512",
+        match: "exact",
+        case_sensitive: true,
+      }),
+    ).toEqual([
+      {
+        node_id: node.node_id,
+        kind: node.kind,
+        basis: "property",
+        field: "observations[0].properties.values[512]",
+      },
+    ]);
+  });
+
+  it("finds strings deeper than the former traversal cutoff", () => {
+    const node = graphNodeWithProperties({
+      one: {
+        two: { three: { four: { five: { six: { seven: "deep-value" } } } } },
+      },
+    });
+
+    expect(
+      findApplicationFeatureSeeds([node], {
+        kind: "string",
+        value: "deep-value",
+        match: "exact",
+        case_sensitive: true,
+      }),
+    ).toEqual([
+      {
+        node_id: node.node_id,
+        kind: node.kind,
+        basis: "property",
+        field: "observations[0].properties.one.two.three.four.five.six.seven",
+      },
+    ]);
+  });
+});
+
+const graphNodeWithProperties = (
+  properties: Readonly<Record<string, JsonValue>>,
+) => {
+  const template = buildSyntheticJavaScriptApplicationGraph().nodes[0];
+  if (template === undefined) throw new Error("Expected fixture graph node");
+  return {
+    ...template,
+    observations: template.observations.map((observation) => ({
+      ...observation,
+      properties,
+    })),
+  };
+};