tests and refactor for ad geography

src/modules/geography/tests/unit/coordinate.spec.ts

@@ -0,0 +1,8 @@
+import { Coordinate } from '../../domain/entities/coordinate';
+
+describe('Coordinate entity', () => {
+  it('should be defined', () => {
+    const coordinate: Coordinate = new Coordinate(6, 47);
+    expect(coordinate).toBeDefined();
+  });
+});

src/modules/geography/tests/unit/postgres-direction-encoder.spec.ts

@@ -0,0 +1,30 @@
+import { PostgresDirectionEncoder } from '../../adapters/secondaries/postgres-direction-encoder';
+import { Coordinate } from '../../domain/entities/coordinate';
+
+describe('Postgres direction encoder', () => {
+  it('should be defined', () => {
+    const postgresDirectionEncoder: PostgresDirectionEncoder =
+      new PostgresDirectionEncoder();
+    expect(postgresDirectionEncoder).toBeDefined();
+  });
+  it('should encode coordinates to a postgres direction', () => {
+    const postgresDirectionEncoder: PostgresDirectionEncoder =
+      new PostgresDirectionEncoder();
+    const coordinates: Coordinate[] = [
+      {
+        lon: 6,
+        lat: 47,
+      },
+      {
+        lon: 6.1,
+        lat: 47.1,
+      },
+      {
+        lon: 6.2,
+        lat: 47.2,
+      },
+    ];
+    const direction = postgresDirectionEncoder.encode(coordinates);
+    expect(direction).toBe("'LINESTRING(6 47,6.1 47.1,6.2 47.2)'");
+  });
+});