C内核流量计算方法优化，前端文件名称读取优化

frontend/tests/e2e/results-chart-windows.spec.ts

@@ -211,6 +211,114 @@ test.beforeEach(async ({ page }) => {
   }, chartWindowSnapshot);
 });
 
+for (const quantity of ["pressure", "absolute_pressure"]) {
+  for (const kind of ["single", "multi", "mixed"] as const) {
+    test(`${quantity} 的 ${kind} 图默认 Pa，绝压换算及单位持久化不改变原始数据`, async ({ page }) => {
+      await page.addInitScript(({ snapshot, pressureQuantity }) => {
+        const pressure = snapshot.result.variables.find(
+          (variable) => variable.key === "generic_sensor_1.pressure",
+        );
+        if (pressure) pressure.quantity = pressureQuantity;
+        window.sessionStorage.setItem(
+          "system-simulation-flow:latest-result",
+          JSON.stringify(snapshot),
+        );
+      }, { snapshot: chartWindowSnapshot, pressureQuantity: quantity });
+      await page.goto("/");
+      await openResults(page);
+
+      const pressureVariable = page
+        .locator(".results-variable-list button")
+        .filter({ hasText: "压力" })
+        .first();
+      await expect(pressureVariable.locator("small")).toHaveText("Pa");
+      const chartWindow = page.locator(
+        `.result-chart-window[data-chart-kind="${kind}"]`,
+      );
+      if (kind === "single") {
+        await pressureVariable.click();
+      } else {
+        await page.getByRole("button", {
+          name: kind === "multi" ? "新建同单位多曲线对比窗口" : "新建异单位上下对比窗口",
+          exact: true,
+        }).click();
+        if (kind === "mixed") {
+          await page.locator(".results-variable-list button")
+            .filter({ hasText: "数值" }).first().dragTo(chartWindow);
+        }
+        await pressureVariable.dragTo(chartWindow);
+      }
+      const chart = chartWindow.locator('svg[data-result-chart="true"]');
+      const unitSelect = chartWindow.getByRole("combobox", {
+        name: kind === "mixed"
+          ? "generic_sensor_1.pressure纵轴单位"
+          : kind === "multi" ? "多曲线纵轴单位" : "压力纵轴单位",
+        exact: true,
+      });
+      const showUnits = async () => {
+        if (kind === "mixed") {
+          await chartWindow.getByRole("button", {
+            name: "管理多曲线窗口中的曲线", exact: true,
+          }).click();
+        }
+      };
+      const readPressureRange = () => chart.evaluate((element) => {
+        const ranges = element.getAttribute("data-view-y-ranges");
+        return ranges
+          ? JSON.parse(ranges)["generic_sensor_1.pressure"] as number[]
+          : [
+              Number(element.getAttribute("data-view-y-min")),
+              Number(element.getAttribute("data-view-y-max")),
+            ];
+      });
+      await showUnits();
+      await expect(unitSelect).toHaveValue("Pa");
+      await expect(unitSelect.locator('option[value="barA"]')).toHaveCount(0);
+      await expect(chart.locator(".result-chart-unit")).toContainText(["Pa"]);
+      const pascalRange = await readPressureRange();
+      expect(pascalRange[0]).toBeCloseTo(98400, 6);
+      expect(pascalRange[1]).toBeCloseTo(121600, 6);
+
+      await unitSelect.selectOption("bar");
+      await expect(unitSelect).toHaveValue("bar");
+      const barRange = await readPressureRange();
+      expect(barRange[0]).toBeCloseTo(0.984, 6);
+      expect(barRange[1]).toBeCloseTo(1.216, 6);
+      if (kind === "multi") {
+        await expect(chartWindow.locator(".result-chart-window-title")).toContainText("bar");
+        await chartWindow.getByRole("button", {
+          name: "管理多曲线窗口中的曲线", exact: true,
+        }).click();
+        await expect(chartWindow.locator(".result-chart-multi-menu-label small")).toContainText("bar");
+      }
+
+      const storedPressure = await page.evaluate(() => {
+        const snapshot = JSON.parse(sessionStorage.getItem(
+          "system-simulation-flow:latest-result",
+        ) ?? "null");
+        return {
+          values: snapshot.result.series["generic_sensor_1.pressure"],
+          final: snapshot.result.final["generic_sensor_1.pressure"],
+          unit: snapshot.result.variables.find(
+            (variable: { key: string }) => variable.key === "generic_sensor_1.pressure",
+          ).unit,
+        };
+      });
+      expect(storedPressure).toEqual({
+        values: [100000, 110000, 120000], final: 120000, unit: "Pa",
+      });
+
+      await page.reload();
+      await openResults(page);
+      await showUnits();
+      await expect(unitSelect).toHaveValue("bar");
+      expect(await readPressureRange()).toEqual(barRange);
+      await unitSelect.selectOption("Pa");
+      expect(await readPressureRange()).toEqual(pascalRange);
+    });
+  }
+}
+
 test("机械状态事件力点不参与连续曲线纵轴，但原始数据与非力状态保持不变", async ({
   page,
 }) => {