From adee580f186d7f1cc5d5405792d6b0c13076f0a2 Mon Sep 17 00:00:00 2001
From: xyc <jc_xiong@hotmail.com>
Date: 星期四, 08 十月 2026 14:29:41 +0800
Subject: [PATCH] fix(holiday): 铁路客运量走势图10月3日标签上移避免遮挡
---
traffic-audit-server/src/test/java/com/trafficaudit/holiday/service/HolidayTrendChartServiceTest.java | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/traffic-audit-server/src/test/java/com/trafficaudit/holiday/service/HolidayTrendChartServiceTest.java b/traffic-audit-server/src/test/java/com/trafficaudit/holiday/service/HolidayTrendChartServiceTest.java
index 24bffda..90db24d 100644
--- a/traffic-audit-server/src/test/java/com/trafficaudit/holiday/service/HolidayTrendChartServiceTest.java
+++ b/traffic-audit-server/src/test/java/com/trafficaudit/holiday/service/HolidayTrendChartServiceTest.java
@@ -138,6 +138,64 @@
"custom day labels should change the rendered axis");
}
+ @Test
+ void pinsRequestedLineLabelToFixedAnchor() throws Exception {
+ HolidayTrendChartService service = new HolidayTrendChartService();
+ HolidayTrendChartService.ChartSeries series = new HolidayTrendChartService.ChartSeries();
+ series.setName("2026\u5e74");
+ series.setValues(java.util.Collections.singletonList(new BigDecimal("72.4")));
+ java.util.List<HolidayTrendChartService.ChartSeries> single =
+ java.util.Collections.singletonList(series);
+
+ byte[] plain = service.lineChart("\u4e07\u4eba\u6b21", single, false, 2, 1100, 590);
+ byte[] emptyOverrides = service.lineChart("\u4e07\u4eba\u6b21", single, false, 2,
+ HolidayTrendChartService.DAY_LABELS, 1100, 590,
+ java.util.Collections.emptyList());
+ assertArrayEquals(plain, emptyOverrides,
+ "an empty override list must keep the automatic placement");
+
+ byte[] unmatched = service.lineChart("\u4e07\u4eba\u6b21", single, false, 2,
+ HolidayTrendChartService.DAY_LABELS, 1100, 590,
+ java.util.Collections.singletonList(new HolidayTrendChartService.LineLabelOverride(
+ 0, 7, HolidayTrendChartService.LineLabelAnchor.ABOVE)));
+ assertArrayEquals(plain, unmatched,
+ "an override for a label that does not exist must not change rendering");
+
+ byte[] above = service.lineChart("\u4e07\u4eba\u6b21", single, false, 2,
+ HolidayTrendChartService.DAY_LABELS, 1100, 590,
+ java.util.Collections.singletonList(new HolidayTrendChartService.LineLabelOverride(
+ 0, 0, HolidayTrendChartService.LineLabelAnchor.ABOVE)));
+ byte[] below = service.lineChart("\u4e07\u4eba\u6b21", single, false, 2,
+ HolidayTrendChartService.DAY_LABELS, 1100, 590,
+ java.util.Collections.singletonList(new HolidayTrendChartService.LineLabelOverride(
+ 0, 0, HolidayTrendChartService.LineLabelAnchor.BELOW)));
+
+ assertPng(above);
+ assertPng(below);
+ assertFalse(java.util.Arrays.equals(above, below),
+ "ABOVE and BELOW anchors must render differently");
+ assertTrue(meanSeriesColorY(above) < meanSeriesColorY(below),
+ "the ABOVE anchor must place the label higher than the BELOW anchor");
+ }
+
+ private double meanSeriesColorY(byte[] data) throws Exception {
+ BufferedImage image = ImageIO.read(new ByteArrayInputStream(data));
+ assertNotNull(image);
+ int target = 0xC0504D;
+ long count = 0;
+ long sum = 0;
+ for (int y = 0; y < image.getHeight() - 60; y++) {
+ for (int x = 0; x < image.getWidth(); x++) {
+ if ((image.getRGB(x, y) & 0xFFFFFF) == target) {
+ count++;
+ sum += y;
+ }
+ }
+ }
+ assertTrue(count > 0, "expected series-coloured pixels for the item label");
+ return (double) sum / count;
+ }
+
private void assertNoLargeLightGrayBackground(byte[] data) throws Exception {
BufferedImage image = ImageIO.read(new ByteArrayInputStream(data));
int matches = 0;
--
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