[JS] Correctly format floating numbers when they're close to an integer (bug 1918115)

src/scripting_api/util.js

@@ -153,7 +153,12 @@ class Util extends PDFObject {
               ? Math.abs(arg - intPart).toFixed(nPrecision)
               : Math.abs(arg - intPart).toString();
           if (decPart.length > 2) {
-            decPart = `${decimalSep}${decPart.substring(2)}`;
+            if (/^1\.0+$/.test(decPart)) {
+              intPart += Math.sign(arg);
+              decPart = `${decimalSep}${decPart.split(".")[1]}`;
+            } else {
+              decPart = `${decimalSep}${decPart.substring(2)}`;
+            }
           } else {
             if (decPart === "1") {
               intPart += Math.sign(arg);

test/integration/scripting_spec.mjs

@@ -2468,4 +2468,32 @@ describe("Interaction", () => {
       );
     });
   });
+
+  describe("Correctly format numbers", () => {
+    let pages;
+
+    beforeAll(async () => {
+      pages = await loadAndWait("bug1918115.pdf", getSelector("33R"));
+    });
+
+    afterAll(async () => {
+      await closePages(pages);
+    });
+
+    it("must check that the computed value is correct", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page], i) => {
+          await waitForScripting(page);
+
+          const inputSelector = getSelector("33R");
+          await page.click(inputSelector);
+          await page.type(inputSelector, "7");
+          await page.click(getSelector("34R"));
+          await page.waitForFunction(
+            `${getQuerySelector("35R")}.value === "324,00"`
+          );
+        })
+      );
+    });
+  });
 });

test/pdfs/.gitignore

@@ -667,3 +667,4 @@
 !bug1708040.pdf
 !issue18694.pdf
 !issue18693.pdf
+!bug1918115.pdf