Initial commit

frontend/taipy-gui/src/utils/formatConversion.ts

@@ -24,7 +24,7 @@ const re = {
  * This function formats a precision specifier for a number. It takes an optional precision and specifier string.
  * If no precision is provided, it defaults to 2. The function returns a string that represents the formatted precision.
  */
-const precisionFormat = (precision?: string, specifier?: string): string => {
+export const precisionFormat = (precision?: string, specifier?: string): string => {
     // Default to precision of 2 if not specified
     return "." + (precision?.slice(1) ?? "2") + specifier;
 }
@@ -33,7 +33,7 @@ const precisionFormat = (precision?: string, specifier?: string): string => {
  * This function parses a sprintf format string and returns an array of strings and objects. Each object has a single
  * key, 'placeholder', that contains the placeholder string.
  */
-const sprintfParse = (fmt?: string): (string | { placeholder: string; })[] => {
+export const sprintfParse = (fmt?: string): (string | { placeholder: string; })[] => {
     let _fmt = fmt;
     let match;
     const parseTree = [];

frontend/taipy-gui/src/utils/utils.spec.ts

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2021-2024 Avaiga Private Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+import { extractPrefix, extractSuffix, precisionFormat, sprintfParse, sprintfToD3Converter } from "./formatConversion";
+
+function extractSuffixWrapper(formatString: string): string {
+    let result = extractSuffix(formatString);
+    result = result.replace("[object Object]", "%d");
+    return result;
+}
+
+describe("format conversion", () => {
+    it("returns formatted precision with provided precision and specifier", () => {
+        expect(precisionFormat(".5", "f")).toBe(".5f");
+    });
+    it("returns formatted precision with default precision when none is provided", () => {
+        expect(precisionFormat(undefined, "f")).toBe(".2f");
+    });
+    it("returns empty string when no format string is provided", () => {
+        expect(sprintfToD3Converter()).toBe("");
+    });
+    it("should parse non-placeholder text", () => {
+        const result = sprintfParse("Hello, World!");
+        expect(result).toEqual(["Hello, World!"]);
+    });
+    it('should parse the "%%" escape sequence', () => {
+        const result = sprintfParse("%%");
+        expect(result).toEqual(["%"]);
+    });
+    it("should parse placeholders", () => {
+        const result = sprintfParse("%d");
+        expect(result).toEqual([{ placeholder: "%d" }]);
+    });
+    it("should parse complex format strings", () => {
+        const result = sprintfParse("Hello, %s. You have %d new messages.");
+        expect(result).toEqual([
+            "Hello, ",
+            { placeholder: "%s" },
+            ". You have ",
+            { placeholder: "%d" },
+            " new messages.",
+        ]);
+    });
+    it("should extract placeholder value", () => {
+        const result = sprintfToD3Converter("%d");
+        expect(result).toBe("d");
+    });
+    it("should extract prefix from format string", () => {
+        const result = extractPrefix("Hello, %s. You have %d new messages.");
+        expect(result).toBe("Hello, ");
+    });
+    it("should extract suffix from format string", () => {
+        const result = extractSuffixWrapper("Hello, %s. You have %d new messages.");
+        expect(result).toBe(". You have %d new messages.");
+    });
+    it("should return 'b' for '%b'", () => {
+        expect(sprintfToD3Converter("%b")).toBe("b");
+    });
+    it("should return 'e' for '%e'", () => {
+        expect(sprintfToD3Converter("%e")).toBe("e");
+    });
+
+    it("should return 'o' for '%o'", () => {
+        expect(sprintfToD3Converter("%o")).toBe("o");
+    });
+    it("should return 'x' for '%x'", () => {
+        expect(sprintfToD3Converter("%x")).toBe("x");
+    });
+    it("should return 'X' for '%X'", () => {
+        expect(sprintfToD3Converter("%X")).toBe("X");
+    });
+    it("should return 'd' for '%i'", () => {
+        expect(sprintfToD3Converter("%i")).toBe("d");
+    });
+    it("should return '.2f' for '%f'", () => {
+        expect(sprintfToD3Converter("%f")).toBe(".2f");
+    });
+    it("should return '.2g' for '%g'", () => {
+        expect(sprintfToD3Converter("%g")).toBe(".2g");
+    });
+    it("should return '(' for '%u'", () => {
+        expect(sprintfToD3Converter("%u")).toBe("(");
+    });
+});