fix(material-date-fns-adapter): parse time string containing only hours (#31978)

close #31837

(cherry picked from commit b61d884)

Author: lekhmanrus

src/material-date-fns-adapter/adapter/date-fns-adapter.spec.ts

@@ -535,6 +535,15 @@ describe('DateFnsAdapter', () => {
     expect(adapter.getSeconds(result)).toBe(0);
   });
 
+  it('should parse a time string containing only hours', () => {
+    const result = adapter.parseTime('11', 'HH')!;
+    expect(result).toBeTruthy();
+    expect(adapter.isValid(result)).toBe(true);
+    expect(adapter.getHours(result)).toBe(11);
+    expect(adapter.getMinutes(result)).toBe(0);
+    expect(adapter.getSeconds(result)).toBe(0);
+  });
+
   it('should return an invalid date when parsing invalid time string', () => {
     expect(adapter.isValid(adapter.parseTime('abc', 'p')!)).toBe(false);
     expect(adapter.isValid(adapter.parseTime('123', 'p')!)).toBe(false);

src/material-date-fns-adapter/adapter/date-fns-adapter.ts

@@ -162,35 +162,7 @@ export class DateFnsAdapter extends DateAdapter<Date, Locale> {
   }
 
   parse(value: unknown, parseFormat: string | string[]): Date | null {
-    if (typeof value == 'string' && value.length > 0) {
-      const iso8601Date = parseISO(value);
-
-      if (this.isValid(iso8601Date)) {
-        return iso8601Date;
-      }
-
-      const formats = Array.isArray(parseFormat) ? parseFormat : [parseFormat];
-
-      if (!parseFormat.length) {
-        throw Error('Formats array must not be empty.');
-      }
-
-      for (const currentFormat of formats) {
-        const fromFormat = parse(value, currentFormat, new Date(), {locale: this.locale});
-
-        if (this.isValid(fromFormat)) {
-          return fromFormat;
-        }
-      }
-
-      return this.invalid();
-    } else if (typeof value === 'number') {
-      return new Date(value);
-    } else if (value instanceof Date) {
-      return this.clone(value);
-    }
-
-    return null;
+    return this._parse(value, parseFormat);
   }
 
   format(date: Date, displayFormat: string): string {
@@ -278,10 +250,48 @@ export class DateFnsAdapter extends DateAdapter<Date, Locale> {
   }
 
   override parseTime(value: unknown, parseFormat: string | string[]): Date | null {
-    return this.parse(value, parseFormat);
+    return this._parse(value, parseFormat, false);
   }
 
   override addSeconds(date: Date, amount: number): Date {
     return addSeconds(date, amount);
   }
+
+  private _parse(
+    value: unknown,
+    parseFormat: string | string[],
+    shouldTryParseIso = true,
+  ): Date | null {
+    if (typeof value == 'string' && value.length > 0) {
+      if (shouldTryParseIso) {
+        const iso8601Date = parseISO(value);
+
+        if (this.isValid(iso8601Date)) {
+          return iso8601Date;
+        }
+      }
+
+      const formats = Array.isArray(parseFormat) ? parseFormat : [parseFormat];
+
+      if (!parseFormat.length) {
+        throw Error('Formats array must not be empty.');
+      }
+
+      for (const currentFormat of formats) {
+        const fromFormat = parse(value, currentFormat, new Date(), {locale: this.locale});
+
+        if (this.isValid(fromFormat)) {
+          return fromFormat;
+        }
+      }
+
+      return this.invalid();
+    } else if (typeof value === 'number') {
+      return new Date(value);
+    } else if (value instanceof Date) {
+      return this.clone(value);
+    }
+
+    return null;
+  }
 }

src/material-luxon-adapter/adapter/luxon-date-adapter.spec.ts

@@ -633,6 +633,15 @@ describe('LuxonDateAdapter', () => {
     expect(adapter.getSeconds(result)).toBe(0);
   });
 
+  it('should parse a time string containing only hours', () => {
+    const result = adapter.parseTime('11', 'HH')!;
+    expect(result).toBeTruthy();
+    expect(adapter.isValid(result)).toBe(true);
+    expect(adapter.getHours(result)).toBe(11);
+    expect(adapter.getMinutes(result)).toBe(0);
+    expect(adapter.getSeconds(result)).toBe(0);
+  });
+
   it('should parse a time string with characters around the time', () => {
     adapter.setLocale('bg-BG');
     const result = adapter.parseTime('14:52 ч.', 't')!;

src/material-moment-adapter/adapter/moment-date-adapter.spec.ts

@@ -614,6 +614,15 @@ describe('MomentDateAdapter', () => {
     expect(adapter.getSeconds(result)).toBe(0);
   });
 
+  it('should parse a time string containing only hours', () => {
+    const result = adapter.parseTime('11', 'HH')!;
+    expect(result).toBeTruthy();
+    expect(adapter.isValid(result)).toBe(true);
+    expect(adapter.getHours(result)).toBe(11);
+    expect(adapter.getMinutes(result)).toBe(0);
+    expect(adapter.getSeconds(result)).toBe(0);
+  });
+
   it('should parse a time string with characters around the time', () => {
     adapter.setLocale('bg-BG');
     const result = adapter.parseTime('14:52 ч.', 'LT')!;