test: verify that storing strings with characters that are too long f…

…or var/char throws

ensure that we will fail loudly when an attempt is made to store a string that cannot be
converted to the underlying type because it has too-long characters

Tests typeorm#7933

test/github-issues/7932/issue-7932.ts

@@ -33,6 +33,16 @@ describe("github issues > #7932  non-ascii characters assigned to var/char colum
         expect(savedEntity?.fixedLengthContent).to.be.equal(entity.fixedLengthContent);
     })));
 
+    it("should throw an error if characters in a string are too long to store", () => Promise.all(connections.map(async connection => {
+        const repo = connection.getRepository(Example);
+
+        const entity = new Example();
+        entity.content = '💖';
+        entity.fixedLengthContent = '🏍';
+
+        expect(repo.save(entity)).itself.eventually.be.rejectedWith();
+    })));
+
     it("should not change char or varchar column types to nchar or nvarchar", () => Promise.all(connections.map(async connection => {
         const repo = connection.getRepository(Example);