feat(to-string): add support for floats

libs/as-sdk-integration-tests/assembly/console.ts

@@ -19,3 +19,20 @@ export class TestLogByteArray extends OracleProgram {
 		Process.exit(0);
 	}
 }
+
+export class TestLogNull extends OracleProgram {
+	execution(): void {
+		Console.log(null);
+
+		Process.exit(0);
+	}
+}
+
+export class TestLogFloat extends OracleProgram {
+	execution(): void {
+		const float: f32 = 0.32;
+		Console.log(float);
+
+		Process.exit(0);
+	}
+}

libs/as-sdk-integration-tests/assembly/index.ts

@@ -9,7 +9,12 @@ import {
 	TestBytesToNumber,
 	TestNumberToBytes,
 } from "./bytes";
-import { TestLogBuffer, TestLogByteArray } from "./console";
+import {
+	TestLogBuffer,
+	TestLogByteArray,
+	TestLogFloat,
+	TestLogNull,
+} from "./console";
 import {
 	TestKeccak256,
 	TestSecp256k1VerifyInvalid,
@@ -82,6 +87,10 @@ if (args === "testHttpRejection") {
 	new TestBytesToNumber().run();
 } else if (args === "testNumberToBytes") {
 	new TestNumberToBytes().run();
+} else if (args === "testLogNull") {
+	new TestLogNull().run();
+} else if (args === "testLogFloat") {
+	new TestLogFloat().run();
 }
 
 Process.error(Bytes.fromUtf8String("No argument given"));

libs/as-sdk-integration-tests/src/console.test.ts

@@ -24,4 +24,16 @@ describe("console", () => {
 
 		expect(result.stdout).toEqual("TypedArray(0x54797065644172726179)\n");
 	});
+
+	it("should print a float value", async () => {
+		const result = await executeDrWasm(wasmBinary, Buffer.from("testLogFloat"));
+
+		expect(result.stdout).toEqual("0.3199999928474426\n");
+	});
+
+	it("should print a null value", async () => {
+		const result = await executeDrWasm(wasmBinary, Buffer.from("testLogNull"));
+
+		expect(result.stdout).toEqual("null\n");
+	});
 });

libs/as-sdk/assembly/string-utils.ts

@@ -12,7 +12,7 @@ export interface ToString {
  * @returns
  */
 export function toString<T = string>(message: T): string {
-	if (message === null) {
+	if (!isFloat(message) && message === null) {
 		return "null";
 	}