Added more tests.

source/handy_http_transport/helpers.d

@@ -11,7 +11,7 @@ import streams;
  * Returns: The string that was read, or a stream error.
  */
 Either!(string, "value", StreamError, "error") consumeUntil(S)(
-    S inputStream,
+    ref S inputStream,
     string target
 ) if (isByteInputStream!S) {
     ubyte[1024] buffer;
@@ -61,13 +61,22 @@ ptrdiff_t indexOf(string s, char c, size_t offset = 0) {
 string stripSpaces(string s) {
     if (s.length == 0) return s;
     ptrdiff_t startIdx = 0;
-    while (s[startIdx] == ' ' && startIdx < s.length) startIdx++;
+    while (startIdx < s.length && s[startIdx] == ' ') startIdx++;
     s = s[startIdx .. $];
+    if (s.length == 0) return "";
     ptrdiff_t endIdx = s.length - 1;
     while (s[endIdx] == ' ' && endIdx >= 0) endIdx--;
     return s[0 .. endIdx + 1];
 }
 
+unittest {
+    assert(stripSpaces("") == "");
+    assert(stripSpaces("    ") == "");
+    assert(stripSpaces("test") == "test");
+    assert(stripSpaces("  test") == "test");
+    assert(stripSpaces("  test string   ") == "test string");
+}
+
 /**
  * Helper function to append an unsigned integer value to a char buffer. It is
  * assumed that there's enough space to write the value.

source/handy_http_transport/http1/transport.d

@@ -92,10 +92,45 @@ void handleClient(Socket clientSocket, HttpRequestHandler requestHandler) {
     } catch (Exception e) {
         import std.stdio;
         stderr.writeln("Exception thrown while handling request: " ~ e.msg);
+    } catch (Throwable t) {
+        import std.stdio;
+        stderr.writeln("Throwable error while handling request: " ~ t.msg);
+        throw t;
     }
     inputStream.closeStream();
 }
 
+// Test case where we use a local socket pair to test the full handleClient
+// workflow from the HttpRequestHandler's point of view.
+unittest {
+    Socket[2] sockets = socketPair();
+    Socket clientSocket = sockets[0];
+    Socket serverSocket = sockets[1];
+    const requestContent =
+        "POST /data HTTP/1.1\r\n" ~
+        "Content-Type: application/json\r\n" ~
+        "Content-Length: 22\r\n" ~
+        "\r\n" ~
+        "{\"x\": 5, \"flag\": true}";
+    clientSocket.send(cast(ubyte[]) requestContent);
+    
+    class TestHandler : HttpRequestHandler {
+        import std.conv;
+
+        void handle(ref ServerHttpRequest request, ref ServerHttpResponse response) {
+            assert(request.headers["Content-Type"] == ["application/json"]);
+            assert("Content-Length" in request.headers && request.headers["Content-Length"].length > 0);
+            ulong contentLength = request.headers["Content-Length"][0].to!ulong;
+            assert(contentLength == 22);
+            ubyte[22] bodyBuffer;
+            auto readResult = request.inputStream.readFromStream(bodyBuffer);
+            assert(readResult.hasCount && readResult.count == 22);
+            assert(cast(string) bodyBuffer == "{\"x\": 5, \"flag\": true}");
+        }
+    }
+    handleClient(serverSocket, new TestHandler());
+}
+
 /**
  * Gets a ClientAddress value from a socket's address information.
  * Params:
@@ -171,6 +206,45 @@ HttpRequestParseResult readHttpRequest(S)(S inputStream, in ClientAddress addr)
     ));
 }
 
+unittest {
+    import streams;
+
+    auto makeStream(string text) {
+        return arrayInputStreamFor(cast(ubyte[]) text);
+    }
+
+    // Basic HTTP request.
+    ArrayInputStream!ubyte s1 = makeStream(
+        "GET /test?x=5 HTTP/1.1\r\n" ~
+        "Accept: text/plain\r\n" ~
+        "\r\n"
+    );
+    auto r1 = readHttpRequest(&s1, ClientAddress.unknown());
+    assert(r1.hasRequest);
+    assert(r1.request.httpVersion == HttpVersion.V1);
+    assert(r1.request.method == HttpMethod.GET);
+    assert(r1.request.url == "/test?x=5");
+    const r1ExpectedHeaders = ["Accept": ["text/plain"]];
+    assert(r1.request.headers == r1ExpectedHeaders);
+    assert(r1.request.clientAddress == ClientAddress.unknown());
+
+    // POST request with body. Test that the body is read correctly.
+    ArrayInputStream!ubyte s2 = makeStream(
+        "POST /data HTTP/1.1\r\n" ~
+        "Content-Type: text/plain\r\n" ~
+        "Content-Length: 12\r\n" ~
+        "\r\n" ~
+        "Hello world!"
+    );
+    auto r2 = readHttpRequest(&s2, ClientAddress.unknown());
+    assert(r2.hasRequest);
+    assert(r2.request.method == HttpMethod.POST);
+    ubyte[12] r2BodyBuffer;
+    StreamResult r2BodyReadResult = s2.readFromStream(r2BodyBuffer);
+    assert(r2BodyReadResult.count == 12);
+    assert(cast(string) r2BodyBuffer == "Hello world!");
+}
+
 /**
  * Parses HTTP headers from an input stream, and returns them as an associative
  * array mapping header names to their list of values.
@@ -201,15 +275,36 @@ Either!(string[][string], "headers", StreamError, "error") parseHeaders(S)(S inp
     return Either!(string[][string], "headers", StreamError, "error")(headers);
 }
 
-// unittest {
-//     class TestHandler : HttpRequestHandler {
-//         void handle(ref ServerHttpRequest request, ref ServerHttpResponse response) {
-//             response.status = HttpStatus.OK;
-//             response.headers.add("Content-Type", "application/json");
-//             response.outputStream.writeToStream(cast(ubyte[]) "{\"a\": 1}");
-//         }
-//     }
+unittest {
+    import streams;
 
-//     HttpTransport tp = new Http1Transport(new TestHandler(), 8080);
-//     tp.start();
-// }
+    auto makeStream(string text) {
+        return arrayInputStreamFor(cast(ubyte[]) text);
+    }
+
+    // Basic valid headers.
+    auto r1 = parseHeaders(makeStream("Content-Type: application/json\r\n\r\n"));
+    assert(r1.hasHeaders);
+    assert("Content-Type" in r1.headers);
+    assert(r1.headers["Content-Type"] == ["application/json"]);
+
+    // Multiple headers.
+    auto r2 = parseHeaders(makeStream("Accept: text, json, image\r\nContent-Length: 1234\r\n\r\n"));
+    assert(r2.hasHeaders);
+    assert("Accept" in r2.headers);
+    assert(r2.headers["Accept"] == ["text, json, image"]);
+    assert(r2.headers["Content-Length"] == ["1234"]);
+
+    // Basic invalid header string.
+    auto r3 = parseHeaders(makeStream("Invalid headers"));
+    assert(r3.hasError);
+    
+    // No trailing \r\n
+    auto r4 = parseHeaders(makeStream("Content-Type: application/json"));
+    assert(r4.hasError);
+
+    // Empty headers.
+    auto r5 = parseHeaders(makeStream("\r\n"));
+    assert(r5.hasHeaders);
+    assert(r5.headers.length == 0);
+}