diff --git a/extension/background.js b/extension/background.js
index ab15933..4de9b67 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -84,14 +84,13 @@ const BrowserState = { scriptsForTab: {} };
 
   chrome.debugger.onEvent.addListener((source, method, params) => {
     console.log(source, method, params);
-    if (method === "Page.") {
+    if (method === "Page.frameStartedLoading") {
       // we're gonna assume we're always plugged into both Page and Debugger.
       BrowserState.scriptsForTab[source.tabId] = [];
 
     } else if (method === "Debugger.scriptParsed") {
       BrowserState.scriptsForTab[source.tabId] = BrowserState.scriptsForTab[source.tabId] || [];
       BrowserState.scriptsForTab[source.tabId].push(params);
-      // FIXME: clear these out when page changes in tab (how?)
     }
   });
 })();
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..060a265
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,5 @@
+run-test: test
+	./test
+
+test: test.c
+	cc -o $@ $^
diff --git a/test/test b/test/test
new file mode 100755
index 0000000..36de26f
Binary files /dev/null and b/test/test differ
diff --git a/test.c b/test/test.c
similarity index 56%
rename from test.c
rename to test/test.c
index 76b353d..f715b44 100755
--- a/test.c
+++ b/test/test.c
@@ -5,6 +5,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
 
 #include <unistd.h>
 #include <assert.h>
@@ -24,20 +25,20 @@ char* expand(char* phrase) { // expand path with wildcard
 
 // integration tests
 int main() {
-    assert(system("node extension/background.js --unhandled-rejections=strict") == 0); // run quick local JS tests
+    assert(system("node ../extension/background.js --unhandled-rejections=strict") == 0); // run quick local JS tests
 
     // reload the extension so we know it's the latest code.
-    system("echo reload > fs/mnt/runtime/reload"); // this may error, but it should still have effect
-    // FIXME: race here
-    sleep(4);
+    system("echo reload > ../fs/mnt/runtime/reload 2>/dev/null"); // this may error, but it should still have effect
+    // spin until the extension reloads.
+    struct stat st; while (stat("../fs/mnt/tabs", &st) != 0) {}
+
+    assert(file_contents_equal(expand("../fs/mnt/extensions/TabFS*/enabled"), "true"));
 
     // FIXME: synthesize some kind of web page
-    assert(system("echo about:blank > fs/mnt/tabs/create") == 0);
+    assert(system("echo about:blank > ../fs/mnt/tabs/create") == 0);
     // FIXME: race here
-    assert(file_contents_equal("fs/mnt/tabs/last-focused/url.txt", "about:blank"));
-    assert(system("echo remove > fs/mnt/tabs/last-focused/control") == 0);
-
-    assert(file_contents_equal(expand("fs/mnt/extensions/TabFS*/enabled"), "true"));
+    assert(file_contents_equal("../fs/mnt/tabs/last-focused/url.txt", "about:blank"));
+    assert(system("echo remove > ../fs/mnt/tabs/last-focused/control") == 0);
 
     assert(1); printf("Done!\n"); 
 }