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diff --git a/devtools/client/performance/test/unit/test_jit-model-02.js b/devtools/client/performance/test/unit/test_jit-model-02.js
new file mode 100644
index 000000000..19373e399
--- /dev/null
+++ b/devtools/client/performance/test/unit/test_jit-model-02.js
@@ -0,0 +1,149 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that JITOptimizations create OptimizationSites, and the underlying
+ * hasSuccessfulOutcome/isSuccessfulOutcome work as intended.
+ */
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function test() {
+  let {
+    JITOptimizations, hasSuccessfulOutcome, isSuccessfulOutcome, SUCCESSFUL_OUTCOMES
+  } = require("devtools/client/performance/modules/logic/jit");
+
+  let rawSites = [];
+  rawSites.push(gRawSite2);
+  rawSites.push(gRawSite2);
+  rawSites.push(gRawSite1);
+  rawSites.push(gRawSite1);
+  rawSites.push(gRawSite2);
+  rawSites.push(gRawSite3);
+
+  let jit = new JITOptimizations(rawSites, gStringTable.stringTable);
+  let sites = jit.optimizationSites;
+
+  let [first, second, third] = sites;
+
+  /* hasSuccessfulOutcome */
+  equal(hasSuccessfulOutcome(first), false,
+        "hasSuccessfulOutcome() returns expected (1)");
+  equal(hasSuccessfulOutcome(second), true,
+        "hasSuccessfulOutcome() returns expected (2)");
+  equal(hasSuccessfulOutcome(third), true,
+        "hasSuccessfulOutcome() returns expected (3)");
+
+  /* .data.attempts */
+  equal(first.data.attempts.length, 2,
+        "optSite.data.attempts has the correct amount of attempts (1)");
+  equal(second.data.attempts.length, 5,
+        "optSite.data.attempts has the correct amount of attempts (2)");
+  equal(third.data.attempts.length, 3,
+        "optSite.data.attempts has the correct amount of attempts (3)");
+
+  /* .data.types */
+  equal(first.data.types.length, 1,
+        "optSite.data.types has the correct amount of IonTypes (1)");
+  equal(second.data.types.length, 2,
+        "optSite.data.types has the correct amount of IonTypes (2)");
+  equal(third.data.types.length, 1,
+        "optSite.data.types has the correct amount of IonTypes (3)");
+
+  /* isSuccessfulOutcome */
+  ok(SUCCESSFUL_OUTCOMES.length, "Have some successful outcomes in SUCCESSFUL_OUTCOMES");
+  SUCCESSFUL_OUTCOMES.forEach(outcome =>
+    ok(isSuccessfulOutcome(outcome),
+      `${outcome} considered a successful outcome via isSuccessfulOutcome()`));
+});
+
+var gStringTable = new RecordingUtils.UniqueStrings();
+
+function uniqStr(s) {
+  return gStringTable.getOrAddStringIndex(s);
+}
+
+var gRawSite1 = {
+  line: 12,
+  column: 2,
+  types: [{
+    mirType: uniqStr("Object"),
+    site: uniqStr("A (http://foo/bar/bar:12)"),
+    typeset: [{
+      keyedBy: uniqStr("constructor"),
+      name: uniqStr("Foo"),
+      location: uniqStr("A (http://foo/bar/baz:12)")
+    }, {
+      keyedBy: uniqStr("constructor"),
+      location: uniqStr("A (http://foo/bar/baz:12)")
+    }]
+  }, {
+    mirType: uniqStr("Int32"),
+    site: uniqStr("A (http://foo/bar/bar:12)"),
+    typeset: [{
+      keyedBy: uniqStr("primitive"),
+      location: uniqStr("self-hosted")
+    }]
+  }],
+  attempts: {
+    schema: {
+      outcome: 0,
+      strategy: 1
+    },
+    data: [
+      [uniqStr("Failure1"), uniqStr("SomeGetter1")],
+      [uniqStr("Failure1"), uniqStr("SomeGetter1")],
+      [uniqStr("Failure1"), uniqStr("SomeGetter1")],
+      [uniqStr("Failure2"), uniqStr("SomeGetter2")],
+      [uniqStr("Inlined"), uniqStr("SomeGetter3")]
+    ]
+  }
+};
+
+var gRawSite2 = {
+  line: 34,
+  types: [{
+    mirType: uniqStr("Int32"),
+    site: uniqStr("Receiver")
+  }],
+  attempts: {
+    schema: {
+      outcome: 0,
+      strategy: 1
+    },
+    data: [
+      [uniqStr("Failure1"), uniqStr("SomeGetter1")],
+      [uniqStr("Failure2"), uniqStr("SomeGetter2")]
+    ]
+  }
+};
+
+var gRawSite3 = {
+  line: 78,
+  types: [{
+    mirType: uniqStr("Object"),
+    site: uniqStr("A (http://foo/bar/bar:12)"),
+    typeset: [{
+      keyedBy: uniqStr("constructor"),
+      name: uniqStr("Foo"),
+      location: uniqStr("A (http://foo/bar/baz:12)")
+    }, {
+      keyedBy: uniqStr("primitive"),
+      location: uniqStr("self-hosted")
+    }]
+  }],
+  attempts: {
+    schema: {
+      outcome: 0,
+      strategy: 1
+    },
+    data: [
+      [uniqStr("Failure1"), uniqStr("SomeGetter1")],
+      [uniqStr("Failure2"), uniqStr("SomeGetter2")],
+      [uniqStr("GenericSuccess"), uniqStr("SomeGetter3")]
+    ]
+  }
+};