Combine loadGraph and runPagerank into one button (#759)

* StateTransitionMachine.loadGraph reports success

Step one towards #586. This will enable us to chain runPagerank after
loadGraph only if the load went through successfully.

Test plan: Unit tests included.

* Add StateTransitionMachine.loadGraphAndRunPagerank

This methods combines `loadGraph` and `runPagerank` into one method
which internally chains the two method. `runPagerank` is only called if
`loadGraph` was successful.

Progress on #586.

Test plan:
The new method has attached unit tests. I implemented the unit tests via
mocking, which seemed quite convenient as the method is basically a
wrapper for chaining two other function calls.

* Combine loadGraph and runPagerank into one button

Resolves #586. The new button is called "Analyze cred".

Test plan: Unit tests, also I tested it manually.

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
 ## [Unreleased]
+- Combine "load graph" and "run pagerank" into one button (#759)
 - Store GitHub data compressed at rest, reducing space usage by 6–8× (#750)
 - Improve weight sliders display (#736)
 - Separate bots from users in the UI (#720)

src/app/credExplorer/App.js

@@ -60,8 +60,6 @@ export function createApp(
     render() {
       const {localStore} = this.props;
       const {appState} = this.state;
-      const subType =
-        appState.type === "INITIALIZED" ? appState.substate.type : null;
       const loadingState =
         appState.type === "INITIALIZED" ? appState.substate.loading : null;
       let pagerankTable;
@@ -103,27 +101,18 @@ export function createApp(
               onChange={(repo) => this.stateTransitionMachine.setRepo(repo)}
             />
           </div>
-          <button
-            disabled={subType !== "READY_TO_LOAD_GRAPH"}
-            onClick={() =>
-              this.stateTransitionMachine.loadGraph(this.props.assets)
-            }
-          >
-            Load graph
-          </button>
           <button
             disabled={
-              !(
-                (subType === "READY_TO_RUN_PAGERANK" ||
-                  subType === "PAGERANK_EVALUATED") &&
-                loadingState !== "LOADING"
+              appState.type === "UNINITIALIZED" || loadingState === "LOADING"
+            }
+            onClick={() =>
+              this.stateTransitionMachine.loadGraphAndRunPagerank(
+                this.props.assets,
+                GithubPrefix.user
               )
             }
-            onClick={() =>
-              this.stateTransitionMachine.runPagerank(GithubPrefix.user)
-            }
           >
-            Run PageRank
+            Analyze cred
           </button>
           <WeightConfig
             onChange={(ee) => this.stateTransitionMachine.setEdgeEvaluator(ee)}

src/app/credExplorer/App.test.js

@@ -52,6 +52,7 @@ describe("app/credExplorer/App", () => {
       setEdgeEvaluator,
       loadGraph,
       runPagerank,
+      loadGraphAndRunPagerank,
       localStore,
     };
   }
@@ -147,40 +148,21 @@ describe("app/credExplorer/App", () => {
       });
     }
 
-    function testGraphButton(stateFn, {disabled}) {
+    function testAnalyzeCredButton(stateFn, {disabled}) {
       const adjective = disabled ? "disabled" : "working";
-      it(`has a ${adjective} load graph button`, () => {
-        const {el, loadGraph, setState} = example();
+      it(`has a ${adjective} analyze cred button`, () => {
+        const {el, loadGraphAndRunPagerank, setState} = example();
         setState(stateFn());
         el.update();
         const button = el.findWhere(
-          (b) => b.text() === "Load graph" && b.is("button")
+          (b) => b.text() === "Analyze cred" && b.is("button")
         );
         if (disabled) {
           expect(button.props().disabled).toBe(true);
         } else {
           expect(button.props().disabled).toBe(false);
           button.simulate("click");
-          expect(loadGraph).toBeCalledTimes(1);
-        }
-      });
-    }
-
-    function testPagerankButton(stateFn, {disabled}) {
-      const adjective = disabled ? "disabled" : "working";
-      it(`has a ${adjective} run PageRank button`, () => {
-        const {el, runPagerank, setState} = example();
-        setState(stateFn());
-        el.update();
-        const button = el.findWhere(
-          (b) => b.text() === "Run PageRank" && b.is("button")
-        );
-        if (disabled) {
-          expect(button.props().disabled).toBe(true);
-        } else {
-          expect(button.props().disabled).toBe(false);
-          button.simulate("click");
-          expect(runPagerank).toBeCalledTimes(1);
+          expect(loadGraphAndRunPagerank).toBeCalledTimes(1);
         }
       });
     }
@@ -225,21 +207,19 @@ describe("app/credExplorer/App", () => {
     function stateTestSuite(
       suiteName,
       stateFn,
-      {loadGraphDisabled, runPagerankDisabled, hasPagerankTable}
+      {analyzeCredDisabled, hasPagerankTable}
     ) {
       describe(suiteName, () => {
         testWeightConfig(stateFn);
         testRepositorySelect(stateFn);
-        testGraphButton(stateFn, {disabled: loadGraphDisabled});
-        testPagerankButton(stateFn, {disabled: runPagerankDisabled});
+        testAnalyzeCredButton(stateFn, {disabled: analyzeCredDisabled});
         testPagerankTable(stateFn, hasPagerankTable);
         testLoadingIndicator(stateFn);
       });
     }
 
     stateTestSuite("UNINITIALIZED", exampleStates.uninitialized, {
-      loadGraphDisabled: true,
-      runPagerankDisabled: true,
+      analyzeCredDisabled: true,
       hasPagerankTable: false,
     });
     describe("READY_TO_LOAD_GRAPH", () => {
@@ -248,8 +228,7 @@ describe("app/credExplorer/App", () => {
           loadingState,
           exampleStates.readyToLoadGraph(loadingState),
           {
-            loadGraphDisabled: false,
-            runPagerankDisabled: true,
+            analyzeCredDisabled: loadingState === "LOADING",
             hasPagerankTable: false,
           }
         );
@@ -262,8 +241,7 @@ describe("app/credExplorer/App", () => {
           loadingState,
           exampleStates.readyToRunPagerank(loadingState),
           {
-            loadGraphDisabled: true,
-            runPagerankDisabled: loadingState === "LOADING",
+            analyzeCredDisabled: loadingState === "LOADING",
             hasPagerankTable: false,
           }
         );
@@ -276,8 +254,7 @@ describe("app/credExplorer/App", () => {
           loadingState,
           exampleStates.pagerankEvaluated(loadingState),
           {
-            loadGraphDisabled: true,
-            runPagerankDisabled: loadingState === "LOADING",
+            analyzeCredDisabled: loadingState === "LOADING",
             hasPagerankTable: true,
           }
         );