Fix invalid API call when running locally

The method getAnalysisKey would call getWorkflowPath and raise an API Error.

This change follows the pattern in prepareLocalRunEnvironment to set a dummy value for the required environment variable, therefore shortcutting the API request.

CONTRIBUTING.md

@@ -36,6 +36,7 @@ It is possible to run this action locally via [act](https://github.com/nektos/ac
 
   ```bash
   CODEQL_LOCAL_RUN=true
+  GITHUB_SERVER_URL=https://github.com
 
   # Optional, for better logging
   GITHUB_JOB=<ANY_JOB_NAME>

src/actions-util.test.ts

@@ -33,30 +33,59 @@ test("getRef() returns head PR ref if GITHUB_SHA not currently checked out", asy
   t.deepEqual(actualRef, "refs/pull/1/head");
 });
 
+test("getAnalysisKey() when a local run", async (t) => {
+  const origLocalRun = process.env.CODEQL_LOCAL_RUN;
+
+  process.env.CODEQL_LOCAL_RUN = "true";
+  process.env.CODEQL_ACTION_ANALYSIS_KEY = "";
+  process.env.GITHUB_JOB = "";
+
+  actionsutil.prepareLocalRunEnvironment();
+
+  const actualAnalysisKey = await actionsutil.getAnalysisKey();
+
+  t.deepEqual(actualAnalysisKey, "LOCAL-RUN:UNKNOWN-JOB");
+
+  process.env.CODEQL_LOCAL_RUN = origLocalRun;
+});
+
 test("prepareEnvironment() when a local run", (t) => {
   const origLocalRun = process.env.CODEQL_LOCAL_RUN;
 
   process.env.CODEQL_LOCAL_RUN = "false";
   process.env.GITHUB_JOB = "YYY";
+  process.env.CODEQL_ACTION_ANALYSIS_KEY = "TEST";
 
   actionsutil.prepareLocalRunEnvironment();
 
   // unchanged
   t.deepEqual(process.env.GITHUB_JOB, "YYY");
+  t.deepEqual(process.env.CODEQL_ACTION_ANALYSIS_KEY, "TEST");
 
   process.env.CODEQL_LOCAL_RUN = "true";
 
   actionsutil.prepareLocalRunEnvironment();
 
   // unchanged
   t.deepEqual(process.env.GITHUB_JOB, "YYY");
+  t.deepEqual(process.env.CODEQL_ACTION_ANALYSIS_KEY, "TEST");
+
+  process.env.CODEQL_ACTION_ANALYSIS_KEY = "";
+
+  actionsutil.prepareLocalRunEnvironment();
+
+  // updated
+  t.deepEqual(process.env.GITHUB_JOB, "YYY");
+  t.deepEqual(process.env.CODEQL_ACTION_ANALYSIS_KEY, "LOCAL-RUN:YYY");
 
   process.env.GITHUB_JOB = "";
+  process.env.CODEQL_ACTION_ANALYSIS_KEY = "";
 
   actionsutil.prepareLocalRunEnvironment();
 
   // updated
   t.deepEqual(process.env.GITHUB_JOB, "UNKNOWN-JOB");
+  t.deepEqual(process.env.CODEQL_ACTION_ANALYSIS_KEY, "LOCAL-RUN:UNKNOWN-JOB");
 
   process.env.CODEQL_LOCAL_RUN = origLocalRun;
 });

src/actions-util.ts

@@ -52,6 +52,12 @@ export function prepareLocalRunEnvironment() {
   if (!process.env.GITHUB_JOB) {
     core.exportVariable("GITHUB_JOB", "UNKNOWN-JOB");
   }
+  if (!process.env.CODEQL_ACTION_ANALYSIS_KEY) {
+    core.exportVariable(
+      "CODEQL_ACTION_ANALYSIS_KEY",
+      `LOCAL-RUN:${process.env.GITHUB_JOB}`
+    );
+  }
 }
 
 /**