extract multiple metrics from golang benchmarks

.github/workflows/ci.yml

@@ -50,6 +50,8 @@ jobs:
         with:
           node-version: 16
       - uses: actions/setup-go@v1
+        with:
+           go-version: "1.17.6"
       - uses: actions/cache@v1
         with:
           path: ~/.npm
@@ -63,7 +65,7 @@ jobs:
           cp ./dev/bench/data.js before_data.js
           git checkout -
       - name: Run benchmark
-        run: cd examples/go && go test -bench 'BenchmarkFib' | tee output.txt
+        run: cd examples/go && go test ./fib_test.go ./fib.go -bench 'BenchmarkFib' | tee output.txt
       - name: Store benchmark result
         uses: ./
         with:

.github/workflows/go.yml

@@ -15,6 +15,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
+        with:
+          go-version: "1.17.6"
       - name: Run benchmark
         run: cd examples/go && go test -bench 'BenchmarkFib' | tee output.txt
 

examples/go/fib_test.go

@@ -8,10 +8,12 @@ func BenchmarkFib10(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		var _ = Fib(10)
 	}
+	b.ReportMetric(3.0, "auxMetricUnits")
 }
 
 func BenchmarkFib20(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		var _ = Fib(20)
 	}
+	b.ReportMetric(4.0, "auxMetricUnits")
 }

src/extract.ts

@@ -345,7 +345,13 @@ function extractGoResult(output: string): BenchmarkResult[] {
     // Example:
     //   BenchmarkFib20-8           30000             41653 ns/op
     //   BenchmarkDoWithConfigurer1-8            30000000                42.3 ns/op
-    const reExtract = /^(Benchmark\w+(?:\/?[\w()$%^&*-]*?)*?)(-\d+)?\s+(\d+)\s+([0-9.]+)\s+(.+)$/;
+    // Example if someone has used the ReportMetric function to add additional metrics to each benchmark:
+    // BenchmarkThing-16    	       1	95258906556 ns/op	        64.02 UnitsForMeasure2	        31.13 UnitsForMeasure3
+
+    // reference, "Proposal: Go Benchmark Data Format": https://go.googlesource.com/proposal/+/master/design/14313-benchmark-format.md
+    // "A benchmark result line has the general form: <name> <iterations> <value> <unit> [<value> <unit>...]"
+    // "The fields are separated by runs of space characters (as defined by unicode.IsSpace), so the line can be parsed with strings.Fields. The line must have an even number of fields, and at least four."
+    const reExtract = /^(Benchmark\w+(?:\/?[\w()$%^&*-]*?)*?)(-\d+)?\s+(\d+)\s+(.+)$/;
 
     for (const line of lines) {
         const m = line.match(reExtract);
@@ -356,15 +362,18 @@ function extractGoResult(output: string): BenchmarkResult[] {
         const name = m[1];
         const procs = m[2] !== undefined ? m[2].slice(1) : null;
         const times = m[3];
-        const value = parseFloat(m[4]);
-        const unit = m[5];
+        const remainder = m[4];
 
-        let extra = `${times} times`;
-        if (procs !== null) {
-            extra += `\n${procs} procs`;
+        const pieces = remainder.split(/[ \t]+/);
+        for (let i = 0; i < pieces.length; i = i + 2) {
+            let extra = `${times} times`.replace(/\s\s+/g, ' ');
+            if (procs !== null) {
+                extra += `\n${procs} procs`;
+            }
+            const value = parseFloat(pieces[i]);
+            const unit = pieces[i + 1];
+            ret.push({ name, value, unit, extra });
         }
-
-        ret.push({ name, value, unit, extra });
     }
 
     return ret;

test/data/extract/go_output.txt

@@ -5,5 +5,8 @@ BenchmarkFib20  	 	   					30000		40537.123 ns/op
 BenchmarkFib/my_tabled_benchmark_-_10-8    	5000000		325 ns/op
 BenchmarkFib/my_tabled_benchmark_-_20		30000		40537.123 ns/op
 BenchmarkFib/my/tabled/benchmark_-_20		30001		40537.456 ns/op
+BenchmarkFib11-16    	 4587789	       262.7 ns/op	         3.000 auxMetricUnits
+BenchmarkFib22-16    	   37653	     31915 ns/op	         4.000 auxMetricUnits
+PASS
 PASS
 ok  	_/Users/rhayasd/Develop/github.com/benchmark-action/github-action-benchmark/examples/go	3.614s

test/extract.spec.ts

@@ -199,6 +199,30 @@ describe('extractResult()', function () {
                     value: 40537.456,
                     extra: '30001 times',
                 },
+                {
+                    name: 'BenchmarkFib11',
+                    unit: 'ns/op',
+                    value: 262.7,
+                    extra: '4587789 times\n16 procs',
+                },
+                {
+                    name: 'BenchmarkFib11',
+                    unit: 'auxMetricUnits',
+                    value: 3,
+                    extra: '4587789 times\n16 procs',
+                },
+                {
+                    name: 'BenchmarkFib22',
+                    unit: 'ns/op',
+                    value: 31915,
+                    extra: '37653 times\n16 procs',
+                },
+                {
+                    name: 'BenchmarkFib22',
+                    unit: 'auxMetricUnits',
+                    value: 4,
+                    extra: '37653 times\n16 procs',
+                },
             ],
         },
         {