support errorprone javacflags

Soong has a separate property specifically for errorprone javacflags
that we need to add to the Bazel javacopts.

Test: go test ./bp2build
Change-Id: I5299f45793d2b05a6a71b94dd17ceb797f407846
diff --git a/bp2build/java_library_conversion_test.go b/bp2build/java_library_conversion_test.go
index 2f6bce2..4b75e3b 100644
--- a/bp2build/java_library_conversion_test.go
+++ b/bp2build/java_library_conversion_test.go
@@ -30,6 +30,7 @@
 }
 
 func runJavaLibraryTestCase(t *testing.T, tc bp2buildTestCase) {
+	t.Helper()
 	runJavaLibraryTestCaseWithRegistrationCtxFunc(t, tc, func(ctx android.RegistrationContext) {})
 }
 
@@ -156,3 +157,65 @@
 		ctx.RegisterModuleType("java_plugin", java.PluginFactory)
 	})
 }
+
+func TestJavaLibraryErrorproneJavacflagsEnabledManually(t *testing.T) {
+	runJavaLibraryTestCase(t, bp2buildTestCase{
+		blueprint: `java_library {
+    name: "java-lib-1",
+    srcs: ["a.java"],
+    javacflags: ["-Xsuper-fast"],
+    errorprone: {
+        enabled: true,
+        javacflags: ["-Xep:SpeedLimit:OFF"],
+    },
+}`,
+		expectedBazelTargets: []string{
+			makeBazelTarget("java_library", "java-lib-1", attrNameToString{
+				"javacopts": `[
+        "-Xsuper-fast",
+        "-Xep:SpeedLimit:OFF",
+    ]`,
+				"srcs": `["a.java"]`,
+			}),
+		},
+	})
+}
+
+func TestJavaLibraryErrorproneJavacflagsErrorproneDisabledByDefault(t *testing.T) {
+	runJavaLibraryTestCase(t, bp2buildTestCase{
+		blueprint: `java_library {
+    name: "java-lib-1",
+    srcs: ["a.java"],
+    javacflags: ["-Xsuper-fast"],
+    errorprone: {
+        javacflags: ["-Xep:SpeedLimit:OFF"],
+    },
+}`,
+		expectedBazelTargets: []string{
+			makeBazelTarget("java_library", "java-lib-1", attrNameToString{
+				"javacopts": `["-Xsuper-fast"]`,
+				"srcs":      `["a.java"]`,
+			}),
+		},
+	})
+}
+
+func TestJavaLibraryErrorproneJavacflagsErrorproneDisabledManually(t *testing.T) {
+	runJavaLibraryTestCase(t, bp2buildTestCase{
+		blueprint: `java_library {
+    name: "java-lib-1",
+    srcs: ["a.java"],
+    javacflags: ["-Xsuper-fast"],
+    errorprone: {
+		enabled: false,
+        javacflags: ["-Xep:SpeedLimit:OFF"],
+    },
+}`,
+		expectedBazelTargets: []string{
+			makeBazelTarget("java_library", "java-lib-1", attrNameToString{
+				"javacopts": `["-Xsuper-fast"]`,
+				"srcs":      `["a.java"]`,
+			}),
+		},
+	})
+}
diff --git a/java/java.go b/java/java.go
index 1b6e559..5afa2db 100644
--- a/java/java.go
+++ b/java/java.go
@@ -2060,15 +2060,22 @@
 		protoSrcPartition: android.ProtoSrcLabelPartition,
 	})
 
+	var javacopts []string
+	if m.properties.Javacflags != nil {
+		javacopts = append(javacopts, m.properties.Javacflags...)
+	}
+	epEnabled := m.properties.Errorprone.Enabled
+	//TODO(b/227504307) add configuration that depends on RUN_ERROR_PRONE environment variable
+	if Bool(epEnabled) {
+		javacopts = append(javacopts, m.properties.Errorprone.Javacflags...)
+	}
+
 	commonAttrs := &javaCommonAttributes{
 		Srcs: srcPartitions[javaSrcPartition],
 		Plugins: bazel.MakeLabelListAttribute(
 			android.BazelLabelForModuleDeps(ctx, m.properties.Plugins),
 		),
-	}
-
-	if m.properties.Javacflags != nil {
-		commonAttrs.Javacopts = bazel.MakeStringListAttribute(m.properties.Javacflags)
+		Javacopts: bazel.MakeStringListAttribute(javacopts),
 	}
 
 	depLabels := &javaDependencyLabels{}