Expected Behavior

Conditions receive Task results as condition parameters.

Actual Behavior

Task results do not get passed properly

Containers:
  step-condition-check-condition-1:
    Container ID:  containerd://4c1637ec361f853159205654e67425ca7ef4b14b3da8f1b3b6316a539e12d21e
    Image:         python:alpine3.6
    Image ID:      docker.io/library/python@sha256:766a961bf699491995cc29e20958ef11fd63741ff41dcc70ec34355b39d52971
    Port:          <none>
    Host Port:     <none>
    Command:
      /tekton/tools/entrypoint
    Args:
      -wait_file
      /tekton/downward/ready
      -wait_file_content
      -post_file
      /tekton/tools/0
      -termination_path
      /tekton/termination
      -entrypoint
      sh
      --
      -c
      EXITCODE=$(python -c "import sys; input1=str.rstrip(sys.argv[1]); input2=str.rstrip(sys.argv[2]); print(0) if (input1 == 'heads') else print(1)" '$(tasks.flip-coin.results.output)' 'heads'); exit $EXITCODE

Steps to Reproduce the Problem

Can be reproduced from this yaml

apiVersion: tekton.dev/v1alpha1
kind: Condition
metadata:
  name: condition-1
spec:
  check:
    args:
    - EXITCODE=$(python -c "import sys; input1=str.rstrip(sys.argv[1]); input2=str.rstrip(sys.argv[2]); print(0) if (input1 == 'heads') else
      print(1)" '$(params.flip-coin)' 'heads'); exit $EXITCODE
    command:
    - sh
    - -c
    image: python:alpine3.6
  params:
  - name: flip-coin
---
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: flip-coin
spec:
  results:
  - description: /tmp/output
    name: output
  steps:
  - args:
    - python -c "import random; result = 'heads' if random.randint(0,1) == 0 else
      'tails'; result='heads'; print(result)" | tee $(results.output.path)
    command:
    - sh
    - -c
    image: python:alpine3.6
    name: flip-coin
---
apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:
  name: condition-check
spec:
  params:
  - name: flip-coin
  results:
  - description: /tmp/output
    name: output
  steps:
  - args:
    - EXITCODE=$(python -c "import sys; input1=str.rstrip(sys.argv[1]); input2=str.rstrip(sys.argv[2]); print(input1) if (input1 == 'heads') else
      print(input1)" '$(params.flip-coin)' 'heads'); echo $EXITCODE | tee $(results.output.path)
    command:
    - sh
    - -c
    image: python:alpine3.6
---
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: generate-random-number
spec:
  results:
  - description: /tmp/output
    name: output
  steps:
  - args:
    - python -c "import random; print(random.randint($0, $1))" | tee $2
    - '0'
    - '9'
    - $(results.output.path)
    command:
    - sh
    - -c
    image: python:alpine3.6
    name: generate-random-number
---
apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  annotations:
    pipelines.kubeflow.org/pipeline_spec: '{"description": "Shows how to use dsl.Condition().",
      "name": "Conditional execution pipeline"}'
  name: flip-cond-gen
spec:
  params: []
  tasks:
  - name: flip-coin
    params: []
    taskRef:
      name: flip-coin
  - name: condition-check
    params:
      - name: flip-coin
        value: $(tasks.flip-coin.results.output)
    taskRef:
      name: condition-check
  - conditions:
    - conditionRef: condition-1
      params:
      - name: flip-coin
        value: $(tasks.flip-coin.results.output)
    name: generate-random-number
    params: []
    taskRef:
      name: generate-random-number

Additional Info

• Kubernetes version:

  Output of kubectl version:

Client Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.8", GitCommit:"211047e9a1922595eaa3a1127ed365e9299a6c23", GitTreeState:"clean", BuildDate:"2019-10-15T12:11:03Z", GoVersion:"go1.12.10", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.8+IKS", GitCommit:"c6910e70b932ed9ffe5baedade2274a72925660f", GitTreeState:"clean", BuildDate:"2020-03-13T14:13:41Z", GoVersion:"go1.13.8", Compiler:"gc", Platform:"linux/amd64"}

• Tekton Pipeline version:

  Client version: 0.8.0 Pipeline version: v0.11.0-rc2